Navigational Equipment Flashcards
What equipment is associated with the Gyro Compass?
Gyro Compass
- Course and rudder recorder
- Satellite TV
- Inmarsat systems
- Autopilot
- Gyro Repeaters
- RoT indicators
- GPS
- X-band and S-band radars
- Voyage Data Recorders
- ECDIS
What vessels require AIS and can it be switched off?
AIS (Automated Identification System)
All passenger ships, vessels over 300gt on international voyages, and cargo over 500gt not on international voyages are all required to have AIS.
The AIS may be switched off if the Master believes it may compromise security. If this occurs in a mandatory reporting system, the Master should report this action and the reason to the competent authority. AIS should be restored as soon as it is safe to do so.
What is the Static, Dynamic, and Voyage Data of the AIS?
AIS Data
Static – MMSI number, call sign and name, IMO number, length and beam, type of ship, location of position fixing antenna.
Dynamic – Ship’s position and accuracy of fix, position time stamp in UTC, course over ground, speed over ground, heading, nav status, rate of turn
Voyage Date – Ship’s draught, hazardous cargo (type), persons on board, destination and ETA, route plan (waypoints)
What are the two types of radar used on vessels?
X – band
Better for short range. Receives SART signals.
9GHz – 3cm
S – band
Better for long range and poor weather
3GHz – 10cm
