Thrusterpedia

Which boat thruster, what it costs, how to get it installed

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Drawing of a tunnel thruster: a tube through the bow below the waterline, the hull cut away to show the motor on top.
Our drawing of a tunnel thruster, the same for every maker. It is not Quick’s own design.

Quick · tunnel thruster · bow

Quick BTQ 250: specs, price and the boats it fits

It gives 265 to 529 lb of push, across three sizes. Quick sells it for boats of 42 to 69 ft. It runs on 12 V or 24 V.

The unit$8,624 to $10,571Equipment only, Quick USA, read 26 October 2026
Installed by a yard, 55 ft boat$17,789 to $30,238Our estimate: the unit, labor, haul-out, battery and parts
  • Haul-out to install
  • DIY 1 of 5: yard job
  • 3-year warranty

Choose a size

The Quick BTQ 250 comes in three sizes. Each has its own price, wiring and boats it suits. Pick one and the page below shows that size.

Every size side by side three sizes
Every size of the Quick BTQ 250
SizePushVoltageQuick’s boat lengthPrice
BTQ 250-120 265 lb (120 kgf) 12 or 24 V 42 to 55 ft $8,624
BTQ 250-140 309 lb (140 kgf) 24 V 45 to 59 ft $9,818
BTQ 250-240 529 lb (240 kgf) 24 V 52 to 69 ft $10,571

From the database. The figures are Quick’s and the dealers’.

Quick stats

  • Thrust 265 lb 120 kgf, Quick's rating
  • Boat length 42 to 55 ft Quick's own range
  • Price per lb of thrust $32.54 Unit only. $67 to $106 installed
  • Voltage 12 V or 24 V As sold
  • Battery at 12 V 550 CCA and 125 Ah Two batteries, near the thruster
  • Run limit Not published Quick prints none for the motor. Its control panel cuts the command after about five minutes
  • To install it Haul-out The boat comes out of the water
  • Anodes $121.39 A change. More than twice another maker's

Quick stats

  • Thrust 309 lb 140 kgf, Quick's rating
  • Boat length 45 to 59 ft Quick's own range
  • Price per lb of thrust $31.77 Unit only. $61 to $94 installed
  • Voltage 24 V As sold
  • Battery at 24 V 550 CCA and 120 Ah Two batteries, near the thruster
  • Run limit Not published Quick prints none for the motor. Its control panel cuts the command after about five minutes
  • To install it Haul-out The boat comes out of the water
  • Anodes $121.39 A change. More than twice another maker's

Quick stats

  • Thrust 529 lb 240 kgf, Quick's rating
  • Boat length 52 to 69 ft Quick's own range
  • Price per lb of thrust $19.98 Unit only. $37 to $58 installed
  • Voltage 24 V As sold
  • Battery at 24 V 1,000 CCA and 200 Ah Two batteries, near the thruster
  • Run limit Not published Quick prints none for the motor. Its control panel cuts the command after about five minutes
  • To install it Haul-out The boat comes out of the water
  • Anodes $121.39 A change. More than twice another maker's

About the Quick BTQ 250

The BTQ 250 is Quick’s big-boat bow thruster, for boats of about 42 to 69 ft. Two propellers spin in a large tube through the hull near the bow, giving about 265 to 529 lb of push depending on the size you choose. Quick has built thrusters since 2007.

Quick’s US store sells it from $8,624, for the thruster alone. Expect to spend another $540 on Quick’s joystick, plus the tube (from $941) and a heavy-duty fuse holder ($209). The two bigger models run on 24 V only, and the batteries, cable and charger for them come to about $2,322 to $2,771 more.

Read more

One question to put to Quick before you order: by its own figures, the largest model makes far more push for its power than the middle one. The parts that wear are the motor brushes and the drive coupling, which Quick sells for this size at $395. Quick says the thruster isn’t for continuous use, and the panel holds it to about 5 minutes 40 seconds of running, then 20 minutes off. The warranty is three years.

Installers will find the wiring figures and dimensions further down. For the rest of Quick’s line, read the Quick thruster review.

Where this summary comes from (10 sources, read 11 October 2026)

Will the Quick BTQ 250 steer your boat?

60 FT TRAWLER · BOW · 15 KT WIND

Size forThis page always opens on Steering.

Every knot figure here is wind speed, not boat speed or current.

Steers her at 16 kt

On a 60 ft trawler the Quick BTQ 250 (265 lb) steers her in a 16 knot breeze. Her bow needs about 240 lb from a tunnel to steer her in a 15 knot breeze.

The finder lists it for her.

21 FT LEVER Quick BTQ 250 pivot

A tunnel at the bow of a 60 ft trawler 240 lb ★ this unit · 1 to 3: the three cheapest others that steer her at 13 kt or more, installed

  1. ★ Quick BTQ 250 this unit 265 lb · tunnel from $17,869 Steers her at 16 kt
  2. 1 VETUS Bow 95 at 24 V 231 lb · tunnel from $11,063 Steers her at 15 kt
  3. 2 Lewmar 185TT 6.0kW 214 lb · tunnel from $11,106 Steers her at 14 kt
  4. 3 Max Power CT125 (24 V) 254 lb · tunnel from $11,781 Steers her at 15 kt

The Quick BTQ 250 on a trawler, by length

  1. 25 ft37 kt
  2. 30 ft32 kt
  3. 35 ft27 kt
  4. 40 ft24 kt
  5. 45 ft21 kt
  6. 50 ft19 kt
  7. 55 ft17 kt
  8. 60 ft16 kt
  9. 65 ft15 kt
  10. 70 ft13 kt
  11. 75 ft12.6 kt
  12. 80 ft12 kt

Outlined: the finder does not list it at that length (under 13 kt, far more than she needs, or outside Quick’s own length range).

  • Under 10 kt
  • 10 to 15 kt
  • 15 to 20 kt: the sweet spot
  • Over 20 kt: more than she needs

Prices are the low end of the installed total, from our estimate. For your own boat, drive and installer, the finder prices each unit.

Is it right for your boat?

What Quick says 42 to 55 ft The maker's own range, from its listing
What our sizing says 48 to 60 ft Full thrust in 15 knots, across the kinds of boat it fits
Every kind of boat it fits, by length ten boat types
Which boats it fits, by length
Boat Full thrust at 15 knotsStill a fit, in lighter wind
Pontoon & tritoon Not listed. A pontoon has no hull body between the logs to bore a tunnel through, and nobody sells one for these boats.
Sailboat 46 to 60 ft None
Houseboat 38 to 48 ft 49 to 55 ftfull thrust to about 13 knots at 55 ft
Catamaran 52 to 60 ft None
Trawler 45 to 60 ft None
Motor yacht 45 to 60 ft None
Bass & flats Not listed. Nobody sells a tunnel kit for these hulls, and a bass boat’s shallow planing bow has almost no depth to hold one.
Wake & ski boats Not listed. Nobody sells a tunnel kit for these hulls.
Express cruiser 58 to 60 ft None
Center console No length. More thrust than the boat needs.

