The Mariner multi screwdriver form PicQuic is the marinized version of the 6pk 6-in-1 multi screwdriver.
Having tools in a marine environment can wreak havoc; corrosion and rust are the most common issues rendering many regular tools ineffective.
The use of stainless steel shanks and nickel plated bits make this tool a useful item.
There is also a holder for many more bits to cover all the needs you may have.