Expected Steering Performance Under Various Conditions; Expected Steering Performance For Going Ahead - Furuno FEA-2107-BB Operator's Manual

30. Steering With TOKYO KEIKI Autopilot PR-6000
30.8 Expected Steering Performance Under Various
Conditions
The system has many available steering modes. Below is a summary of effect of various environmental conditions.
Note 1:
Track Control System use a combination of drift compensation and off track compensation to keep your ship inside
the channel limit. During a turn and after a turn for first 4 minutes this Track Control System uses drift
compensation based on the drift situation before the turn. If drift situation changes a lot during the turn (current or
wind) then vessel may sail outside the channel if the off track compensation cannot compensate the non-ideal drift
compensation decided before the turn.
30.8.1

Expected steering performance for going ahead

Environmental Heading control
conditions = "AUTO"
Calm sea, no COG is about the
wind, no current same as Set
Course in
Autopilot.
Moderate wind Ship has at
and/or current tendency to drift.
High wind and/or Ship is drifting.
current
Wind and/or There is no
current changes compensation for
slowly. change
*) The track control system is able to compensate drift up to 45 degrees. If drift is larger, your ship may go outside
channel limit.
**) The track control system is able to compensate cross-track error up to 30 degrees. However, the full
compensation is not available immediately. Two alarms will warn the operator if the track control system estimates
that it is not able to keep your ship within the channel limits. Alarm "2519 Trackpilot: XTE comp. limit" informs
you that the no further cross-track error based compensation is possible. Alarm "2455 Route: Off course" informs
you that the track control system cannot use a higher attack angle towards the track.
30-24
Goto OS + "RC"
- Ship follows monitored route.
- Ship follows monitored route.
- Ship follows monitored route*).
- Ship may have trouble following
monitored route inside the channel
limit.**).
- Ship follows monitored route, but
may need full channel limit area.
Goto AW+ "RC"
- Ship follows monitored route.
- Ship follows monitored route.
- Ship follows monitored
route*).
- Ship may have trouble
following monitored route
inside the channel limit.**).
- Ship follows monitored route.