Railway yard workers regulate traffic and couple, uncouple, and switch train cars.
Railway track maintenance workers lay, maintain, and repair tracks.
Water transport deck crew stand watch, and operate/maintain deck equipment.
Engine room crew assist in the operation, maintenance, and repair of engines/equipment on ships/vessels.
Lock operators open and close locks along canal systems.
Cable ferry operators run cable ferries across narrow waterways.
Boat operators run small boats to transport passengers/freight.