The Quick BTQ 250 against each kind of boat, in a 15 knot wind. Our sizing, from the finder’s own rules.

The first column is where one unit gives all the thrust the boat needs in 15 knots. The second is where the finder still lists it: the unit steers her in a 13 or 14 knot wind, within 15 percent of the 15 knot breeze this site sizes for. On a boat shorter than the first column’s shortest length, the unit is more than the boat needs.

How we size it

Our figure is the longest boat one unit can steer in a 15 knot wind. It is a range because each kind of boat catches the wind differently. Here a houseboat gets full thrust to 48 ft, and a sailboat to 60 ft. The maker gives one range for every boat.

The table tries the Quick BTQ 250 on each kind of boat, at every length that kind of boat is built in. The wind is 15 knots and the rules are the finder’s own. A length counts as a fit when the unit gives the thrust that boat needs at the bow and the maker lists it for that length.

A boat up to 10 percent past the maker’s range still counts here, as it does in the finder. So the table runs down to 38 ft and up to 60 ft, just past Quick’s own range (42 to 55 ft).

It is sized for six kinds of boat here. For your own boat, the finder gives an answer that also counts your drive and who does the installing. The compare page sets this unit beside others.

What it costs installed

A yard job, everything in. Our estimate.

Installed by a yard
Boat Total installed
38 ft $17,389 to $22,431$66 to $85 a lb of thrust
50 ft $17,699 to $28,051$67 to $106 a lb of thrust
60 ft $17,869 to $28,541$67 to $108 a lb of thrust

From the shortest to the longest boat it is sized for.

What is in each total five lines

These totals are our estimate of a yard job: the unit’s price, plus a yard’s hours at $160 to $180 an hour, plus the batteries, cable and charger, plus the other parts the box does not hold. A Lifting the boat out of the water on a travel lift or a trailer so work can be done below the waterline. It is billed separately from the job itself. adds $680 to $2,900 at these lengths, with 5 to 7 days out of the water, worked from eight yards’ own rate cards. The hours come from what owners and yards report. The cost page builds the same figures line by line.

Each line of the estimate
Boat length The unit Yard labor Haul-out Batteries, cable, charger Other parts
38 ft $8,624 $5,120 to $7,56032 to 42 hours $680 to $1,830 $2,322 to $2,771 $643 to $1,646
50 ft $8,624 $5,120 to $12,60032 to 70 hours $990 to $2,410 $2,322 to $2,771 $643 to $1,646
60 ft $8,624 $5,120 to $12,60032 to 70 hours $1,160 to $2,900 $2,322 to $2,771 $643 to $1,646

For every length in the table above.

How the batteries, cable and charger add up. We price a battery bank close to the thruster, as the makers recommend, with 10 to 20 ft of cable out and back: red for the positive, black for the negative, cut to length. The low end is the cheapest battery that meets the figure and the shorter run; the high end is a sealed (AGM) battery and the longer run. The charger is a NOCO GEN5X2 two-bank shore charger.

Batteries and lugs are priced at Fisheries Supply and the cable and charger at Defender, read 26 October 2026.

  • At 12 V: two 12 V batteries side by side (in parallel), at least 550 CCA and 125 Ah each (Quick’s minimum), $1,996 for both; Quick’s cable table gives 2 x 3/0 to 2 x 4/0 AWG, priced on 2 x 4/0 AWG, the nearest size cut to length: $360 to $629 for the red and black cable and the lugs; a GEN5X2 charger, $146.
  • At 24 V: two 12 V batteries in series, at least 550 CCA and 120 Ah each (Quick’s minimum), $1,996 for both; Quick’s cable table gives 3/0 to 2 x 1/0 AWG, priced on 4/0 AWG, the nearest size cut to length: $180 to $314 for the red and black cable and the lugs; a GEN5X2 charger, $146.

The sizing and the costs on this page are estimates, for guidance only and without warranty. They are no quote, and nobody has inspected your boat. Check them against the maker’s manual and your yard before you rely on them. Terms of use.

DIY breakdown

DIY 1 of 5: Yard job. A qualified professional does all of it.

DIY levels

  • Level 5: Owner install. No yard, no electrician.
  • Level 4: You install it, electrician connects. You mount and wire it; a marine electrician makes the final connections.
  • Level 3: Split with the yard. The yard does the below-waterline part; you do the wiring.
  • Level 2: Wiring prep only. The yard installs the unit and does the hull work; you do the wiring prep.
  • Level 1: Yard job. A qualified professional does all of it.

You Yard Electrician. The bar is labor hours; a haul-out is a note.

How we rate DIY

You: none Yard: 32 to 70 hours Electrician: in the yard’s hours Plus a haul-out.

Every step, and who does it one steps
  1. The whole job: hull, unit and wiring Yard 32 to 70 hours The low end is two crew over two days, the job as owners describe it on the forums. The high end rises with boat length between two real billed figures: 32 hours at 35 ft, and the largest invoice we hold, 70 hours at 47 ft.

Quick’s manual: “Installation and subsequent inspection or repair work must only be carried out by qualified personnel.” The manual.

Hours are labor only.

Will the Quick BTQ 250 steer your boat?

64 FT TRAWLER · BOW · 15 KT WIND

Size forThis page always opens on Steering.

Every knot figure here is wind speed, not boat speed or current.

Steers her at 16 kt

On a 64 ft trawler the Quick BTQ 250 (309 lb) steers her in a 16 knot breeze. Her bow needs about 273 lb from a tunnel to steer her in a 15 knot breeze.

The finder leaves it off her list. It shows the BTQ 250-240 for her instead.

22.4 FT LEVER Quick BTQ 250 pivot

A tunnel at the bow of a 64 ft trawler 273 lb ★ this unit · 1 to 3: the three cheapest others that steer her at 13 kt or more, installed

  1. ★ Quick BTQ 250 this unit 309 lb · tunnel from $19,133 Steers her at 16 kt
  2. 1 Lewmar 185TT 6.0kW 214 lb · tunnel from $11,176 Steers her at 13 kt
  3. 2 Max Power CT125 (24 V) 254 lb · tunnel from $11,851 Steers her at 14 kt
  4. 3 VETUS Bow 125 at 12 V 275 lb · tunnel from $12,161 Steers her at 15 kt

The Quick BTQ 250 on a trawler, by length

  1. 25 ft40 kt
  2. 30 ft34 kt
  3. 35 ft29 kt
  4. 40 ft26 kt
  5. 45 ft23 kt
  6. 50 ft20 kt
  7. 55 ft19 kt
  8. 60 ft17 kt
  9. 65 ft16 kt
  10. 70 ft15 kt
  11. 75 ft14 kt
  12. 80 ft13 kt

Outlined: the finder does not list it at that length (under 13 kt, far more than she needs, or outside Quick’s own length range).

