A final update. Yesterday I received the final installment of my reimbursement for items lost in the sinking. The dive shop's insurance company sent me a check about a month ago, less the deductible. I reasoned that I am not the client of the insurance company. The dive shop is, therefore the dive shop should pay that. After a few emails I convinced the owner to send me a check to cover that deductible. I have received it and will take it to the bank today. He also told me that the Safari Diver is up and running and "she will be back in service in a couple of weeks."
Who wants to take bets on how long it is before the boat is underwater again?