Bananas give off a gas as they ripen that can ripen other fruit and veges stored with it too quickly and spoil it. So does avocado. I hadn’t heard about bananas being carried on lower quality boats and thus more likely to be shipwrecked or whatever but it’s plausible. Possibly goes back further than that, though, when bananas were stored onboard with other produce and it went off and the crew got sick, so then they started carrying bananas in separate, cheaper boats? My wife loves bananas. She doesn’t fish with me often but when she does, she sometimes brings a banana or two. It doesn’t seem to affect her fishing though, as she’ll often out fish me on the day! 🤷♂️Of course, I claim that I’ve focussed on putting her onto fish as it’s not all about me! 😂 I only let her bring bananas aboard in the Bay, though, not offshore, just in case of a banana generated breakdown! 😂