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Drawing of a pod thruster on the transom: a short tube with a prop at each end, below the waterline. — Our drawing of a external thruster, the same for every maker. It is not Yacht Thruster’s own design.

Yacht Thruster · external thruster · stern

Yacht Thruster 300C (Compact Thruster): specs, price and boat fit

It gives 148 lb (67 kgf) of push. Yacht Thruster sells it for boats of up to 47 ft. It runs on 24 V.

Haul-out to install
DIY 3 of 5: split with the yard
2-year warranty

Quick stats

Thrust 148 lb 67 kgf, Yacht Thruster's rating
Boat length Up to 47 ft Yacht Thruster's own range
Price per lb of thrust Not worked out It needs a price and a thrust figure
Voltage 24 V As sold
Battery at 24 V 175 CCA Two batteries, near the thruster
Run limit Up to 5 min Continuous, with an automated shutdown
To install it Haul-out The boat comes out of the water
Mounts External Fixed mount, stern

About the Yacht Thruster 300C (Compact Thruster)

The 300C is the short version of Yacht Thruster’s pod, built for the stern only: it tucks under a swim platform or onto an upright transom and gives 148 lb of push, for boats up to 47 ft. It moves the back of the boat across a slip without a tunnel, and with the motor outside the hull, nothing is lost below decks.

Yacht Thruster quotes rather than lists a price. A control box and a joystick or touchpad come in the kit. It runs on 24 V, so a 12 V boat adds a 24 V bank, and batteries, cable and charging come to about $700 to $731. On a hard-chined hull the maker says a fiberglass adapter may be needed. See what else you buy.

It goes on with the boat out of the water, through one sealed fitting and two rod holes. The pod stays in the water all season, so growth on the propeller is the thing to watch: keep the antifouling fresh over an aluminum primer and look it over at every haul-out. Use short pushes; the maker allows up to five minutes at a stretch and twenty-five in an hour, with an automatic shutdown.

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

Where this summary comes from (5 sources, read 13 October 2026)

Will the Yacht Thruster 300C (Compact Thruster) steer your boat?

51 FT TRAWLER · STERN · 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 17 kt

On a 51 ft trawler the Yacht Thruster 300C (Compact Thruster) (148 lb) steers her in a 17 knot breeze. Her stern needs about 120 lb from an external unit on the transom to steer her in a 15 knot breeze.

The finder leaves it off her list. We found no published price for Yacht Thruster, and the finder lists only units it can price.

An external unit at the stern of a 51 ft trawler 120 lb ★ this unit · 1 to 3: the three cheapest others that steer her at 13 kt or more, installed

★ Yacht Thruster 300C (Compact Thruster) this unit 148 lb · pod on transom no US price Steers her at 17 kt
1 DockStar Smart Thruster, stern 90 lb · bolt-on removable from $4,430 Steers her at 13 kt
2 Max Power CT100 stern pod 212 lb · pod on transom from $8,371 Steers her at 20 kt
3 Sleipner SX80 212 lb · pod on transom from $12,050 Steers her at 20 kt

The Yacht Thruster 300C (Compact Thruster) on a trawler, by length

25 ft34 kt
30 ft29 kt
35 ft25 kt
40 ft22 kt
45 ft19 kt
50 ft17 kt
55 ft16 kt
60 ft14 kt
65 ft13 kt
70 ft12 kt
75 ft12 kt
80 ft11 kt

Outlined: the finder does not list it at that length (under 13 kt, far more than she needs, or outside Yacht Thruster’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 Yacht Thruster says Up to 47 ft The maker's own range, from its listing

What our sizing says 51 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 knots	Still a fit, in lighter wind
Pontoon & tritoon	Not listed. Its maker does not name this kind of hull.
Sailboat	40 to 51 ft	None
Houseboat	Not listed. Its maker does not name this kind of hull.
Catamaran	Not listed. An external unit bolts to the side of a single hull at the bow or to its transom, and a cat has two narrow hulls with a bridgedeck between them, so there is nowhere forward to hang one.
Trawler	40 to 51 ft	None
Motor yacht	40 to 51 ft	None
Bass & flats	No length. More thrust than the boat needs.
Wake & ski boats	No length. More thrust than the boat needs.
Express cruiser	51 ft only	None
Center console	No length. More thrust than the boat needs.

The Yacht Thruster 300C (Compact Thruster) 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 every kind of boat it fits gets full thrust to 51 ft. The maker gives one range for every boat.

The table tries the Yacht Thruster 300C (Compact Thruster) 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 where it mounts 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 up to 51 ft, just past Yacht Thruster’s own range (up to 47 ft).

It is sized for four 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

No US dollar price is published for the Yacht Thruster 300C (Compact Thruster), so we build no total for it. The yard’s share of the job is on the cost page.

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 3 of 5: Split with the yard. The yard does the below-waterline part; you do the wiring.

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: 4 to 16 hours Yard: 1 to 2 hours Electrician: 2 to 4 hours Plus a haul-out.

Your part needs:Heavy battery cableCrimping big lugs

Every step, and who does it three steps

Bolt the pod to the hull below the waterline Yard 1 to 2 hours The maker’s figure, as Yachts International reported it: one to two hours for the thruster itself, without the cable connections. Source.
Mount the battery box, switch and fuse holder; run and secure the cables You 4 to 16 hours Our estimate. No maker times this step, and a first-time owner is slower than a yard, so the range is wide.
Final connections at the battery and the motor, load test Electrician 2 to 4 hours Our estimate. Nobody publishes a time for the final connections and test on their own.

A qualified marine electrician should make the final connections and test them before first use. Hours are labor only.

Know before you buy

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

Price per pound of thrust

There is no US price to divide by its thrust.

Controls

The through-hull fitting, its seals and the control box come with it.

The panel your manual names, no US price found.
The control cable your manual names, no US price found.

Service and warranty

Yacht Thruster's FAQ gives 2 years, and its product pages give 3.

See Yacht Thruster’s warranty Yacht Thruster's FAQ.

Special mentions

Battery: at 24 V it wants two batteries of 175 CCA, sized to the draw. The cheapest that meets it is the Lifeline GPL-1400T AGM starting, $256.72. Check your own bank.

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 three small holes, below the waterline.

No US dollar price is published for it, so we can work out no installed cost.

Short pushes only: Yacht Thruster rates the motor for up to 5 min at a stretch.

Parts for the Yacht Thruster 300C (Compact Thruster)

Search for the number as printed here, with no spaces. 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.

Find a part

For the install what the box leaves you to buy

10 parts

From Yacht Thruster’s Overview and FAQ pages, read 30 September 2026.

In the box: The thruster with its through-hull fitting and seals, the rods and seals of the mounting kit, the control box and controls.
Bought separately: Fuse, switch, cable and battery are not named on either page.
Charging: A 12 V unit may share the boat's supply, even a windlass feed if a specialist agrees. A 24 V unit on a 12 V boat needs a bank of its own. Neither page names a charger.

In Yacht Thruster’s words, from the FAQ: “In order to run a 24V Yacht Thruster with an on-board voltage of 12V, an additional 24V battery bank will be required.”

A yard job adds these parts on top of the unit: $88 to $268 for the priced ones, at Fisheries Supply’s prices on 26 October 2026, plus the batteries, cable and charger. The cost page has what every maker says about each part.