And if the tanker was in a narrow channel - this rule applies.....

9. Narrow channels
A vessel proceeding along a narrow channel must keep to starboard.
Small vessels or sailing vessels must not impede (larger) vessels which can navigate only within a narrow channel.
Ships must not cross a channel if to do so would impede another vessel which can navigate only within that channel.

Posted By: Kirrie, Aug 8, 13:07:22