As it happens, there is a list of 20 but one or two are of interest to us (I dare to suggest!):
The whistle in this article is in reference to sailing but would be the same for anyone floating on water after the famous 'landing on water'.
Would that whistle on a lifejacket ever be heard by anyone?The desperate blow of a whistle in the pitch black may have looked convincing in Titanic. But it is unlikely to lead to a happy ending in real life. You're already in a bad place, and a shrill 1970s whistle doesn't offer any guarantee of being picked up and taken to safety. "Most search-and-rescue teams now have sophisticated technology, including infra-red and heat-seeking cameras, that are more likely to find you than the use of a whistle," says the International Aviation Bureau's Phil Seymour.
Here's the rest, plus one other for pax, about sitting near the exit doors.
Twenty holiday myths exposed - This Britain, UK - The Independent