  • Under 10 kt
  • 10 to 15 kt
  • 15 to 20 kt: the sweet spot
  • Over 20 kt: more than she needs

Prices are the low end of the installed total, from our estimate. For your own boat, drive and installer, the finder prices each unit.

Is it right for your boat?

What Quick says 45 to 59 ft The maker's own range, from its listing
What our sizing says 52 to 64 ft Full thrust in 15 knots, across the kinds of boat it fits
Every kind of boat it fits, by length ten boat types
Which boats it fits, by length
Boat Full thrust at 15 knotsStill a fit, in lighter wind
Pontoon & tritoon Not listed. A pontoon has no hull body between the logs to bore a tunnel through, and nobody sells one for these boats.
Sailboat 49 to 64 ft None
Houseboat 41 to 52 ft 53 to 60 ftfull thrust to about 13 knots at 60 ft
Catamaran 56 to 64 ft None
Trawler 49 to 64 ft None
Motor yacht 49 to 64 ft None
Bass & flats Not listed. Nobody sells a tunnel kit for these hulls, and a bass boat’s shallow planing bow has almost no depth to hold one.
Wake & ski boats Not listed. Nobody sells a tunnel kit for these hulls.
Express cruiser 62 to 64 ft None
Center console No length. More thrust than the boat needs.

The Quick BTQ 250 against each kind of boat, in a 15 knot wind. Our sizing, from the finder’s own rules.

The first column is where one unit gives all the thrust the boat needs in 15 knots. The second is where the finder still lists it: the unit steers her in a 13 or 14 knot wind, within 15 percent of the 15 knot breeze this site sizes for. On a boat shorter than the first column’s shortest length, the unit is more than the boat needs.

How we size it

Our figure is the longest boat one unit can steer in a 15 knot wind. It is a range because each kind of boat catches the wind differently. Here a houseboat gets full thrust to 52 ft, and a sailboat to 64 ft. The maker gives one range for every boat.

The table tries the Quick BTQ 250 on each kind of boat, at every length that kind of boat is built in. The wind is 15 knots and the rules are the finder’s own. A length counts as a fit when the unit gives the thrust that boat needs at the bow and the maker lists it for that length.

A boat up to 10 percent past the maker’s range still counts here, as it does in the finder. So the table runs down to 41 ft and up to 64 ft, just past Quick’s own range (45 to 59 ft).

It is sized for six kinds of boat here. For your own boat, the finder gives an answer that also counts your drive and who does the installing. The compare page sets this unit beside others.

What it costs installed

A yard job, everything in. Our estimate.

Installed by a yard
Boat Total installed
41 ft $18,633 to $25,080$60 to $81 a lb of thrust
55 ft $18,983 to $29,170$61 to $94 a lb of thrust
64 ft $19,133 to $29,610$62 to $96 a lb of thrust

From the shortest to the longest boat it is sized for.

What is in each total five lines

These totals are our estimate of a yard job: the unit’s price, plus a yard’s hours at $160 to $180 an hour, plus the batteries, cable and charger, plus the other parts the box does not hold. A Lifting the boat out of the water on a travel lift or a trailer so work can be done below the waterline. It is billed separately from the job itself. adds $730 to $3,090 at these lengths, with 5 to 7 days out of the water, worked from eight yards’ own rate cards. The hours come from what owners and yards report. The cost page builds the same figures line by line.

Each line of the estimate
Boat length The unit Yard labor Haul-out Batteries, cable, charger Other parts
41 ft $9,818 $5,120 to $9,18032 to 51 hours $730 to $1,980 $2,322 to $2,456 $643 to $1,646
55 ft $9,818 $5,120 to $12,60032 to 70 hours $1,080 to $2,650 $2,322 to $2,456 $643 to $1,646
64 ft $9,818 $5,120 to $12,60032 to 70 hours $1,230 to $3,090 $2,322 to $2,456 $643 to $1,646

For every length in the table above.

How the batteries, cable and charger add up. We price a battery bank close to the thruster, as the makers recommend, with 10 to 20 ft of cable out and back: red for the positive, black for the negative, cut to length. The low end is the cheapest battery that meets the figure and the shorter run; the high end is a sealed (AGM) battery and the longer run. The charger is a NOCO GEN5X2 two-bank shore charger.

Batteries and lugs are priced at Fisheries Supply and the cable and charger at Defender, read 26 October 2026.

  • At 24 V: two 12 V batteries in series, at least 550 CCA and 120 Ah each (Quick’s minimum), $1,996 for both; Quick’s cable table gives 3/0 to 2 x 1/0 AWG, priced on 4/0 AWG, the nearest size cut to length: $180 to $314 for the red and black cable and the lugs; a GEN5X2 charger, $146.

The sizing and the costs on this page are estimates, for guidance only and without warranty. They are no quote, and nobody has inspected your boat. Check them against the maker’s manual and your yard before you rely on them. Terms of use.

DIY breakdown

DIY 1 of 5: Yard job. A qualified professional does all of it.

DIY levels

  • Level 5: Owner install. No yard, no electrician.
  • Level 4: You install it, electrician connects. You mount and wire it; a marine electrician makes the final connections.
  • Level 3: Split with the yard. The yard does the below-waterline part; you do the wiring.
  • Level 2: Wiring prep only. The yard installs the unit and does the hull work; you do the wiring prep.
  • Level 1: Yard job. A qualified professional does all of it.

You Yard Electrician. The bar is labor hours; a haul-out is a note.

How we rate DIY

You: none Yard: 32 to 70 hours Electrician: in the yard’s hours Plus a haul-out.

Every step, and who does it one steps
  1. The whole job: hull, unit and wiring Yard 32 to 70 hours The low end is two crew over two days, the job as owners describe it on the forums. The high end rises with boat length between two real billed figures: 32 hours at 35 ft, and the largest invoice we hold, 70 hours at 47 ft.

Quick’s manual: “Installation and subsequent inspection or repair work must only be carried out by qualified personnel.” The manual.

Hours are labor only.

Will the Quick BTQ 250 steer your boat?

75 FT TRAWLER · BOW · 15 KT WIND

Size forThis page always opens on Steering.

Every knot figure here is wind speed, not boat speed or current.

Steers her at 18 kt

On a 75 ft trawler the Quick BTQ 250 (529 lb) steers her in an 18 knot breeze. Her bow needs about 375 lb from a tunnel to steer her in a 15 knot breeze.

The finder lists it for her.

