A dedicated camera table on the main deck with a padded top, compressed air, and a bank of sockets on their own circuit so a kettle cannot take your charger down.
Two rinse tanks, one for cameras only, and the crew will tell anybody who puts a fin in it to take it out.
Sockets are two round pins and three flat pins. Bring both adaptors, because the boat has four spares and there are sixteen of you.