Furuno FEA-2100 - Mode Goto Waypoint; Mode Goto Track; Summary of Route Steering Modes

368 •
••
• Steering with EMRI Trackpilot
Mode Goto Waypoint
• mode selection GO TO WAYPOINT. Lamps GO TO WAYPOINT and ROUTE are on
• tiller can be used to set radius, but not course which is set automatically
• steering is course controlled with set radius
• between waypoints, if wind, current etc. effects the ship, the system tries to prevent the ship from drifting away
from planned route. The system has three means to prevent drifting away from the planned route. They are
most effective when used together. If cross track error is used alone, then the own ship stabilises typically in a
constant off track position. The means are:
• measured cross track error from the center line, which is always active
• Drift compensation available from Route Parameters
• Gyro error compensation available from Route Parameters
• during turns, if wind, current etc. effects the ship, the ship will drift away (inside or outside) from planned
designed turn which is displayed on radar screen
• can be used when the ship has good position source available
Mode Goto Track
• mode selection GO TO TRACK. Lamps GO TO TRACK and ROUTE are on
• tiller can be used to set radius, but not course which is set automatically
• steering is track controlled with set radius
• when wind, current etc. effects the ship, the system tries to prevent the ship from drifting away from planned
route. The system has three means to prevent drifting away from the planned route. They are most effective
when used together although the cross track error alone is also very efficient. The means are:
• measured cross track error from the center line, which is always active
• Drift compensation available from Route Parameters
• Gyro error compensation available from Route Parameters
• can be used when the ship has high precision position source available
Summary of Route Steering modes
GO TO WAYPOINT GO TO TRACK
Set course
Set radius
Radius control
Dynamic waypoint position
Design before execution
Full curved EBL on radar screen
Wind, current etc. compensation in linear parts between wp.
Wind, current etc. compensation in turns
automatic
automatic / manual
yes
yes
yes
yes
low gain
no
automatic
automatic / manual
yes
yes
yes
yes
high gain
yes
Needs gyro
Needs log
Precision of position equipment
yes
yes
good
1
yes
yes
high
2
1
Precision of position is good with LORAN and GPS.
2
Precision of position is high with DGPS and SYLEDIS