26.3 FT LEVER Quick BTQ 250 pivot

A tunnel at the bow of a 75 ft trawler 375 lb ★ this unit · 1 to 3: the three cheapest others that steer her at 13 kt or more, installed

  1. ★ Quick BTQ 250 this unit 529 lb · tunnel from $20,066 Steers her at 18 kt
  2. 1 Lewmar 250TT GEN 2 Tunnel Thruster 308 lb · tunnel from $13,133 Steers her at 14 kt
  3. 2 Max Power CT225 (composite leg) 551 lb · tunnel from $13,177 Steers her at 18 kt
  4. 3 Sleipner SE170/250TC 463 lb · tunnel from $14,583 Steers her at 17 kt

The Quick BTQ 250 on a trawler, by length

  1. 25 ft53 kt
  2. 30 ft45 kt
  3. 35 ft38 kt
  4. 40 ft34 kt
  5. 45 ft30 kt
  6. 50 ft27 kt
  7. 55 ft24 kt
  8. 60 ft22 kt
  9. 65 ft21 kt
  10. 70 ft19 kt
  11. 75 ft18 kt
  12. 80 ft17 kt

Outlined: the finder does not list it at that length (under 13 kt, far more than she needs, or outside Quick’s own length range).

  • Under 10 kt
  • 10 to 15 kt
  • 15 to 20 kt: the sweet spot
  • Over 20 kt: more than she needs

Prices are the low end of the installed total, from our estimate. For your own boat, drive and installer, the finder prices each unit.

Is it right for your boat?

What Quick says 52 to 69 ft The maker's own range, from its listing
What our sizing says 69 to 75 ft Full thrust in 15 knots, across the kinds of boat it fits
Every kind of boat it fits, by length ten boat types
Which boats it fits, by length
Boat Full thrust at 15 knotsStill a fit, in lighter wind
Pontoon & tritoon Not listed. A pontoon has no hull body between the logs to bore a tunnel through, and nobody sells one for these boats.
Sailboat 64 to 75 ft None
Houseboat 48 to 69 ft 70 to 75 ftfull thrust to about 13 knots at 75 ft
Catamaran 73 to 75 ft None
Trawler 63 to 75 ft None
Motor yacht 63 to 75 ft None
Bass & flats Not listed. Nobody sells a tunnel kit for these hulls, and a bass boat’s shallow planing bow has almost no depth to hold one.
Wake & ski boats Not listed. Nobody sells a tunnel kit for these hulls.
Express cruiser No length. More thrust than the boat needs.
Center console No length. More thrust than the boat needs.

The Quick BTQ 250 against each kind of boat, in a 15 knot wind. Our sizing, from the finder’s own rules.

The first column is where one unit gives all the thrust the boat needs in 15 knots. The second is where the finder still lists it: the unit steers her in a 13 or 14 knot wind, within 15 percent of the 15 knot breeze this site sizes for. On a boat shorter than the first column’s shortest length, the unit is more than the boat needs.

How we size it

Our figure is the longest boat one unit can steer in a 15 knot wind. It is a range because each kind of boat catches the wind differently. Here a houseboat gets full thrust to 69 ft, and a sailboat to 75 ft. The maker gives one range for every boat.

The table tries the Quick BTQ 250 on each kind of boat, at every length that kind of boat is built in. The wind is 15 knots and the rules are the finder’s own. A length counts as a fit when the unit gives the thrust that boat needs at the bow and the maker lists it for that length.

A boat up to 10 percent past the maker’s range still counts here, as it does in the finder. So the table runs down to 48 ft and up to 75 ft, just past Quick’s own range (52 to 69 ft).

It is sized for five kinds of boat here. For your own boat, the finder gives an answer that also counts your drive and who does the installing. The compare page sets this unit beside others.

What it costs installed

A yard job, everything in. Our estimate.

Installed by a yard
Boat Total installed
48 ft $19,616 to $29,908$37 to $57 a lb of thrust
60 ft $19,816 to $30,488$37 to $58 a lb of thrust
75 ft $20,066 to $31,208$38 to $59 a lb of thrust

From the shortest to the longest boat it is sized for.

What is in each total five lines

These totals are our estimate of a yard job: the unit’s price, plus a yard’s hours at $160 to $180 an hour, plus the batteries, cable and charger, plus the other parts the box does not hold. A Lifting the boat out of the water on a travel lift or a trailer so work can be done below the waterline. It is billed separately from the job itself. adds $960 to $3,620 at these lengths, with 5 to 7 days out of the water, worked from eight yards’ own rate cards. The hours come from what owners and yards report. The cost page builds the same figures line by line.

Each line of the estimate
Boat length The unit Yard labor Haul-out Batteries, cable, charger Other parts
48 ft $10,571 $5,120 to $12,60032 to 70 hours $960 to $2,320 $2,322 to $2,771 $643 to $1,646
60 ft $10,571 $5,120 to $12,60032 to 70 hours $1,160 to $2,900 $2,322 to $2,771 $643 to $1,646
75 ft $10,571 $5,120 to $12,60032 to 70 hours $1,410 to $3,620 $2,322 to $2,771 $643 to $1,646

For every length in the table above.

How the batteries, cable and charger add up. We price a battery bank close to the thruster, as the makers recommend, with 10 to 20 ft of cable out and back: red for the positive, black for the negative, cut to length. The low end is the cheapest battery that meets the figure and the shorter run; the high end is a sealed (AGM) battery and the longer run. The charger is a NOCO GEN5X2 two-bank shore charger.

Batteries and lugs are priced at Fisheries Supply and the cable and charger at Defender, read 26 October 2026.

  • At 24 V: two 12 V batteries in series, at least 1,000 CCA and 200 Ah each (Quick’s minimum), $1,996 for both; Quick’s cable table gives 2 x 1/0 to 2 x 3/0 AWG, priced on 4/0 to 2 x 4/0 AWG, the nearest size cut to length: $180 to $629 for the red and black cable and the lugs; a GEN5X2 charger, $146.

The sizing and the costs on this page are estimates, for guidance only and without warranty. They are no quote, and nobody has inspected your boat. Check them against the maker’s manual and your yard before you rely on them. Terms of use.

DIY breakdown

DIY 1 of 5: Yard job. A qualified professional does all of it.

DIY levels

  • Level 5: Owner install. No yard, no electrician.
  • Level 4: You install it, electrician connects. You mount and wire it; a marine electrician makes the final connections.
  • Level 3: Split with the yard. The yard does the below-waterline part; you do the wiring.
  • Level 2: Wiring prep only. The yard installs the unit and does the hull work; you do the wiring prep.
  • Level 1: Yard job. A qualified professional does all of it.

You Yard Electrician. The bar is labor hours; a haul-out is a note.

How we rate DIY

You: none Yard: 32 to 70 hours Electrician: in the yard’s hours Plus a haul-out.

Every step, and who does it one steps
  1. The whole job: hull, unit and wiring Yard 32 to 70 hours The low end is two crew over two days, the job as owners describe it on the forums. The high end rises with boat length between two real billed figures: 32 hours at 35 ft, and the largest invoice we hold, 70 hours at 47 ft.

