All of these boats have different requirements from you, the paying passenger. The large live-aboards allow you to carry ample gear and clothing for use over a four or five day period. Most of this gear will finish up in your cabin, with only the dive gear staying on the dive deck. Large day-tripper boats also allow you to take some of your luggage on board as well as your dive gear. However, with your dive gear on the dive deck and other valuables in the passenger areas, security could be a problem. On smaller boats, there is only a dive deck, so only your dive gear should be brought on board; unless an extended trip requires lunch and refreshments. The articles not required for diving should be left at home or locked in the boot of your car.
The skipper of the boat has the task of taking you safely on your trip. The dive supervisor (or dive-master) has the job of safely conducting your dive. Both of these roles may be conducted by the same person on smaller craft. The deck hand may also be a dive supervisor or it may be the skipper. To perform their jobs safely also requires some effort on your part to listen to any briefs and to do as requested from time to time; even if it may mean some inconvenience on your part. After all, it is every-body’s safety and comfort to be considered.