Boat Thruster Guide

What to buy, what it costs, what it takes to fit

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Thruster specs

ezDrive Streamline H: specs, price and the boats it fits

The Streamline H is ezDrive’s most compact stern thruster, built for wake and ski boats with crowded transoms: it stands 7 to 8 in tall and sits 16 in off the hull, tucked under the swim platform. It pushes 88 lb both ways on 12 V, enough to walk the stern into a slip or swing around for a fallen rider. ezDrive has sold it since 2018, and several wake-boat builders offer it from the factory.

ezDrive publishes no price; you ask for a quote, and it will send a free full-size mock-up to check the fit first. The kit holds the iBox, the rocker switch, the mounting hardware and a 225 A breaker that doubles as the shut-off. You add the battery cable, which must be at least 1/0 gauge, and ideally a battery of its own. See what else you buy.

It goes on through one 1.25 in hole in the transom, with no fiberglass work; the guide allows eight hours, and one Nautique G23 owner took about ten. The motor is sealed and needs no service. It runs up to ten minutes at a stretch, asking you to confirm after three. Warranty: two years once registered, for the first owner and only on the boat it was fitted to.

Fitting it yourself? The installer section has every spec, and the Yacht Thruster and ezDrive review sets this model against the rest of the ezDrive range.

Where this summary comes from (8 sources, read 13 October 2026)

Key facts

  • DIY level 4 of 5 You fit it, electrician connects
  • Thrust 88 lb 40 kgf, ezDrive's rating
  • Boat length Not published See our sizing below
  • Price No US price None is published, so there is no fitted cost to work out
  • Fitted by a yard No total No price to build on
  • Voltage 12 V As sold
  • Mounts External Fixed mount, stern
  • To fit it Haul-out The boat comes out of the water
  • Run limit Up to 10 min Continuous

Every figure here is the maker’s or a dealer’s. No US price is published, so there is no fitted cost to estimate. The full spec sheet is further down.

How much of the install is yours

DIY 4 of 5: You fit it, electrician connects. You mount and wire it; a marine electrician makes the final connections.

DIY levels

  • Level 5: Owner install. No yard, no electrician.
  • Level 4: You fit 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 fits 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: 8 to 16 h Yard: none Electrician: 2 to 4 h Out of the water on its trailer, or hauled.

  1. Mount the thruster at the transom; fit the battery and control box; run the cables You 8 to 16 h Our estimate. ezDrive prints no time; one owner reported about 10 hours, and the range is widened for a first install. Source.
  2. Final connections at the battery and the motor, load test Electrician 2 to 4 h Our estimate. Nobody publishes a time for the final connections and test on their own.

Your part needs:Drilling at the transomHeavy battery cableCrimping big lugs

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

Is it right for your boat?

What ezDrive says No boat length Our sizing is the guide here
What our sizing says 37 to 48 ft Full thrust in 15 knots. The longest boat of each kind is in the table.

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 sailboat gets full thrust to 37 ft, and an express cruiser to 48 ft.

The table below tries the ezDrive Streamline H 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. ezDrive publishes no boat length, so thrust alone decides.

The ezDrive Streamline H against each kind of boat, in a 15 knot wind. Our sizing, from the finder’s own rules.
Boat Full thrust at 15 knotsStill a fit, in lighter wind
Pontoon & tritoon Not listed. Its maker does not name this kind of hull.
Sailboat 32 to 37 ft 38 to 56 ftfull thrust to about 10 knots at 56 ft
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 31 to 37 ft 38 to 55 ftfull thrust to about 10 knots at 55 ft
Motor yacht 35 to 37 ft 38 to 55 ftfull thrust to about 10 knots at 55 ft
Bass & flats No length. More thrust than the boat needs.
Wake & ski boats No length. More thrust than the boat needs.
Express cruiser 40 to 48 ft 49 to 65 ftfull thrust to about 11 knots at 65 ft
Center console No length. More thrust than the boat needs.

Reading the two length columns. 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 falls short of what the boat needs by no more than 10 percent, and gives the whole figure only in the lighter wind named. On a boat shorter than the first column’s shortest length, the unit is more than the boat needs.

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 fitting. The compare page sets this unit beside others.

What it costs fitted

No US dollar price is published for the ezDrive Streamline H, 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.

What else you buy

What follows comes from ezDrive’s Streamline installation guide and the FAQ, 26 July 2022, read 30 September 2026.

In the box
The thruster, the iBox, the rocker control, mounting hardware, nozzles and tools, and a 225 A push-to-trip breaker, which also serves as the quick shut-off.
Bought separately
The 1/0 AWG battery cable, sealant, a 5 A in-line fuse for the joystick or throttle option.
Charging
It wires straight to a 12 V battery, and ezDrive suggests a Group 31 AGM of its own. The guide says nothing about a charger.

The manual’s words, page 2: “A dedicated AGM battery is recommended to power your ezDrive thruster, however, it is not required for every installation.”

