Abstract: Various aspects provide for “parking” an apparatus in a parking configuration. A parking configuration may be a configuration of an apparatus that minimizes damage (e.g., corrosion, wear, and the like) resulting from extended exposure during periods of inactivity. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. An apparatus may comprise a linkage or other device positioned by an actuator. Some aspects include a water jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts.

Abstract: Various aspects provide for “parking” an apparatus in a “parking position.” A parking position may be a configuration of an apparatus that minimizes damage resulting from extended exposure during periods of inactivity. An apparatus may comprise a marine apparatus, which may be configured to be disposed in an environment comprising saltwater, salty air, brackish water, freshwater, and the like. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. Some aspects include a water jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts. A control cylinder and/or a linkage may be parked in a configuration that segregates damage incurred during periods of inactivity to portions of an apparatus not needed for normal operation.

Abstract: Various aspects provide for “parking” an apparatus in a “parking position.” A parking position may be a configuration of an apparatus that minimizes damage resulting from extended exposure during periods of inactivity. An apparatus may comprise a marine apparatus, which may be configured to be disposed in an environment comprising saltwater, salty air, brackish water, freshwater, and the like. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. Some aspects include a water jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts. A control cylinder and/or a linkage may be parked in a configuration that segregates damage incurred during periods of inactivity to portions of an apparatus not needed for normal operation.

Abstract: A propulsor arrangement for operation in icy as well as open water, for a marine vessel having a hull (S) with a center line (CL) extending between a forward end (3) and an aft end (4), said propulsor arrangement comprising a plurality of azimuthing thrusters (1A-ID) having a center of rotation (CR) and a longest lateral distance (R) that it protrudes from said center of rotation (CR), preferably having at least one azimuthing thruster (1A-ID) with a propeller (2) arranged to act in ice, wherein said propulsor arrangement includes at least three azimuthing thrusters (1A, 1B, 1G) positioned close to one end (3, 4) of said hull (S), including at least one pair (1A, 1B) positioned substantially symmetrical in relation to said center line (CL) along a transversal line in relation to said center line (CL) a first distance (Q1) apart a and at least one azimuthing thruster (1G) positioned closer to said end (3, 4) and said centerline (CL) and positioned a longitudinal distance (P1) away from said transversal line.

Abstract: A propulsor arrangement for operation in icy as well as open water, for a marine vessel having a hull (S) with a center line (CL) extending between a forward end (3) and an aft end (4), said propulsor arrangement comprising a plurality of azimuthing thrusters (1A-ID) having a centre of rotation (CR) and a longest lateral distance (R) that it protrudes from said centre of rotation (CR), preferably having at least one azimuthing thruster (1A-ID) with a propeller (2) arranged to act in ice, wherein said propulsor arrangement includes at least three azimuthing thrusters (1A, 1B, 1G) positioned close to one end (3, 4) of said hull (S), including at least one pair (1A, 1B) positioned substantially symmetrical in relation to said center line (CL) along a transversal line in relation to said center line (CL) a first distance (Q1) apart a and at least one azimuthing thruster (1G) positioned closer to said end (3, 4) and said centerline (CL) and positioned a longitudinal distance (P1) away from said transversal line.

Abstract: This invention relates to a device and method of reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster (1) having a rotary pod housing (2) with a substantially vertical slewing axis (3) and a fixed downwardly directed first fm (4) carried by the pod housing (2) abaft the slewing axis (3), wherein said first fin is in the form of an elongated strip-shaped vane (4) and extends abaft the slewing axis (3) along the pod housing (2) to the vicinity of a rear end (5) thereof.

Abstract: In a shaft coupling having a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which can be clamped together by means of clamping elements to form a split coupling sleeve provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2?) so that the first and second shaft members are aligned.

Abstract: A marine propeller comprises a hollow hub body (11), a plurality of propeller blades (16) and a plurality of fastening devices (19, 21) for each propeller blade (16). Each fastening device includes a tension rod (19) and a flange member (22) mounted on the tension rod. The propeller blades (16) may be turnable for adjustment of the blade pitch angle (&agr;) and lockable in a selected position by means of the fastening devices (19, 21). The flange member (22) has a plurality of recesses (23) and tensioning members (24) received in the recesses. These tensioning members (24) are extendable from the flange member (22) towards the hub body wall (14) to apply tension to the tension rod (19).