Manual Simrad AP80 Autopilot (page 66 of 72) (English)

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System conguration | AP70/AP80 Operator Manual

¼ Note: Make sure that both the compass heading and the bearing to the object have the

same unit (Magnetic or True).

Drive conguration

The drive setup can usually be done while at dock, and only minor adjustments may be

required at seatrial.

Refer “Dockside - Drive system” on page 58.

Boat settings

These settings are used as initial values for the vessel. Each of them can be changed in the

diﬀerent work proﬁle settings.

Turn type and Turn value

Used for selecting how you want to control the vessel’s turn: either by deﬁning the Rate of

Turn (Rate) or the radius.

• Rate range: 5°/minute - 720°/minute

• Radius range: 10 (m) - 10 (NM)

- The minimum radius can however never be less than the value corresponding to a Rate of

Turn = 720°/minute at the set Cruising speed

• Default: Rate

• Initial value: Determined during sea trial

Track approach angle

Deﬁnes the angle used when the vessel is approaching a leg.

This setting is used both when you start navigating and when you use track oﬀset.

• Range: 5° - 60°

• Default: 30°

Tuning the autopilot for optimum steering performance

Providing you have entered correct vessel type, length and cruising speed, you may not have

to perform further manual- or automatic tuning. Refer “Vessel conﬁguration” on page 63.

¼ Notes:

• If steering compass is magnetic type, perform any autopilot tuning steering East or West, as

this will yield the best-balanced parameters

• The speed during tuning should be as close as possible to cruising speed. Ensure that this is

set correctly and as described in “Vessel conﬁguration” on page 63

• Active work proﬁle that should be used during seatrial depends on vessel type.

- For displacement boats NORMAL work proﬁle should be used

- Planing boats will have to tune both LO SPD and HI SPD work proﬁles

• All tuning should always be performed in open waters at a safe distance from other traﬃc

Initial automatic learning process

Before doing any manual or automatic tuning the autopilot needs to learn the turn

characteristic of the boat. This is done in AUTO mode by making a major course change (min

90°) to port and starboard. For this test you may use the U-turn function (180°).

The autopilot will now ﬁnd the appropriate amount of rudder to maintain the set turn rate

during the turn. See also “Turn type and Turn value” on page 66.

When the automatic learning process is done, now proceed as follows to verify satisfactorily

steering:

1. Stabilize the vessel on a heading, and then select AUTO mode

2. Observe course keeping and rudder commands

- The autopilot should keep the vessel on the set heading within an average of +/-1 degree,

providing calm sea and wind

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Others manual(s) of Simrad AP80 Autopilot

Simrad AP80 Autopilot Additional guide - English - 18 pages

Simrad AP80 Autopilot Quick start guide - English - 6 pages

Simrad AP80 Autopilot User Manual - English - 84 pages

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Simrad AP80 Autopilot Manual

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