A yard job adds these parts on top of the unit: $8 to $12 for the priced ones below, at Fisheries Supply’s prices on 30 September 2026, plus the batteries, cable and charger.

Parts the ezDrive Streamline H’s box leaves to you, from the makers’ manuals read 30 September 2026. “What to ask for” is ezDrive’s own part or model where its manual names one, otherwise the dealer’s item.
Part What it is What to ask for Dealer price
Control-circuit fuse and switch A small fuse, and often a switch, on the thin wire that powers the panel or control box. A 5 A in-line fuse on the joystick or throttle feed $8–$12Blue Sea in-line ATO fuse holders, at Fisheries Supply, read 16 October 2026.
Battery cable and lugs The two heavy cables from the battery to the motor, sized to the length of the run. The wiring calculator sizes them. 1/0 AWG minimum In the electrical line
Battery bank A cranking-type bank near the motor, sized by the maker's cold cranking amps. The battery calculator checks it. ezDrive names none In the electrical line
Charger or charge feed How the thruster bank gets charged: a shore charger of its own, a DC-to-DC charger or charging relay from the boat's system, or a charger built into the unit. ezDrive names none $146–$305NOCO GEN5X2 shore charger, Victron Orion-Tr Smart DC-DC charger, Blue Sea ML-ACR charging relay, at Fisheries Supply.

The cost page has the whole list with what every maker says about each part.

For the yard and the installer

The full spec sheet, grouped the way a yard reads it. Every figure is the maker’s or a dealer’s, with its source.

The ezDrive Streamline H, every published figure the site holds, with where each came from.
Thrust and motor
Thrust 88 lb (40 kgf) As printed: 88lbs at 12v, 77lbs at 10v
Voltage12 V
Fitting
TypeExternal, fixed mount
End of the boatStern
What it does to the hull1.25 in stainless steel threaded thru-hull fitting through the transom; position not stated relative to the waterline
Haul-out to fit itYes
Maker’s boat lengthNot published
Price and ordering
Price No US price published
Part number Not held for this listing
Documents
Manual Installation manual (PDF)on the maker's site
Warranty ezDrive gives 2 years for pleasure use and 1 for commercial use. ezDrive's warranty page
The site’s reviewYacht Thruster and ezDrive review

Draw, cable, fuse and battery, at each voltage

These are the maker’s own figures, at each voltage it is sold at. The cable is the size for the shortest run in the maker’s table. A longer run may need heavier cable, and the wiring calculator works that out for your own boat.

The ezDrive Streamline H’s draw, cable, fuse, battery and run limit, as the maker publishes them.
Voltage Draw Maker’s cable Fuse Battery Run limit
12 V 245 Anominal draw At least 1/0 AWG, whatever the run; smaller cable voids the warranty, the maker saysStreamline installation guide, page 2 225 A breakerStreamline installation guide, parts list Suggests Group 31 AGMezDrive FAQ up to 10 min continuousFAQ

What to weigh

Each point names the fact it rests on.

What to weigh

  • The boat comes out of the water to fit it: it needs a 1.25 in stainless steel threaded thru-hull fitting through the transom; position not stated relative to the waterline.The mount goes through the hull, and the maker describes no fitting afloat
  • ezDrive publishes no boat length for it. The boat table is our sizing alone.The maker's documents, as the database records them
  • No US dollar price is published for it, so we can work out no fitted cost.The maker and the dealers the database reads

What the manual and listings say

This is the note we keep on the ezDrive Streamline H, written from the maker’s manual, its product pages and the dealer’s listing.

In the box: The kit has the iBox, a rocker control and a 225 A breaker. Battery cable is bought.

Our note

The most compact of ezDrive's three mounts: 7 to 8 in tall and 16 in out from the hull, 37 lb in aluminum or 40 lb in stainless. A 12 V transom unit for wake and ski boats, through one 1.25 in threaded fitting in the transom. ezDrive rates it 88 lb at 12 V and 77 lb at 10 V, and it draws 245 A.

It runs up to ten minutes, with a confirm-to-continue at three and a quarter minutes. ezDrive does not say whether it can be fitted afloat. No price is published. The maker quotes by email. A dedicated Group 31 AGM battery is recommended, not required.

Videos

Two of ezDrive’s own videos, from its YouTube channel: how the unit works, drawn, and a full install on a wake boat. They are the maker’s pitch. Watch them for what the unit looks like and how it goes in, and take any claim back to the figures above.

ezDrive’s own video, on ezDrive’s YouTube channel. The picture is a still from it.
ezDrive’s own video, on ezDrive’s YouTube channel. The picture is a still from it.

Other sizes and close alternatives

The same 88 lb unit, sold for other mounts:

These are ezDrive’s nearest sizes by thrust, in any of its lines.

These are other makers’ units of the same style, for the same end, within a quarter of its published thrust. Each is that maker’s nearest match.

Compare them side by side

Every model with a page here is listed, maker by maker, on the thruster index.

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.