7 - Risk of Collision

Question 1

Risk of Collision

Inland & International

Answer 1

Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists.

Question 2

RADAR equipment

Answer 2

Must be fitted and operational

Includes long-range scanning to obtain early warning of risk of collision and radar plotting

Question 3

Assumptions of Collisions

Answer 3

Shall NOT be made on the basis of scanty information, especially scanty RADAR information

Question 4

In determining if risk of collision exists, the following considerations shall be among those taken into account:

Answer 4

1. Risk exists if the compass bearing of an approaching vessel does not appreciably change
   - Constant Bearing, Decreasing Range
2. Risk may exist even if appreciable bearing is evident, particularly when approaching a very large vessel or tow at close range

Question 5

Bearing Drift

Answer 5

Bearing Drift is determined by how it looks to YOU

i.e. if you see a vessel drifting left, it is Left Bearing Drift