New & used manned submarines available from 3 to 50 passengers in size. Illustrated is a 10 passenger Tourist Submarine rated to 50m operating depth. All come with the well proven SDE AC propulsion system. Business plans, survey services & technical services available to existing & prospective operators of working, research & tourist submarines. We can offer a full factory support facility to all submarine operators for replacement of existing components or design & manufacture of new components as required.