Quick’s manual: “Installation and subsequent inspection or repair work must only be carried out by qualified personnel.” The manual.

Hours are labor only.

Related videos

One of Quick’s own videos, from its YouTube channel. They play only when you tap. A maker’s video is its pitch, so take any claim back to the figures on this page.

QNE - BT QSY Thruster RangeMaker Quick’s own channel

Know before you buy

What sets this model apart, what it costs to keep, and what to weigh.

Price per pound of thrust

$32.54 a lb The unit’s price over its published thrust, on the smallest size. The bars are Quick’s next sizes and the nearest other makers.

Controls

The thruster, a drilling template, gasket and O-ring. The TCD panel and the fuse holder are bought.

  • Quick FNTCD2022000A00, no US price found.
  • Quick FNTCDEX06000A00, FNTCDEX08000A00, no US price found.

Pricey wear part: anodes

$121.39 a change

A change costs $121.39. That is over three times the $33.75 for Sleipner’s anode on the same 250 mm tunnel (SM201180A, Defender). An anode is a plain block of metal that wears away by design, so you will buy it again.

They sit below the waterline, so a change means a haul-out or a diver.

Service and warranty

Quick gives at least 3 years from purchase, with repair or replacement at Quick's discretion. It is void if maintenance is done by anyone Quick has not authorized, or with parts that are not original. Removal and reinstalling are at your cost.

See Quick’s warranty Quick USA's conditions of warranty.

Special mentions

Battery: at 12 V it wants two batteries of 550 CCA and 125 Ah or more, Quick's figure. The cheapest that meets it is the Odyssey Extreme PC1800-FT start / deep cycle, $998.12.

Charger: a NOCO GEN5X2 two-bank shore charger, $146.41. It is the one our estimate prices.

Dealer prices at Fisheries Supply, read 26 October 2026.

What to weigh

The boat comes out of the water to install it: it needs a tunnel bore below the waterline.

Parts for the Quick BTQ 250

See the Quick BTQ 250 manual

The US dealer number comes first, then Quick’s own. Prices are each dealer’s on the day shown, before shipping and tax. Check the plate on your motor before you order: some parts change with the tunnel size, the voltage or the year.

For the install what the box leaves you to buy

21 parts

The manual button above opens it on the maker's site. It has the hull, wiring and fuse figures for this model.

From Quick’s BTQ Series installation manual REV 005A and the TCD control manual, September 2025, read 30 September 2026.

In the box
The thruster with its reversing contactor and anode, a drilling template, gasket, O-ring, the manual.
Bought separately
"Recommended Quick accessories not included": the TCD control panels, the line switch, the THF fuse holder. Plus the fuse, the cable, a battery disconnection switch, a 4 A control fuse and switch, the tube.
Charging
The manual gives a battery table by model, in amp-hours and cold cranking amps, and a diagram with the panel on the service battery. It says nothing about how the thruster bank is charged.

The manual’s words, page 10: “Standard supply and material included in the package: Thruster, Drilling template, Gasket, O-ring, Installation and use manual, Conditions of warranty.”

The “other parts” line in the estimate above covers these parts as a range, $643 to $1,646 at Fisheries Supply’s prices on 30 September 2026 and 26 October 2026, because the exact items depend on your boat. The batteries, cable and charger have a line of their own. The cost page has what every maker says about each part.

Tunnel tube

Fisheries Supply lists it as “Sleipner fiberglass tunnel tube, 250 mm bore, 1000 mm”.

Sold in lengths from about 39 to 60 in. This is the shortest: the yard cuts the tube to the width of your hull at the thruster. No Quick tube is listed at this bore. This one is another maker's.

Part number SM10010

Control panel

Ask for Quick FNTCD2022000A00.

Not sold at Fisheries Supply. Ask a Quick dealer.

Part number See the line above.

Control cable, panel to thruster

Ask for Quick FNTCDEX06000A00, FNTCDEX08000A00.

Not sold at Fisheries Supply. Ask the panel dealer.

Part number See the line above.

Main fuse

Ask for 500 A CNL DIN fuse. This one is for the BTQ 250-120, 120 KGF, double propeller, 12 V version.

Quick's figure for the BTQ 2512012 (BTQ manual, REV005A). Quick lists its TFH holders for it. Not listed at Fisheries Supply; ask a Quick dealer.

Part number See the line above.

Main fuse

Ask for 275 A CNL DIN fuse. This one is for the BTQ 250-120, 120 KGF, double propeller, 24 V version.

Quick's figure for the BTQ 2512024 (BTQ manual, REV005A). Quick lists its TFH holders for it. Not listed at Fisheries Supply; ask a Quick dealer.

Part number See the line above.

Main fuse

Ask for 275 A CNL DIN fuse. This one is for the BTQ 250-140, 140 KGF, double propeller, 24 V version.

Quick's figure for the BTQ 2514024 (BTQ manual, REV005A). Quick lists its TFH holders for it. Not listed at Fisheries Supply; ask a Quick dealer.

Part number See the line above.

Main fuse

Ask for 500 A CNL DIN fuse. This one is for the BTQ 250-240, 240 KGF, double propeller, 24 V version.

Quick's figure for the BTQ 2524024 (BTQ manual, REV005A). Quick lists its TFH holders for it. Not listed at Fisheries Supply; ask a Quick dealer.

Part number See the line above.

Fuse holder

Ask for Quick TFH fuse holder for the CNL fuse.

Ask the dealer who sells the fuse.

Part number See the line above.

Battery switch

Fisheries Supply lists it as “HD-Series 600 A battery switch, on/off”. This one is for the BTQ 250-120, 120 KGF, double propeller, 12 V and BTQ 250-240, 240 KGF, double propeller, 24 V version.

Rated at or above the 500 A main fuse. If your manual names its own switch, use that one.

Part number 3000

Battery switch

Fisheries Supply lists it as “m-Series 300 A battery switch, on/off”. This one is for the BTQ 250-120, 120 KGF, double propeller, 24 V and BTQ 250-140, 140 KGF, double propeller, 24 V version.

Rated at or above the 275 A main fuse. If your manual names its own switch, use that one.

Part number 2306

Control-circuit fuse holder

Fisheries Supply lists it as “Waterproof in-line ATO/ATC fuse holder”.

The maker asks for a 4 A fast-blow fuse on the control supply, with a switch.

Part number 5065

Batteries

Ask for 2 at 550 CCA and 125 Ah or more, in parallel. This one is for the BTQ 250-120, 120 KGF, double propeller, 12 V version.

You need 2. No listing at Fisheries Supply meets this in stock.

Part number See the line above.

