(1) Many decades ago, living land-locked, I took to sailing on the busiest inland waterway in Europe, teeming with barges. When introducing novices, everybody in the sailing club was adamant, never to try bow-crossings on commercial vessels, for obvious reasons.
(2) In German, the maritime professional’s term for WAFI translates as “white plague”. As a sailor, I sometimes feel embarrassed by some of my fellow hobbyists’ behavior. The majority of sailors, however, seems to be rather well-trained and responsible in my experience. As in any field, a few idiots will compensate for the vast majority of sensible people.
(3) Every sailing instructor, I ever took a course from, insisted on these informal basic rules beyond colregs:
I) “We are doing this for fun, they are doing this for a living. Respect them.”
II) “Reconsider basic geometry class. Draw a line of sight from the bridge of a large container ship across her foredeck and project your own visibility” (having said that, I still underestimated the extent of reliance on radar on a commercial ship’s bridge)
III) With a GRP hull, you will not even scratch their paint."
(Of course, suction effect, inertia and gear/engine reversal times were also covered)
(4) When I delved into coastal/offshore sailing, I purchased (and diligently read) a two volume standard nautical textbook to get a better technical understanding of big vessels and the mariner’s perspective. That got me hooked.
(6) The maritime museum in Hamburg has a ship simulator open to the public. Should be a mandatory visit for recreational sailors 