Speaking of navigation lights, when the big supertankers first came out, folks weren't used to seeing them at night. There were several incidents around Tokyo Bay where small coastal freighters thought that, because the masthead and bow lights were so far apart, the tankers were two separate ships and tried to go between the lights. Wasn't long before the tankers started hanging strings of lights down the sides of the ship to show that they were one ship. Of course, then they looked like a lighted bridge.
If you are unfamiliar with navigation light patterns, here's a test: http://www.usboating.com/testlights.asp Even if you think you know, it's a good refresher. I always miss several. Dennis C. Touche' 35-1 #83 Mandeville, LA
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