Batteries

Ask for 2 at 550 CCA and 120 Ah or more, in series for 24 V. This one is for the BTQ 250-120, 120 KGF, double propeller, 24 V and BTQ 250-140, 140 KGF, double propeller, 24 V version.

You need 2. No listing at Fisheries Supply meets this in stock.

Part number See the line above.

Batteries

Ask for 2 at 1,000 CCA and 200 Ah or more, in series for 24 V. This one is for the BTQ 250-240, 240 KGF, double propeller, 24 V version.

You need 2. No listing at Fisheries Supply meets this in stock.

Part number See the line above.

Battery cable, red and black

Defender lists it as “Ancor tinned battery cable 4/0 AWG, cut to length, red or black”. This one is for the BTQ 250-120, 120 KGF, double propeller, 12 V version.

You need 10 ft of each color, twice over (20 ft of each). For about 20 ft of cable in all, out and back. Measure your run and check it against the cable table in the manual: never go smaller than it asks for.

Part number None on the listing. Order it by name.

Battery cable, red and black

Defender lists it as “Ancor tinned battery cable 4/0 AWG, cut to length, red or black”. This one is for the BTQ 250-120, 120 KGF, double propeller, 24 V and BTQ 250-140, 140 KGF, double propeller, 24 V version.

You need 10 ft of each color. For about 20 ft of cable in all, out and back. Measure your run and check it against the cable table in the manual: never go smaller than it asks for.

Part number None on the listing. Order it by name.

Battery cable, red and black

Defender lists it as “Ancor tinned battery cable 4/0 AWG, cut to length, red or black”. This one is for the BTQ 250-240, 240 KGF, double propeller, 24 V version.

This is the short run. A longer run takes heavier cable: the wiring calculator sizes yours. You need 5 ft of each color. For about 10 ft of cable in all, out and back. Measure your run and check it against the cable table in the manual: never go smaller than it asks for.

Part number None on the listing. Order it by name.

Cable lugs

Fisheries Supply lists it as “Tin-plated starter lugs, 4/0 AWG, bag of 10”. This one is for the BTQ 250-120, 120 KGF, double propeller, 12 V version.

You need 2 bags. The listing runs $47.52 to $49.44 by stud size. Eight ends on one run, with two spare.

Part number 91066-P10

Cable lugs

Fisheries Supply lists it as “Tin-plated starter lugs, 4/0 AWG, bag of 10”. This one is for the BTQ 250-120, 120 KGF, double propeller, 24 V and BTQ 250-140, 140 KGF, double propeller, 24 V version.

The listing runs $47.52 to $49.44 by stud size. Eight ends on one run, with two spare.

Part number 91066-P10

Cable lugs

Fisheries Supply lists it as “Tin-plated starter lugs, 4/0 AWG, bag of 10”. This one is for the BTQ 250-240, 240 KGF, double propeller, 24 V version.

This is the short run. A longer run takes heavier cable: the wiring calculator sizes yours. The listing runs $47.52 to $49.44 by stud size. Eight ends on one run, with two spare.

Part number 91066-P10

Charger

Fisheries Supply lists it as “GEN5X2 on-board charger, 10 A, 2 banks”.

Or a DC-to-DC charger from the house system: ask the electrician.

Part number GEN5X2

Outside the hull replacement parts in the water

3 parts

Anode

The metal that wears away in the water so the drive does not. Quick calls it “BTQ Anodes, Model 250”.

Read on Quick USA, Quick's own US store; Quick's manual site could not be opened.

Part number FVSGANBTQ25AA00
See it at Quick USA$121.39 Price read 29 Oct 2026

Propeller, left hand

The propeller on the drive. Quick calls it “Propellers, Model BTQ/BTR 250, Prop Side Left”.

Read on Quick USA, Quick's own US store; Quick's manual site could not be opened. Double propeller: one right and one left.

Part number FVSGEL250L05A00
See it at Quick USA$232.30 Price read 29 Oct 2026

Propeller, right hand

The propeller on the drive. Quick calls it “Propellers, Model BTQ/BTR 250, Prop Side Right”.

Read on Quick USA, Quick's own US store; Quick's manual site could not be opened. Double propeller: one right and one left.

Part number FVSGEL250R05A00
See it at Quick USA$232.30 Price read 29 Oct 2026

Inside the boat replacement parts on board

5 parts

Main fuse

The main fuse at the battery, in the rating the maker gives. Quick calls it “Bow Thruster Fuse, 400 Amp”. It fits the BTQ 250-140, 140 KGF, double propeller, 24V size on this page.

The 400 A rating is on Quick USA's page for this model; Quick sells that fuse as FVEFF400CNLDA00.

Part number FVEFF400CNLDA00
See it at Quick USA$23.65 Price read 29 Oct 2026

Control panel, on/off dual joystick (bow and stern)

The control at the helm. Quick calls it “TCD 2044 thruster double joystick controller”.

Runs a bow and a stern thruster.

Part number FNTCD2044000A00 Quick TCD2044
See it at Quick USA$952.77 Price read 29 Oct 2026

Control panel, on/off push buttons

The control at the helm. Quick calls it “TCD 2022 thruster controller”.

Its manual holds the run limit.

Part number FNTCD2022000B00 Quick TCD2022
See it at Quick USA$465.12 Price read 29 Oct 2026

Control panel, on/off single joystick

The control at the helm. Quick calls it “TCD 2042 thruster joystick control”.

Part number FNTCD2042000C00 Quick TCD2042
See it at Quick USA$539.67 Price read 29 Oct 2026

Motor coupling kit

The electric motor that turns the propeller. Quick calls it “Quick OSP Coupling Kit, BTQ250”.

Read on Quick USA, Quick's own US store; Quick's manual site could not be opened. The coupling joins the motor to the drive.

Part number FVSGG2501919A00
See it at Quick USA$394.51 Price read 29 Oct 2026

The install parts are matched to Quick’s own figures and priced at Fisheries Supply, with the battery cable at Defender, cut to length.

Spare part numbers come from Quick’s parts pages and manuals. A dealer may sell a part we have not priced. Search for the number.

Other sizes and close alternatives

Compare them side by side

The other makers listed are the nearest match each makes, of the same style and for the same end, within a quarter of its thrust. The compare page lists every model, and the thruster index lists every model with a page here.

For the yard and the installer

Every published figure, with its source.

