Never hurts to throw in some real world sailing language fit for any salty dog. Also the safety message applies IRL--if traffic has a steady bearing in the black zone it's time for an evasive turn!
Description of various sailing rigs from the PolySail library.
nautical terms basic sailing - Google Search
aft stern port starboard diagram
Chart: Quickstop Approach to a Man Overboard
wind and sail - Google Search
.Speed of multi hulls Hobie Cat
Typical routes and routeing advice across the Atlantic