http://lever.cs.ucla.edu/geoff/mnemonics.html

"When one is first learning boating, there seems to be an endless
confusion of terms, procedures, and rules to be memorized. Many of
these are critical to safety, and over the years boaters have invented
various little mnemonics to help them navigate the complexities. This
Web page is a collection of such mnemonics, most time-honored, but a
few invented by the author of the page (Geoff Kuenning) to fill in the
gaps where none were available."