Full spec sheet thrust, motor, mounting, price, part number, documents
Full spec sheet
Thrust and motor
Thrust 265 lb (120 kgf) As printed: 120 Kgf (308/ lb)
Motor6.5 kW
Voltage12 V or 24 V
Run limitNot published
Installation
TypeTunnel, fixed mount
End of the boatBow
Tunnel diameter250 mm
What it does to the hullTunnel bore below the waterline
Haul-out to install itYes
Maker’s boat length42 to 55 ft
Price and ordering
Price $8,624 equipment only, the maker's own price, quickusastore.com, 26 October 2026
Part number FGBT25120120T00BTQ 250-120, 120 KGF, double propeller, 12 V
FGBT25120240T00BTQ 250-120, 120 KGF, double propeller, 24 V
FGBT25140240T00BTQ 250-140, 140 KGF, double propeller, 24 V
FGBT25240240T00BTQ 250-240, 240 KGF, double propeller, 24 V
Documents
Manual Installation manual (PDF)on the maker's site
The site’s reviewQuick thruster review

Every published figure the site holds for the Quick BTQ 250, with where each came from.

The tunnel: length and depth rules

Tunnel length. The optimal length is three to four times the tube diameter. A ratio of up to six can be tolerated. Longer tubes lose more of the thrust to friction. Quick’s installation manual.

Depth below the waterline. In the bow and as low as possible, at least 0.75 times the tunnel diameter below the waterline, to avoid cavitation at the propeller. BTQ250 and BTQ300 installation manual, REV006C.

Our notes from the manual and listings

In the box: The thruster, a drilling template, gasket and O-ring. The TCD panel and the fuse holder are bought.

BTQ 250-120, 120 KGF, double propeller, 12 V

Twin counter-rotating propellers in a 250 mm tunnel. This is the 120 kgf version, the only one sold at 12 V. The category page puts the whole BTQ 250 series on boats of 39 to 69 ft. The band here is the US store's own figure for this version. The manual gives a 500 A fuse at 12 V and a weight of 35.5 kg.

Its cable is two 2/0 AWG per leg for a total run under 5 m (positive plus negative), two 3/0 AWG per leg to 10 m, two 4/0 AWG per leg to 20 m. At 24 V the fuse is 275 A and the cable 2/0, then two 1 AWG, then two 2/0 per leg.

The newer BTQ250/300 manual prints one size per model with no run length, smaller than the older manual's long band. The published thrust reads "120 Kgf (308/ lb)", the 140's pounds against the 120's kgf, kept as printed. The manual prints a fuse and cable sizes but no current draw and no battery figure. No product page gives a run time.

The installation manual says the unit is not designed for continuous use and leaves the limit to the control panel. The panel's own manual cuts the command after about five minutes and resets it after a cool-down the panel computes. The tunnel sits at least three quarters of its diameter below the waterline. Once a year the unit comes apart for inspection, anode included.

The warranty runs three years from purchase, with repair or replacement at Quick's discretion. The warranty is void for maintenance by anyone Quick has not authorized or for non-original parts. Removal and reinstalling are at your cost. Quick announced a brushless QSY range in September 2026, rated for ten minutes' continuous running. The QSY range will sit beside this brushed line. The price is Quick's US store's own for this size at 12 V, read 12 October.

BTQ 250-120, 120 KGF, double propeller, 24 V

The price is Quick's US store's own for this size at 24 V, read 12 October.

BTQ 250-140, 140 KGF, double propeller, 24 V

The 140 kgf BTQ 250, twin counter-rotating propellers, 24 V only. The manual gives a 275 A fuse at 24 V and a weight of 34.2 kg. Its cable is 2/0 for a total run under 5 m (positive plus negative), two 1 AWG per leg to 10 m, two 2/0 AWG per leg to 20 m. The manual prints the same 34.2 kg for this and the 24 V 120 kgf unit.

BTQ 250-240, 240 KGF, double propeller, 24 V

The 240 kgf BTQ 250, twin counter-rotating propellers, 24 V only. On the manual's own figures it makes far more thrust per kilowatt than the 140 kgf unit below it (24 kgf per kW against 17.5). The manual gives a 500 A fuse at 24 V and a weight of 49.1 kg.

Its cable is two 1 AWG per leg for a total run under 5 m (positive plus negative), two 2/0 AWG per leg to 10 m, two 3/0 AWG per leg to 20 m. The newer BTQ250/300 manual prints "(2 x AWG 3/0)" in this model's fuse cell.

Where each point above comes from
  • It is sold at 12 V and at 24 V.The maker's and dealers' listings
  • The boat comes out of the water to install it: it needs a tunnel bore below the waterline.The mounting: a bore through the hull, or a housing recessed into it

For the yard and the installer

Every published figure, with its source.

Full spec sheet thrust, motor, mounting, price, part number, documents
Full spec sheet
Thrust and motor
Thrust 309 lb (140 kgf) As printed: 140 Kgf (309 lb)
Motor8 kW
Voltage24 V
Run limitNot published
Installation
TypeTunnel, fixed mount
End of the boatBow
Tunnel diameter250 mm
What it does to the hullTunnel bore below the waterline
Haul-out to install itYes
Maker’s boat length45 to 59 ft
Price and ordering
Price $9,818 equipment only, the maker's own price, quickusastore.com, 26 October 2026
Part number FGBT25120120T00BTQ 250-120, 120 KGF, double propeller, 12 V
FGBT25120240T00BTQ 250-120, 120 KGF, double propeller, 24 V
FGBT25140240T00BTQ 250-140, 140 KGF, double propeller, 24 V
FGBT25240240T00BTQ 250-240, 240 KGF, double propeller, 24 V
Documents
Manual Installation manual (PDF)on the maker's site
The site’s reviewQuick thruster review

Every published figure the site holds for the Quick BTQ 250, with where each came from.

The tunnel: length and depth rules

Tunnel length. The optimal length is three to four times the tube diameter. A ratio of up to six can be tolerated. Longer tubes lose more of the thrust to friction. Quick’s installation manual.

Depth below the waterline. In the bow and as low as possible, at least 0.75 times the tunnel diameter below the waterline, to avoid cavitation at the propeller. BTQ250 and BTQ300 installation manual, REV006C.

Our notes from the manual and listings

In the box: The thruster, a drilling template, gasket and O-ring. The TCD panel and the fuse holder are bought.

BTQ 250-120, 120 KGF, double propeller, 12 V

Twin counter-rotating propellers in a 250 mm tunnel. This is the 120 kgf version, the only one sold at 12 V. The category page puts the whole BTQ 250 series on boats of 39 to 69 ft. The band here is the US store's own figure for this version. The manual gives a 500 A fuse at 12 V and a weight of 35.5 kg.

Its cable is two 2/0 AWG per leg for a total run under 5 m (positive plus negative), two 3/0 AWG per leg to 10 m, two 4/0 AWG per leg to 20 m. At 24 V the fuse is 275 A and the cable 2/0, then two 1 AWG, then two 2/0 per leg.

The newer BTQ250/300 manual prints one size per model with no run length, smaller than the older manual's long band. The published thrust reads "120 Kgf (308/ lb)", the 140's pounds against the 120's kgf, kept as printed. The manual prints a fuse and cable sizes but no current draw and no battery figure. No product page gives a run time.

