07 - Basic Plotting Flashcards
1
Q
Track
A
The intended horizontal direction of travel with respect to the earth
- Combinatino of intended course and speed
2
Q
Speed of Advance (SOA)
A
The intended speed to be made along your track
3
Q
Course Over Ground (COG)
A
Actual course of the vessel over the surface at a given value
4
Q
Speed Over Ground (SOG)
A
Actual speed of the vessel over the surface of the earth at a given value
5
Q
Current Triangle
A
Set - Direction of current
Drift - Speed of current
6
Q
Offsetting influences
A
Current ⇒ Resultant of all offsetting influences
- Tidal Current
- Winds
- Effects of the wind on the ship
- Heavy seas
- Inaccurate steering
- Error in engine calibration
