- A.Conspicuous
- B.Permanent
- C.Preliminary
- D.Temporary
- A.Developed low
- B.Developing low
- C.Being developed low
- D.Low to be developed
- A.Great Circle
- B.Position Line
- C.Rhumb Line
- D.True Bearing
- A.UNIT
- B.CONTAINER
- C.VEHICLE
- D.CLOSED TYPE UNIT
- A.dead reckoning
- B.dead weight
- C.dead slow ahead
- D.dead slow astern
- A.Should / will be postponed
- B.If / shall be postponed
- C.Should / would be postponed
- D.If / has to be postponed
- A.Amendments to Admiralty Sailing Directions
- B.Amendments to Admiralty List of Lights and Fog Signals
- C.Amendments to Admiralty List of Radio Signals
- D.Supplement to Guide to Port Entry
- A.Smoke signal
- B.Flash signal
- C.Fire signal
- D.Radio emergency transmission
- A.Biodegradation
- B.Dissolution
- C.Cleaning up by crew with skimmers
- D.Oxidation including photooxidation
- A.Evaporation
- B.Dispersion
- C.Emulsification
- D.Drifting