Collision Avoidance Maneuver In Route Steering; Steering Performance; Expected Steering Performance For Going Ahead - Furuno FMD-3200 Operator's Manual

24.7.2

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:
• Use the Non-Follow-Up steering lever to control rudder pumps.
• Use the Override steering.
• Use the Follow-Up rudder control. (Change mode from NAVI to HAND.)
• Use the local Autopilot Heading control. (Change mode from NAVI to AUTO.)
24.8

Steering Performance

Below is a summary of how different environmental conditions change steering per-
formance.
24.8.1

Expected steering performance for going ahead

Environmental Heading control=
conditions
Calm sea, no COG is approx. the
wind, no current same as Set
Course in Autopilot.
Moderate wind Ship has a tenden-
and/or current cy to drift.
High wind and/or Ship is drifting.
current
Wind and/or cur- There is no com-
rent changes pensation for
slowly. change.
Sudden change There is no com-
of wind and/or pensation for
current (For ex-
change.
ample sudden
change from no
current to 5 kn
current perpen-
dicular to track)
Fast change of Ship does normal
speed (For exam- Autopilot turn under
ple, speed de- this condition.
creased from 20
to 7 kn)
* The Track Control System can compensate drift up to 45 degrees. If the drift is larger,
your ship may go outside the channel limit.
GoSEA+NAVI
AUTO
Ship follows monitored
route.
Ship follows monitored
route.
1) Ship follows monitored
route.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Ship follows monitored
route, but may need full
channel limit area.
1) Ship follows monitored
route.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Ship follows monitored
route, but may need full
channel limit area.
24. OPERATION WITH AUTOPILOT PT-500A
Ship follows monitored
route.
Ship follows monitored
route.
1) Ship follows monitored
route.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Ship follows monitored
route.
1) Ship may go outside
channel limit and return
back inside channel limit.*
2) Ship can have a problem
following monitored route
inside the channel limit.
Ship follows monitored
route, but may need full
channel limit area.
GoAW+NAVI
24-13