Abstract: Disclosed are ice-breaking units for ships adapted to be installed at the bow and/or bottom portion of the ship's hull, consisting of two ice-breaking units each of which can be reversibly driven independently of each other, for performing ice-breaking and/or propulsion of the ship. The ice-breaking unit has a screw-like body having a spiral blade wound thereabout. The ice-breaking units may be disposed at the bow portion, at both sides of the longitudinal center line of the ship, in parallel with or normal to the latter, or may be arranged to have a propulsion portion and an ice-breaking portion, respectively. The two screw-like bodies may be driven simultaneously in the same direction or reversed, or may be rotated in the opposite directions, to provide thrusts to move the ship in any direction of ahead/astern and port/starboard.

Abstract: In outboard motors of the type in which an electric motor is encased in a housing submerged beneath the water surface and from which a rotatable steering shaft extends upwardly therefrom, which shaft is caused to rotate responsive to longitudinal motion of a Bowden wire or other type of horizontally moving force, there is provided an improved remote steering control for effecting longitudinal movement of the Bowden wire. The Bowden wire is connected at the free end thereof to an actuating arm extending outwardly from a seat pedestal or support shaft, so that rotation of the seat causes a responsive longitudinal movement or "stroke" of the Bowden wire to change the direction of movement of the boat.