>>2577396Are you retarded or something? Who's going to man the davit to lower you into the water? Who's going to helm the boat while you're exploring underwater?
Anyway, a yacht big enough to house a submarine like OP's will probably have a crew of at least 4-6, assuming charter. Rich yacht owners still have crews to run their vessels as well.
>>2577470Is this for the seecrit underwater tunnel to access the super seecrit bunker on the St. James island?
