Well as I was told, It came from the days of wooden ships. Something to do with when bananas rot, they weaken the wood, but anyway they're back luck. I was on a charter boat in North Carolina, I was asked if I had bananas in my snack box. When I said yes, they told me to eat it before I boarded, or throw it away. Thats when they told me about bananas being bad luck. Went on to say last peron who boarded the boat with a banana broke his arm. So that's the best to explaination I got. Now back to the show.
I was told that the bananas are bad luck thing got started on banana boats where spiders in the bananas would bite the crew who would get sick, die, etc.
On a more practical note, bananas seem to be associated with sea sickness. Maybe not a big deal in the Carribean, but it can be in NC.
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Stuff I see new boat divers do that they should not:
1. Jump in with BC fully inflated in current where they need to get down to the granny line as soon as possible.
2. Ascend without looking up, and almost getting beaned in the head by the rudder or prop.
3. Spread their gear all over the boat. Stuff your gear in the bag in the reverse order that you assemble it. If possible set up your tank, regs and BC before the boat ever leaves the dock. Keep everything else in the bag until you need to assemble it. Keep the bag stowed under your spot on the bench. Leave the big roller bag in your car, carry your stuff aboard in a smaller frameless bag that will stow in a smaller space.
4. Have a new computer with no real clue how to use it or set it for the nitrox mix they are really using.
Good stuff to know:
1. Keep your mask where it will not get stepped on. Putting your mask in a fin foot pocket and putting the fins under the bench usually works well. Bring a back up mask anyway.
2. In rough seas, keep head movement to a minimum, lots of bending over etc. can cause nausea in rough seas.
3. Even if you have never gotten motion sickness, take something anyway (Triptone, Bonine, etc) Do a test run at home before the trip to see if it makes you sleepy, etc. Take it the night before then about an hour before the boat leaves the dock.
4. Nothing goes in the average marine head that did not pass through you. Everything else goes in the trash can. Everything else.