Profile: Ships Machinery International, Inc provides heavy duty marine equipment. Our product line include SMI tunnel thrusters, custom designed propellers, BRUNVOLL controllable pitch thrusters, winches and anchors. We produce L-Drive thrusters in capacities from 250 to 1000 h.p. They are designed to accept diesel engine, electric or hydraulic prime movers, and utilize both fixed and controllable pitch propellers to satisfy any precision maneuvering application. It features a hydrodynamically streamlined Ni-resist gear case. The high nickel content of the gear case makes it durable and non-corrosive.