Raymarine · Autopilot

Raymarine EV-100

The Evolution EV-100 is the smallest of Raymarine’s Evolution autopilots, made for small and mid-size boats. Every version is built on the same two units — the EV-1 sensor core, a 9-axis heading and motion sensor, and the ACU-100 actuator control unit — linked with the control head over SeaTalkng / NMEA 2000, so this page covers all three packs and their parts: EV-100 Wheel (Mk II wheel drive, wheel-steered sailing boats up to 7,500 kg), EV-100 Tiller (cockpit tiller drive, tiller boats up to 6,000 kg) and EV-100 Power (Type 0.5 hydraulic pump, 50–110 cc hydraulic steering), with the p70s push-button head in the sail packs and the p70Rs rotary head in the power pack. Raymarine rates the wheel and tiller drives for coastal sailing; the larger EV-150 to EV-400 systems use the same EV-1 with bigger control units and drives. The EV-100 runs on 12 V only and calibrates its compass by itself under way, so there is no separate fluxgate compass to fit and no manual compass swing.

Manuals & documents

The links go straight to Raymarine. We host no manuals or drawings — the manufacturer’s copy is the current one.

Wear parts & part numbers

PartOEM numberAlso fitsNote
Control unitE700981,2—ACU-100 actuator control unit, the same in all three packs; comes with a 1 m SeaTalkng-to-bare-wires cable. Runs 7 A drives only: Mk II wheel drive, cockpit tiller drive, Type 0.5 pump. A rudder reference sensor (M81105) is optional and recommended by Raymarine; without it the hard-over time is set by hand.
Autopilot control headE70328 · E703293,4,5,2,6replaces E22166replaces E22167—Control heads: p70s with push buttons (E70328, in the Wheel and Tiller packs) and p70Rs with rotary knob (E70329, in the Power pack). They replace the p70 (E22166) and p70R (E22167), which also run Evolution with software v2.11 or later. Suncovers: A80357 for the p70s, A80358 for the p70Rs; bezels A80353 (black) and A80354 (gunmetal).
Drive unit (motor, ram)E120937,2—Mk II wheel drive with installation kit, 12 V, for the EV-100 Wheel: wheels with 3 to 8 spokes, steering with 1 to 3.5 turns lock to lock, boats up to 7,500 kg. A clutch lever frees the wheel for hand steering.
Drive unit (motor, ram)A80737 · Q0478,9,2,10—Cockpit tiller drive, 12 V, for the EV-100 Tiller, boats up to 6,000 kg. A80737 is the current number, sold with the installation kit; Raymarine’s Evolution manual 87180 lists the bare drive as Q047.
Pump assemblyE1213911,2,12—Type 0.5 hydraulic pump, 12 V, for the EV-100 Power: steering cylinders of 50 to 110 cc. It is the only pump the ACU-100 can drive; the Type 1 pump (M81120) needs an ACU-150 or ACU-200.
Heading sensor (sensor core)E7009613,2,14—EV-1 sensor core: the 9-axis heading and motion sensor (compass, gyro, accelerometer) that every Evolution system from EV-100 to EV-400 uses. Supplied with mounting tray, two sealing rings, wall bracket and a 1 m SeaTalkng spur cable.
Seal setR7016114,2—Pack of the two sealing rings (O-rings) under the EV-1, also for the EV-2.
Mounting bracketR70162 · A8043714,2—R70162 wall bracket for the EV-1/EV-2. A80437 deck mounting kit (clamshell adaptor, riser, fixings, sealing rings, wall bracket) for an EV-1 on deck or on a pod.
CableR701602,14,15—Evolution cabling kit, included in the packs: 5 m backbone cable (A06036), 1 m spur cable, 2 m power cable (A06049), 5-way connector block (A06064), two T-pieces (A06028), two terminators (A06031).
CableA06049 · A0607014,2—SeaTalkng power cable 2 m; A06070 is the right-angled version. Needs a 5 A inline fuse.
CableA06033 · A06034 · A06035 · A06036 · A06068 · A0603714,2—SeaTalkng backbone cables: 0.4 m A06033, 1 m A06034, 3 m A06035, 5 m A06036 (the one in the cabling kit), 9 m A06068, 20 m A06037.
CableA06038 · A06039 · A06040 · A06041 · A06042 · A0608114,2—SeaTalkng spur cables from the backbone to EV-1, ACU-100 and head: 0.4 m A06038, 1 m A06039, 3 m A06040, 5 m A06041; elbow-to-elbow 0.4 m A06042; elbow-to-straight 1 m A06081. In a tight riser the EV-1 may need A06081 or the elbow adaptor A06077.
Network connector (T-piece, terminator)A06028 · A06064 · A06031 · A0603214,2—SeaTalkng connectors rather than cables: T-piece A06028 (one device each), 5-way connector block A06064 (up to three spur devices), terminator A06031 (one at each end of the backbone), blanking plug A06032 for unused spur sockets.
CableA06045 · A06075 · A06074 · A0607614,2—SeaTalkng to DeviceNet adaptor cables, to join the EV-100 to a third-party NMEA 2000 network: female 0.4 m A06045 and 1 m A06075, male 0.4 m A06074 and 1 m A06076.
CableE2215814,2—SeaTalk 1 to SeaTalkng converter kit, for older SeaTalk instruments and control heads such as the ST60 (limited functions).

