Operator's Manual

26. AUTOPILOT OPERATIONS
26-24
26.8.2 Collision avoidance maneuver in route steering
Route steering is often interrupted by a collision avoidance maneuver, but there are
also several other reasons to interrupt route steering. There are several possibilities
to set the collision avoidance or any other maneuver:
26.9 Steering Performance
Below is a summary of how different environmental conditions change steering per-
formance.
26.9.1 Expected steering performance for going ahead
• Use the Non-Follow-Up steering lever to directly control rudder pumps.
• Use the Override steering.
• Use the Follow-Up rudder control. (Change mode from NAVI
*1
to HAND.)
• Use the local Autopilot Heading control. (Change mode from NAVI
*1
to AUTO*
2
)
*1
REMOTE CONTROL on FAP-3000
*2
HEADING CONTROL on FAP-3000
Environmental
conditions
Heading control=
AUTO
Mode
GoSea (FAP-2000/3000)
GoSea+RC (PR-6000)
GoSea+NAVI (PT-500A)
GoAW (FAP-2000/3000)
GoAW+RC (PR-6000)
GoAW+NAVI (PT-500A)
Calm sea, no
wind, no current
COG is approx. the
same as Set
Course in Autopilot.
Ship follows monitored
route.
Ship follows monitored
route accurately.
Moderate wind
and/or current
Ship has a tenden-
cy to drift.
Ship follows monitored
route.
Ship follows monitored
route accurately.
High wind and/or
current
Ship is drifting. 1) Ship follows monitored
route but may go outside
channel limit area.*
2) Ship may have a prob-
lem following monitored
route inside the channel
limit, however.
1) Ship follows monitored
route.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Wind and/or cur-
rent changes
slowly.
There is no com-
pensation for
change.
Ship follows monitored
route.
Ship follows monitored
route accurately.
Sudden change
of wind and/or
current (For ex-
ample sudden
change from no
current to 5 kn
current perpen-
dicular to track)
There is no com-
pensation for
change.
1) Ship may go outside
channel limit but is “re-
turned” to center of chan-
nel.*
2) Ship can have a problem
following monitored route
inside the channel limit.
1) Ship is kept within chan-
nel limit.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Fast change of
speed (For exam-
ple, speed de-
creased from 20
to 7 kn)
There is no com-
pensation for
change.
Ship follows monitored
route, but may need full
channel limit area.
Ship follows monitored
route, but may need full
channel limit area.