From our Book, The Scuba Snobs' Guide to Diving Etiquette, and The Scuba Snobs' Guide to Diving etiquette book 2, I offer the following tips, heavily edited for a reasonable length post:
Rules Of Etiquette On The Day Boat
USE A BOAT BAG
... a boat bag is a soft mesh duffle bag that can be collapsed to the size of a shoebox or smaller. It will hold all your gear, and it will not be in the way on the boat. Get one. Use one.
LISTEN TO THE BRIEFING... On every dive, please ... listen to the divemaster’s (and if applicable, the captain’s) briefing. ... To listen to the briefing means you are not doing anything else...
KEEP YOUR STUFF OUT OF THE CAMERA BUCKET/WASH most but not all day boats will have a large bucket or barrel filled with fresh water into which cameras and nothing else are placed. These camera buckets give expensive photo and video equipment a safe ride and keep them out of everyone’s way while on board. The camera bucket is not for you to dip your mask in, or to wash off your regulator or your computer or buoyancy vest or anything else.
DON’T SMOKE Here is a simple rule: No smoking. No smoking of anything, at all. Don’t even bring smoking materials on board...
PUKE ONLY WHERE APPROPRIATE Never puke on another diver. Never puke on the boat. Don’t puke in the camera bucket either. Puke over the side of the boat. That’s about all there is to it. ...
PEE ONLY WHERE AND WHEN APPROPRIATE The jury is in. The debate is over. It is ok to pee in your wetsuit when in the ocean. It is okay to climb back on the boat if you wait at least five minutes after peeing in your wetsuit in the ocean before re-boarding. It is not ok to pee in your wetsuit when on the boat. If you are on the boat and have to pee, and there is no head (toilet) on the boat, either hold it or jump in the water and pee. This works best if the boat is not moving and if you tell at least one other person, preferably a crew member, that you are jumping in for a minute. Once you have finished, wait five minutes and then re-board. Guys, it is not ok to lean over the gunwale, pull it out, and let fly. Ever. This is not ok for the ladies either, just in case you were wondering.
DON'T 'COMPLAIN" On the day boat, it is ok to introduce yourself to other divers and ask where they are from. Polite greetings and exchanges are appropriate. If you lack a dive buddy, it is appropriate to ask others on the boat if they have a buddy and, if not, if they will buddy with you. But don’t be a pest about it. After a dive, it is appropriate to share with others all the cool stuff you saw. That’s why we all dive. It is also ok to report any symptoms of decompression sickness or other injury or problems. In fact, always do that. Polite, pleasant and positive conversation is always appropriate. Other stuff is not. Here is a list of conversation don’ts:
* Don’t bitch at anyone on the boat, including your dive buddy, even if you are married to them.
* Don’t bitch to or about anyone on the boat crew
* Don’t bitch about the weather, the visibility, currents, or anything else beyond the control of the people you paid to take your diving today.
* Don’t use profanity at us or anyone else. Its bad manners.
* Don’t talk so loud that people not in your conversation end up being a part of it.
*Don’t criticize other divers. ... We hear husbands and wives speaking critically to each other before and after dives. Sometimes a parent will yell at or be critical of a child. Sometimes it’s a future ex-boyfriend criticizing his for-the-moment girlfriend. When any of this happens, it can totally suck all the positive energy off of the boat, and even out of the surrounding ocean....
PLEASE TIP Tip something. Tip in local currency if you can. Always tip in cash. If you are clueless as to what is appropriate, then tip five to ten dollars per tank per diver. That’s a fair range. The tip can be on the lower end if the services provided are minimal, more if someone set up your gear for you, changed out your tank, gave you a beverage and/or snack and/or lunch. You should tip more if the divemaster retrieved the piece of gear you dropped overboard, or saved your life, or did something else special like that. Some boats have a tip jar. We make a habit of asking if there is one, and usually ask loud enough so other people will hear us ask and hopefully tip. If there is a tip jar, put your entire tip in it. ...tip every day since the crew and dive masters may change daily.
Move slowly and carefully when you have your dive gear on....
Don’t loiter in the entry and exit areas. Once you have geared up and moved to the dive platform or other entry area, jump in, Signal the boat you are ok, and swim away from the entry area. If you need your camera handed to you, linger only long enough to receive it and then move out of the way. Moving off to the side is best. ...
Don’t crowd. Related to the “don’t loiter” ... Don’t crowd anywhere, any time, for any reason. Sometimes the dive boat can be quite cramped, especially when full. But when it isn’t, leave a little space between yourself and the next diver. You will both be happier, and it will be easier to gear up and strip off. If every “station” is full, then sometimes it pays to wait until the person next to you has gotten their gear on and left the boat before you put your gear on. .... don’t crowd when entering the water, either. Let the person ahead of you jump in, signal ok, and swim clear of the entry area before you jump in.... At the surface, don’t crowd on any line you might be holding onto awaiting your turn to board, and don’t crowd others on the boat ladder....
Don’t Touch Other People’s Stuff... This rule also applies to presumptive “borrowing.” As a rule, divers are a generous people, and, if you ask, they will share their
de-fog, their water, a tool for repairs, and sometimes spare parts or an extra mask. But ask first! Otherwise, don’t touch other people’s stuff. Not touching other people’s stuff necessarily includes not moving other people’s stuff. If someone has staked out their spot on the boat with their gear set up, boat bag under the seat, and towel secured in a dry area or tied to an overhead rail, leave it alone....
Move your stuff out of aisles on the dive boat. ...
Hope these comments are useful By the books to get the full discussion. And yes, most dive boats go our rain or shine (unless there is lightening) Have a great trip.
DivemasterDennis
O