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Marine Autopilot

By boat type

Autopilots by boat type

Seven guides, each with Australian examples, the steering and displacement that define the type, sizing rules, recommended systems, what to avoid and an instructor's note.

1,000–7,000 kg

Tiller-steered yachts

Tiller

Tiller boats are the easiest yachts to fit an autopilot to and the easiest to get wrong. A cockpit tiller pilot goes on in an afternoon and, on flat water, makes a tiller boat…

Examples: Adams 10, Cavalier 28 and 32, Farr 9.2 and Farr 1020, Elliott 7 and 780

5,000–15,000 kg

Wheel-steered cruising yachts

Mechanical wheel (cable, chain or rod); some hydraulic

This is the biggest single group of yachts in Australia: the 34–46 foot production cruisers that fill marinas from Pittwater to Manly to Fremantle, most of them ex-charter or…

Examples: Beneteau Oceanis 35–46, Jeanneau Sun Odyssey 349–440, Bavaria Cruiser 37–46, Hanse 385–458

6,000–20,000 kg

Catamarans and multihulls

Twin rudders linked by a tie bar; mechanical or hydraulic helm

Australia builds and sails more cruising catamarans per head than almost anywhere, and the autopilot conversation on a cat is different. Two rudders, a tie bar, often a hydraulic…

Examples: Seawind 1160, 1260 and 1370, Lightwave 38 and 45, Lagoon 40–450, Fountaine Pajot Lucia to Saona

800–4,000 kg

Trailer boats and outboards

Hydraulic outboard steering; cable steering on smaller boats

Australia's trailer-boat fleet is enormous and the autopilot market for it has matured fast. Ten years ago an autopilot on a 6 m plate boat was exotic; now the Garmin Reactor 40…

Examples: Bar Crusher, Stabicraft, Quintrex and Stacer, Haines Hunter

6,000–35,000 kg

Planing power cruisers

Hydraulic; some power-assisted or steer-by-wire

Planing cruisers and sportsfishers run hydraulic steering almost without exception, which makes the autopilot choice about pump size, voltage and integration rather than drive…

Examples: Riviera 39–52, Maritimo M50–M64, Caribbean 35–50, Whittley CR

10,000–60,000 kg

Displacement motor cruisers and trawlers

Hydraulic, often with power steering or solenoid control

Displacement cruisers run for days at 7–9 knots and the autopilot steers almost all of it. Reliability, a stable heading source and the ability to run on 24 V for a week matter…

Examples: Grand Banks, Fleming, Nordhavn, Clipper Motor Yachts

3,000–9,000 kg

Shorthanded racing yachts

Tiller or wheel; twin rudders common

The two-handed division of the Sydney Hobart and the growth of shorthanded racing in every Australian state have made the autopilot a performance system rather than a convenience.…

Examples: Jeanneau Sun Fast 3200, 3300 and 3600, J/99 and J/111, Beneteau First 36 and Figaro 3, Sydney 36cr

Sizing

Rated displacement by system

Manufacturer displacement ratings for the systems that publish one. Systems sized by pump or drive (Garmin, B&G, Simrad, Furuno) are chosen per boat and are not shown.

Maximum rated displacement, tonnesEach bar runs from zero to the manufacturer's stated maximum. Use loaded displacement with margin for following seas.
0 t5 t10 t15 t20 t25 t30 t35 tRaymarine ST2000+ Tiller PilotRaymarine ST2000+ Tiller Pilot: 0 t to 4.5 t0 t–4.5 tPelagic AutopilotPelagic Autopilot: 0 t to 7 t0 t–7 tRaymarine Evolution EV-100Raymarine Evolution EV-100: 0 t to 7.5 t0 t–7.5 tRaymarine Evolution EV-200Raymarine Evolution EV-200: 0 t to 11 t0 t–11 tRaymarine Evolution EV-150 HydraulicRaymarine Evolution EV-150 Hydraulic: 0 t to 12 t0 t–12 tCPT AutopilotCPT Autopilot: 0 t to 14 t0 t–14 tHydrovane Windvane Self-SteeringHydrovane Windvane Self-Steering: 0 t to 25 t0 t–25 tWindpilot PacificWindpilot Pacific: 0 t to 30 t0 t–30 tRaymarine Evolution EV-400Raymarine Evolution EV-400: 0 t to 35 t0 t–35 t
  • Tiller pilot
  • Wheel pilot
  • Below-deck
  • Windvane
View as a table
Manufacturer ratings; confirm for your exact model and drive.
ItemLowHigh
Raymarine ST2000+ Tiller Pilot0 t4.5 t
Pelagic Autopilot0 t7 t
Raymarine Evolution EV-1000 t7.5 t
Raymarine Evolution EV-2000 t11 t
Raymarine Evolution EV-150 Hydraulic0 t12 t
CPT Autopilot0 t14 t
Hydrovane Windvane Self-Steering0 t25 t
Windpilot Pacific0 t30 t
Raymarine Evolution EV-4000 t35 t

Frequently asked

How do I know my boat's loaded displacement?

Start with the builder's light displacement, then add tanks, gear, crew and stores. On a 40-foot cruiser that is typically one to two tonnes. Size the drive for that figure with margin.

My boat does not fit one type neatly. Which guide should I read?

Read the one that matches the steering system first, then the one that matches the use. A tiller-steered boat that races shorthanded should read both the tiller and the racing guides.