The installation manual says the unit is not designed for continuous use and leaves the limit to the control panel. The panel's own manual cuts the command after about five minutes and resets it after a cool-down the panel computes. The tunnel sits at least three quarters of its diameter below the waterline. Once a year the unit comes apart for inspection, anode included.

The warranty runs three years from purchase, with repair or replacement at Quick's discretion. The warranty is void for maintenance by anyone Quick has not authorized or for non-original parts. Removal and reinstalling are at your cost. Quick announced a brushless QSY range in September 2026, rated for ten minutes' continuous running. The QSY range will sit beside this brushed line. The price is Quick's US store's own for this size at 12 V, read 12 October.

BTQ 250-120, 120 KGF, double propeller, 24 V

The price is Quick's US store's own for this size at 24 V, read 12 October.

BTQ 250-140, 140 KGF, double propeller, 24 V

The 140 kgf BTQ 250, twin counter-rotating propellers, 24 V only. The manual gives a 275 A fuse at 24 V and a weight of 34.2 kg. Its cable is 2/0 for a total run under 5 m (positive plus negative), two 1 AWG per leg to 10 m, two 2/0 AWG per leg to 20 m. The manual prints the same 34.2 kg for this and the 24 V 120 kgf unit.

BTQ 250-240, 240 KGF, double propeller, 24 V

The 240 kgf BTQ 250, twin counter-rotating propellers, 24 V only. On the manual's own figures it makes far more thrust per kilowatt than the 140 kgf unit below it (24 kgf per kW against 17.5). The manual gives a 500 A fuse at 24 V and a weight of 49.1 kg.

Its cable is two 1 AWG per leg for a total run under 5 m (positive plus negative), two 2/0 AWG per leg to 10 m, two 3/0 AWG per leg to 20 m. The newer BTQ250/300 manual prints "(2 x AWG 3/0)" in this model's fuse cell.

Where each point above comes from
  • The boat comes out of the water to install it: it needs a tunnel bore below the waterline.The mounting: a bore through the hull, or a housing recessed into it

For the yard and the installer

Every published figure, with its source.

Full spec sheet thrust, motor, mounting, price, part number, documents
Full spec sheet
Thrust and motor
Thrust 529 lb (240 kgf) As printed: 240 Kgf (529 lb)
Motor10 kW
Voltage24 V
Run limitNot published
Installation
TypeTunnel, fixed mount
End of the boatBow
Tunnel diameter250 mm
What it does to the hullTunnel bore below the waterline
Haul-out to install itYes
Maker’s boat length52 to 69 ft
Price and ordering
Price $10,571 equipment only, the maker's own price, quickusastore.com, 26 October 2026
Part number FGBT25120120T00BTQ 250-120, 120 KGF, double propeller, 12 V
FGBT25120240T00BTQ 250-120, 120 KGF, double propeller, 24 V
FGBT25140240T00BTQ 250-140, 140 KGF, double propeller, 24 V
FGBT25240240T00BTQ 250-240, 240 KGF, double propeller, 24 V
Documents
Manual Installation manual (PDF)on the maker's site
The site’s reviewQuick thruster review

Every published figure the site holds for the Quick BTQ 250, with where each came from.

The tunnel: length and depth rules

Tunnel length. The optimal length is three to four times the tube diameter. A ratio of up to six can be tolerated. Longer tubes lose more of the thrust to friction. Quick’s installation manual.

Depth below the waterline. In the bow and as low as possible, at least 0.75 times the tunnel diameter below the waterline, to avoid cavitation at the propeller. BTQ250 and BTQ300 installation manual, REV006C.

Our notes from the manual and listings

In the box: The thruster, a drilling template, gasket and O-ring. The TCD panel and the fuse holder are bought.

BTQ 250-120, 120 KGF, double propeller, 12 V

Twin counter-rotating propellers in a 250 mm tunnel. This is the 120 kgf version, the only one sold at 12 V. The category page puts the whole BTQ 250 series on boats of 39 to 69 ft. The band here is the US store's own figure for this version. The manual gives a 500 A fuse at 12 V and a weight of 35.5 kg.

Its cable is two 2/0 AWG per leg for a total run under 5 m (positive plus negative), two 3/0 AWG per leg to 10 m, two 4/0 AWG per leg to 20 m. At 24 V the fuse is 275 A and the cable 2/0, then two 1 AWG, then two 2/0 per leg.

The newer BTQ250/300 manual prints one size per model with no run length, smaller than the older manual's long band. The published thrust reads "120 Kgf (308/ lb)", the 140's pounds against the 120's kgf, kept as printed. The manual prints a fuse and cable sizes but no current draw and no battery figure. No product page gives a run time.

The installation manual says the unit is not designed for continuous use and leaves the limit to the control panel. The panel's own manual cuts the command after about five minutes and resets it after a cool-down the panel computes. The tunnel sits at least three quarters of its diameter below the waterline. Once a year the unit comes apart for inspection, anode included.

The warranty runs three years from purchase, with repair or replacement at Quick's discretion. The warranty is void for maintenance by anyone Quick has not authorized or for non-original parts. Removal and reinstalling are at your cost. Quick announced a brushless QSY range in September 2026, rated for ten minutes' continuous running. The QSY range will sit beside this brushed line. The price is Quick's US store's own for this size at 12 V, read 12 October.

BTQ 250-120, 120 KGF, double propeller, 24 V

The price is Quick's US store's own for this size at 24 V, read 12 October.

BTQ 250-140, 140 KGF, double propeller, 24 V

The 140 kgf BTQ 250, twin counter-rotating propellers, 24 V only. The manual gives a 275 A fuse at 24 V and a weight of 34.2 kg. Its cable is 2/0 for a total run under 5 m (positive plus negative), two 1 AWG per leg to 10 m, two 2/0 AWG per leg to 20 m. The manual prints the same 34.2 kg for this and the 24 V 120 kgf unit.

BTQ 250-240, 240 KGF, double propeller, 24 V

The 240 kgf BTQ 250, twin counter-rotating propellers, 24 V only. On the manual's own figures it makes far more thrust per kilowatt than the 140 kgf unit below it (24 kgf per kW against 17.5). The manual gives a 500 A fuse at 24 V and a weight of 49.1 kg.

Its cable is two 1 AWG per leg for a total run under 5 m (positive plus negative), two 2/0 AWG per leg to 10 m, two 3/0 AWG per leg to 20 m. The newer BTQ250/300 manual prints "(2 x AWG 3/0)" in this model's fuse cell.

Where each point above comes from
  • The boat comes out of the water to install it: it needs a tunnel bore below the waterline.The mounting: a bore through the hull, or a housing recessed into it

Not sure this is the one? The thruster finder asks about your boat and prices every unit that fits.

Where to go next

The specs are the maker’s and the dealers’, on the dates shown. The sizing and the costs are our arithmetic, done without seeing your boat.