Tidal heightsWorking out the height of
tide for entering ports, crossing shallows
and avoiding grounding:
using the tidal height tables, allowing for springs and neap tides; basic secondary port calculations, allowing for time differences.
collision regulations: collision avoidance;
the correct lights to use; how to identify types of vessels from their lights; how to recognise a vessel by its day shapes, and what day shapes to use for various situations;
sound signals and their uses.
Electronic navigationUsing onboard electronic equipment: chart plotters; depth
/ wind instruments and more.