It's accounting, barges, boat building, boat repair, canoeing, carpentry, communications, crane operations, cruise ships, culinary, data management, diving, ecology, engine repair, entertainment (on board), environmental sciences, fishing, GPS, GIS, hotel management (shipβs steward), international business, kayaking, legal/law, management, marine biology, engineering, marina management, material handling, mechanics, medicine, naval architecture, oil rigs, personnel, port operations, port security, private yachts, radar, recreational boating, sailing, sail making (sewing) scheduling, shipping, simulation, swimming, trade and commerce, tug boats, welding and so much more!