Boat Thruster Guide

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

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Thruster specs

VETUS Bow 180: specs, price and the boats it fits

The Bow 180 fills the step between the Bow 160 and the Bow 220 in VETUS’s 250 mm tunnel range: 397 lb of push from a 7 kW motor on 24 V, by its manual.

Not sold in the US right now. No US store or distributor lists the VETUS Bow 180: we checked Defender, Fisheries Supply and Citimarine on October 15, 2026. Its specs and parts stay here for owners of boats built or bought abroad. For one to buy here, see the models on the VETUS thruster review that have a US price.

US stores sell the 160 and the 220 but not this one, so for a US boat the nearest choices are those two. The manual gives a 400 A draw and a four-minute rating, and the unit weighs 55 kg without its tunnel.

At 400 A on 24 V the battery wants to sit near the bow on short, heavy cable. Brushes and the anode need a yearly check, and the three-year warranty runs through the selling dealer.

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

Where this summary comes from (3 sources, read 15 October 2026)

Key facts

  • DIY level 2 of 5 Wiring prep only
  • Thrust 397 lb 180 kgf, VETUS's rating. The listing prints 405 lb
  • 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 24 V As sold
  • Mounts Tunnel Fixed mount, bow
  • To fit it Haul-out The boat comes out of the water
  • Run limit Not published Ask the maker before long use

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 2 of 5: Wiring prep only. The yard fits the unit and does the hull work; you do the wiring prep.

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: 4 to 16 h Yard: 32 to 70 h Electrician: 2 to 4 h Plus a haul-out.

  1. Cut, bond and fair the tunnel; fit the gear leg, motor and propeller Yard 32 to 70 h 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.
  2. Mount the battery box, switch and fuse holder; run and secure the cables You 4 to 16 h Our estimate. No maker times this step, and a first-time owner is slower than a yard, so the range is wide.
  3. 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:Heavy 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 VETUS says No boat length Our sizing is the guide here
What our sizing says 50 to 76 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 houseboat gets full thrust to 50 ft, and a catamaran to 76 ft.

The table below tries the VETUS Bow 180 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. VETUS publishes no boat length, so thrust alone decides.

The VETUS Bow 180 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. A pontoon has no hull body between the logs to bore a tunnel through, and nobody sells one for these boats.
Sailboat 55 to 67 ft 68 to 80 ftfull thrust to about 13 knots at 80 ft
Houseboat 41 to 50 ft 51 to 74 ftfull thrust to about 10 knots at 74 ft
Catamaran 63 to 76 ft 77 to 80 ftfull thrust to about 14 knots at 80 ft
Trawler 55 to 66 ft 67 to 80 ftfull thrust to about 13 knots at 80 ft
Motor yacht 55 to 66 ft 67 to 80 ftfull thrust to about 13 knots at 80 ft
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.

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 five 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 VETUS Bow 180, 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 VETUS’s BOW55D installation manual 020522.11 r08 and the BOW PRO Boosted manual 020808.04 r09, May 2026 and February 2026, read 30 September 2026.

In the box
The unit assembled or in parts, the zinc anode, insulated gaskets, the drill template, the solenoid switches and the 5 A control fuse on the motor. BOW PRO: the thruster fuse in the connection unit.
Bought separately
The tunnel, the main switch (BATSW250 or BATSW600), the main fuse (ZE) and holder (ZEHC100), the cable, the control panel and its cable.
Charging
Every VETUS manual wants "its own separate battery or batteries" near the thruster, sealed if it shares the motor's compartment. The BOW PRO Boosted units carry a charger (12 V, 80 A) fed from the boat's bank, with a fused feed cable. The other manuals show an alternator and a battery separator on the wiring diagram and say nothing more.

The manual’s words, page 22 of the Boosted manual: “By connecting the 24 Volt battery bank to the MCVB boosted charge connection, the 48 Volt, battery bank is charged. An additional charging facility is not required.”

A yard job adds these parts on top of the unit: $635 to $1,634 for the priced ones below, at Fisheries Supply’s prices on 30 September 2026, plus the batteries, cable and charger.

