Are the electronic parts ruined when a ship is sunk?
Generally not. Most ships have “water-tight” boxes that surround the electronic parts. Some captains prefer to “water-proof” the servos and RX separately, in order to save space. In either case, even if the equipment gets wet, since all battles are conducted on fresh water ponds, the wet electronic parts can be disassembled and dried in the sun in about an hour. Experienced captains can sink in the morning, disassemble and dry everything and be ready to battle again in the afternoon.