Large taper diameter: 50mm (generally corresponding to the diameter of the propeller shaft)

A propeller shaft (11) driven by a main machine (12) is provided with a propeller (13) mounted in such a manner that the blade angle of the propeller (13) is variable.

One screw (4) is fixed to a first hollow screw shaft (3) and the second screw (6) is fixed to a second screw shaft (5) which runs concentrically inside the first screw shaft (3).

A marine propulsion unit comprises a cowl (10), a propeller shaft (4) mounted on the cowl, and a propeller mounted on the propeller shaft.

Apparatus for adapting a propeller system including a propeller shaft (15, 16) and a propeller (7, 8) adapted to be mounted on the propeller shaft (15, 16).

Built together with the rudder (1) is a propeller unit (2) which includes a propeller (6) which is mounted on a horizontal propeller shaft journalled for rotation in a propeller unit housing (9).

Cutting apparatus for cutting debris from a propeller (16) fixed to a propeller shaft (15) comprises a spool (12) and a cutting blade (14).

The invention also relates to a propeller shaft (15, 16) and a propeller (7, 8) which are intended to be used in the propeller system.

The present invention relates to a stern tube (1) for ships, for enclosing a propeller shaft (2) which extends between a propeller and a driving motor.

A connector for connecting an impeller (1) to a shaft (2) is provided.

Boat propeller transmission with a horizontal input shaft (1), a bevel gear set (3, 4a, 4b), a vertical intermediate shaft (5), an additional bevel gear set (30, 31, 32), and at least one horizontal propeller shaft.

A device for releasably securing a propeller (1) to a propeller shaft (3) by the use of at least one attachment device for securing the propeller (1) to the propeller shaft (3).

Marine propeller shaft assembly (1), for counter-rotating propellers (not shown), includes inner shaft (2) and coaxial, counter-rotating, outer shaft (3).

Each hull (111) comprises an independent engine that drives a propeller shaft (212) and propeller (213) that is located amidships.

(ii) a shaft revolution and direction indicator for each propeller shaft,