Numbers checked against the sources below on 12 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

TaskInterval
Full serviceNone scheduled: EV-1, ACU-100 and control head have no user-serviceable parts; repairs only through Raymarine dealers. Clean with the power off and a damp cloth only, no solvents, acids, ammonia or pressure washer2
Electrical connectionsRegularly (Raymarine gives no hours or months): inspect all cables for chafe and damage and check that every connector is secure14
CalibrationBefore commissioning and after swapping any unit: update EV-1, ACU and head to the latest Raymarine software. The compass calibrates itself after the first switch-on, a factory reset or a compass restart: turn the boat through at least 270° at 3–15 kn, then check the deviation in the diagnostics menu — 45° or more means the EV-1 must be moved5,16

From Raymarine’s installation instructions (87180, 87472), the p70s/p70Rs operation instructions (81402) and the commissioning sheet 82285. Raymarine sets no maintenance schedule in hours or months for the EV-100.

Specifications

TypeEV-1 sensor core (3-axis compass, 3-axis gyro, 3-axis accelerometer) + ACU-100 actuator control unit + control head + drive, networked over SeaTalkng / NMEA 200013
ModelsEV-100 Wheel T70152 (without head T70248, without head and drive T70281); EV-100 Tiller T70153 (without head T70249); EV-100 Power T70154 (without head T70250)17,18,19
Max boat displacementEV-100 Wheel: wheel-steered sailing boats up to 7500 kg (16500 lb); EV-100 Tiller: tiller-steered sailing boats up to 6000 kg (13200 lb); EV-100 Power: hydraulic steering with 50–110 cc (3.1–6.7 cu in) cylinders. Add 20 % to the bare displacement for fuel, gear and crew17,18,19
Controlp70s (E70328) and p70Rs (E70329); p70 (E22166) and p70R (E22167) with software v2.11 or later; ST70/ST70+; LightHouse 2, 3 and 4 chartplotters (Axiom and others); SeaTalk 1 heads through a converter, with limited functions2
Voltage12 V DC nominal, 10.8–15.6 V operating range; every EV-100 version is 12 V only. p70s/p70Rs: 9–16 V via SeaTalkng1,3
Current drawACU-100 standby 300 mA, drive output up to 7 A continuous; EV-1 30 mA (LEN 1); p70s/p70Rs 131 mA, 1.57 W (LEN 3)2
Breaker / fuseACU-100 supply: 10 A inline fuse or 10 A thermal breaker; inside the ACU a 10 A blade fuse, with spares under the removable cover. SeaTalkng power cable: 5 A inline fuse or 3 A thermal breaker2
MountingEV-1 above or below deck, on a horizontal surface (upright or upside down) level within 5° in pitch and roll, or on a bulkhead with the bracket; LED arrow to the bow; at least 1 m from compasses and power cables; deck kit A80437 for exposed spots. ACU-100: connector panel only IPx2 (electronics IPx6), so mount it dry and protected; EV-1 and p70s/p70Rs are IPx6 and IPx714,1,13
DimensionsACU-100 180 × 140 × 52 mm; EV-1 Ø 140 mm, 35 mm deep (95 mm with wall bracket); p70s/p70Rs 110 × 115 mm, 151.65 mm deep including the cable bend1,13,3
WeightACU-100 0.6 kg; EV-1 0.29 kg1,13

