But seriously, folks, if its a day boat:
1. Dive deck low to the water
2. Individual diver stations at least 26" wide (28 is better)
3. camera table
4. dry area for towels, clothes, log books, etc.
5. all walk ways at least 24 " wide ( unobstructed space)
6. ladders that extend at least 28" below water line for easy boarding
7. marine head
8. adequate drinking water ( 1/2 gallon per diver in large barrels ) decent cups to drink it from
9. dedicated camera rinse reservoir
10. fresh water rinse off shower ( hot water optional, but nice)
11. visible and accessible first aid kit and O2 kit
12. overhead rails for hanging onto when moving about
13. at least some overhead storage ares low enough for people under 5'6 to reach
14. secure tank racks so tanks do not shift or fall
15. non-slip deck surface of some kind.
I am sure others will add to this list. Good luck with the dive boat venture.
DivemasterDennis