Parts the VETUS Bow 180’s box leaves to you, from the makers’ manuals read 30 September 2026. “What to ask for” is VETUS’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
Tunnel tube The fiberglass, aluminum or steel pipe the thruster sits in, bonded through the bow. BP250G10, BP250G15 (40 in, 60 in) $307–$831250 mm fiberglass tunnel tubes up to 60 in (1.5 m) long (VETUS, Sleipner Side-Power, Lewmar), at Fisheries Supply, read 16 October 2026.
Control panel The buttons or joystick at the helm. One helm, one panel: a second steering station needs a panel of its own. BPSE2 push buttons, BPJSTA joystick, BPJE2 or EZDOCK2 $219–$374Side-Power touch panel and single joystick, VETUS push-button panel, Lewmar single joystick, at Fisheries Supply.
Control cable, panel to motor The thin cable from the helm to the motor. Sold by length. VETUS panel cable, by length $29–$173Side-Power control cables, VETUS panel cables, Lewmar Gen 2 connecting cables, at Fisheries Supply.
Main fuse A slow-blow fuse of the ANL type at the battery, in the size the maker prints for the model. ZE series slow-blow, the rating in the yard table below $18–$57Side-Power ANL fuses, Blue Sea ANL fuses, at Fisheries Supply, read 16 October 2026.
Fuse holder The block the ANL fuse bolts into, with a cover. ZEHC100 $27–$93Egis and Blue Sea ANL fuse blocks, Side-Power ANL fuse holders, at Fisheries Supply, read 16 October 2026.
Main battery switch The switch that cuts the thruster off from its battery when you leave the boat. BATSW250 (BATSW600 on the bigger units), or BPMAIN12/24 for a remote switch $35–$107Egis m-Series 300 A, Blue Sea e-Series 350 A and HD-Series 600 A on/off switches, 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. VETUS names none 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. VETUS 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. VETUS names none $146–$305NOCO GEN5X2 shore charger, Victron Orion-Tr Smart DC-DC charger, Blue Sea ML-ACR charging relay, at Fisheries Supply.
Glass, resin, filler and sealant What bonds the tube or housing into the hull and seals the gear leg. VETUS names none Not priced

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 VETUS Bow 180, every published figure the site holds, with where each came from.
Thrust and motor
Thrust 397 lb (180 kgf) As printed: "Rated thrust : 1800 N (180 kgf, 405 lbf)" - VETUS manual 020588.01 r06 (2025-01) BOW180, Technical data
Motor7 kW
Voltage24 V
Fitting
TypeTunnel, fixed mount
End of the boatBow
Tunnel diameter250 mm
What it does to the hullTunnel bore below the waterline
Haul-out to fit itYes
Maker’s boat lengthNot published
Price and ordering
Price No US price published
Part number BOW18024D24 V
Documents
Manual Installation manual (PDF)on the maker's site
Warranty VETUS gives 3 years, or 1 for professional use, and it transfers to the next owner. Claims go through the dealer only. It is void unless an authorized VETUS dealer does the periodic maintenance, and transport, labor and lifting are excluded. VETUS's warranty policy
The site’s reviewVETUS thruster review

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 tunnel bore below the waterline.The mounting: a bore through the hull, or a housing recessed into it
  • VETUS 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 VETUS Bow 180, written from the maker’s manual, its product pages and the dealer’s listing.

In the box: The solenoid switches and the 5 A control fuse are on the motor. The panel, its cable, the main fuse and switch are bought.

Our note

A 24 V on/off unit in a 250 mm tunnel, between the Bow 160 and the Bow 220. The manual rates it at 180 kgf from a 7 kW motor drawing 400 A, four minutes at a time (S2), at 55 kg without the tunnel.

Videos

Two of VETUS’s own videos, from its YouTube channel: how VETUS picks a size, a battery bank and a panel, and the first of its service videos for a tunnel unit. 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.

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

Other sizes and close alternatives

VETUS also sells this thrust built another way. Each has its own page:

These are VETUS’s next sizes in the same line, by thrust.

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.