Good to know

  • Size by laden weight: add 20 % to the bare displacement for fuel, water, gear and crew, and stay within 7,500 kg for the Wheel and 6,000 kg for the Tiller pack. Raymarine rates these drives for coastal sailing; for offshore passages it advises a bigger drive with capacity to spare and a backup way to steer.2,17,18
  • The ACU-100 needs its own fused 12 V feed (10 A fuse or breaker) plus a drain wire to the RF ground, and the SeaTalkng backbone its own power cable with a 5 A inline fuse. When the pilot goes dead, check the ACU’s internal 10 A blade fuse first — spares sit under its removable cover.2
  • Keep the battery-to-ACU and ACU-to-drive runs short and heavy (combined length, 12 V). Wheel drive and Type 0.5 pump: 2.5 mm² up to 3 m, 4 mm² up to 5 m, 6 mm² up to 7 m, 10 mm² up to 10 m, 16 mm² up to 16 m. Tiller drive: 1.0 mm² up to 2.5 m, 1.5 mm² up to 4 m, 2.5 mm² up to 6 m. Thin wire shows up as weak steering and stall alarms.2
  • Commission in this order: vessel hull type, the dockside wizard (drive type, rudder limit, rudder drive check), the hard-over time (only without a rudder reference sensor), then the compass calibration under way — a turn of at least 270° at 3–15 kn, no input needed. Check the deviation afterwards: 45° or more means the EV-1 has to move.16
  • If the pilot hunts, raise the rudder damping one step at a time in the drive settings of the autopilot calibration; newer ACUs (part number ending in A, software v3.11 or later) use a wider scale, so values from an older unit may not match. ‘DRIVE STOPPED’ or ‘STALL DETECTED’ usually means too much helm load for the 7 A drive or a wrong hard-over time; ‘MOTOR POWER SWAPPED’ means motor and supply wires are on the wrong ACU terminals.2
  • Buying used: the EV-1 and ACU-100 are identical in every EV-100 pack, so a Wheel pack becomes a tiller pilot by changing only the drive, and an older p70 or p70R head works once updated to software v2.11 or later. Check that the EV-1’s two sealing rings (R70161) and wall bracket (R70162) come with it — they are sold separately.2

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Sources

  1. raymarine.com/en-us/our-products/boat-autopilots/autopilot-acu/acu-100
  2. teledyne.app.box.com/index.php?rm=box_download_shared_file&shared_name=rvhycb6x1brzo64921…
  3. raymarine.com/en-us/our-products/boat-autopilots/autopilot-control-heads/p70s
  4. raymarine.com/en-us/our-products/boat-autopilots/autopilot-control-heads/p70rs
  5. docs.raymarine.com/81402/en-US/latest/81402%20%28Rev%206%29%20%28en-US%29.pdf
  6. docs.raymarine.com/87424/en-US/latest/87424%20%28Rev%203%29%20%28en-US%29.pdf
  7. raymarine.com/en-us/our-products/boat-autopilots/autopilot-drive-units/cockpit-mk-ii-whee…
  8. raymarine.com/en-us/our-products/boat-autopilots/autopilot-drive-units/cockpit-tiller-dri…
  9. bluebottlemarine.com/products/raymarine-ev100-tiller-drive-including-installation-kit.html
  10. defender.ca/en_ca/raymarine-ev-100-autopilot-tiller-drive-q047
  11. raymarine.com/en-us/our-products/boat-autopilots/autopilot-drive-units/type-0-5-hydraulic…
  12. raymarine.com/en-us/our-products/boat-autopilots/autopilot-drive-units/type-1-hydraulic-p…
  13. raymarine.com/en-us/our-products/boat-autopilots/autopilot-sensor/ev-1-sensor-core
  14. docs.raymarine.com/87472/en-US/latest/87472%20%28Rev%202%29%20%28en-US%29.pdf
  15. thegpsstore.com/Raymarine-EV100-Wheel-Pilot-P4115.aspx
  16. teledyne.app.box.com/index.php?rm=box_download_shared_file&shared_name=rvhycb6x1brzo64921…
  17. raymarine.com/en-us/our-products/boat-autopilots/autopilot-packs/ev-100-wheel-pilot
  18. raymarine.com/en-us/our-products/boat-autopilots/autopilot-packs/ev-100-tiller-pilot
  19. raymarine.com/en-us/our-products/boat-autopilots/autopilot-packs/ev-100-power-pilot

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