Tokyo Keiki Pr-9000; Summary Of Steering Modes - Furuno FMD-3200 Operator's Manual

26. AUTOPILOT OPERATIONS
26.3.3

TOKYO KEIKI PR-9000

The PR-9000 receives position, heading and speed data, compares them with the
track section to be steered, and applies that information to calculate and command the
necessary rudder angle.
Hand (manual) steering mode
Manual steering by UID (User Input Device). While in a hand steering mode, the
ECDIS indicates the rudder angle and the hand steering mode.
Automatic steering modes (TC, HC)
The autopilot steering modes are selected from the HCU.
• HC mode: Automatic steering by heading control, heading set with the Heading
knob.
• TC mode: Automatic steering by track control. Control the ship so that it follows a
straight leg straightly or the curve in a curved leg.
26.3.4 YOKOGAWA PT-900
• Manual mode (Hand mode): Same as "Hand (manual) steering mode" above.
• Automatic steering mode (Auto mode): Same as "HC mode" above.
• NAV steering mode (Auto mode): Same as "TC mode" above.
26.3.5

Summary of steering modes

Route steering modes (all autopilots)
Set course
Set radius
Radius control
Design before execution
Wind, current, etc. compensation running straights between WPT
Wind, current, etc. compensation in turns
Needs a gyrocompass
Needs a log
Precision of position-fixing equipment
Needs direct SOG/COG sensor
Note: The YOKOGAWA PT-900 has only the GoAW mode.
26-16
Item
Mode
GoSEA GoAW
Automatic Automatic
Automatic Automatic
Yes Yes
Yes Yes
Low gain High gain
Yes Yes
Yes Yes
Yes Yes
Good(GPS) High(GPS)
No No