Autopilots by boat type
Autopilots for displacement motor cruisers
Compare autopilots for displacement motor cruisers and trawlers. Review drive interfaces, compass choices, electrical supply and long-range cruising needs.
- Steering
- Hydraulic, often with power steering or solenoid control
- Displacement
- 10,000–60,000 kg
- Recommended
- 4 systems
- Examples
- Grand Banks, Fleming, Nordhavn
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 more than sailing modes or fishing patterns. Many of these boats are steel or alloy, which pushes the heading sensor towards a , and some are in commercial survey, which brings the and a surveyor into the conversation.
Furuno's NavPilot 711C is the archetype here, alongside Raymarine's EV-400 with a large pump or solenoid interface, Garmin's Reactor 40 with a 2.0 L pump, and Simrad's NAC-3 with a solenoid pack.
Heading sources on steel and alloy boats
A magnetic sensor on a steel boat is a compromise however carefully it is placed. A (Furuno SC series and equivalents) gives a heading independent of the hull's magnetism, which also improves radar overlay and AIS. On a long-range cruiser it is money well spent.
Pumps, solenoids and power steering
Larger vessels often have a constant-running hydraulic pump and power-assisted steering. The autopilot then controls a solenoid valve block rather than driving its own pump. Raymarine's ACU-300/400, Simrad's NAC-3 and Furuno's 711C all support solenoid control; the installer configures the system to the steering gear.
- 24 V course computer and pump or solenoid interface
- Satellite compass on steel and alloy hulls
- Rudder reference with a robust linkage
- Second control head in the wheelhouse and on the flybridge
- Watch alarm and off-course alarm configured
Long-range cruising in Australian waters
The classic routes, up the east coast inside the Reef, across the Gulf to Darwin and on to the Kimberley, involve strong tidal streams, long legs and few services. or track modes handle the set; a keeps radar overlay honest; spares for the pump and control head go in the ship's stores. Autopilot instruction for the crew, including deckhands who will stand watches, is part of the preparation.
Commercial survey
Recommended
Systems that suit displacement motor cruisers and trawlers
Built for this: 24 V, satellite compass option, commercial menus and long service life.
With a large pump or solenoid interface, the Raymarine answer for heavy cruisers.
With a 2.0 L pump for Garmin-equipped cruisers to about 18 m.
NAC-3 with AP48 and a solenoid pack for larger Simrad-networked vessels.
- Magnetic sensors mounted near steel bulkheads
- 12 V pilots on 24 V boats through converters
- Single control head on a multi-station vessel
Questions
Frequently asked
Do I need a satellite compass?
On a steel or alloy hull, or any boat where heading stability matters for radar overlay, yes. On a fibreglass cruiser a well-placed nine-axis sensor is usually adequate.
Is a Furuno pilot hard to use for a recreational owner?
Its menus are functional rather than glossy, but the daily operation is simple: engage, adjust heading, standby. A handover session and a laminated card at the helm cover it.
Recommended systems at a glance
- Below-deck systemFuruno
Furuno NavPilot 711C
- Indicative
- $4,500–$6,800
- Editor score
- 73
- Below-deck systemRaymarine
Raymarine Evolution EV-400
- Indicative
- $8,500–$14,000
- Editor score
- 77
- Below-deck systemGarmin
Garmin Reactor 40 (Hydraulic, Mechanical, Steer-by-wire and Sail)
- Indicative
- $2,900–$5,200
- Editor score
- 83
- Below-deck systemSimrad
Simrad AP44 with NAC-2 or NAC-3
- Indicative
- $3,300–$5,800
- Editor score
- 77
Where these boats sail
Other boat types
Autopilot commissioning and boat-specific training
Every boat type above ends with the same advice: a handover on the water, a settings card, alarms set and a failure drill. The training section explains what good instruction looks like and where to find it.