摘要:
The present invention relates to a marine vessel (1) with a hull (10) with a bottom (11), a bow, a stern (13), and a propulsion arrangement (2) including at least three propulsion units arranged at the stern of the marine vessel. The marine vessel (1) has a base line and a centerline. The at least three propulsion units include a centerline shaft propulsion unit (21) with a shaft line (22) and a propeller (23) and two turnable propulsion units (30) with respective propellers (31) and arranged at opposite sides of the centerline shaft propulsion unit. For improving thrust efficiency, while maintaining optimal steering capability, the propeller (23) of the centerline shaft propulsion unit (21) is arranged at a given distance aft of the stern (13) of the marine vessel (1).
摘要:
A stem structure for a ship is provided with propellers, propeller shafts, and a stern structural body, Propeller shaft tubes are provided so as to correspond to the propellers and have inserted therethrough the propeller shafts which are connected to the propellers. The stem structural body extends rearward from the stern portion (3) of the ship's body, expands outward relative to the center line (C) of the ship's body, and encompasses the portions of the propeller shafts which extend rearward out of the stern portion (3) of the ship's body. The inner side of the stern structural body is located within the ship's body. The stern structural body supports, within the ship's body, the propeller shaft tubes.
摘要:
Bearing (1) for the propeller driving shaft (18) of a boat comprising at least one element of attachment (3, 4, 22) to the hull (2) and at least one bearing arm (5, 21) of the propeller driving shaft (18). The element of attachment (3, 4, 22) and the bearing arm (5, 21) are connectable together and mutually orientable and/or adjustable about at least one axis (B, C), and are mutually lockable in the final selected position.
摘要:
A propulsion device for a ship (1) includes a port propeller (10L) and a starboard propeller (10R), a rudder (40) disposed at a center (C) in a vessel widthwise direction, and shaft brackets (13R, 13L) installed in front of the port propeller (10L) and the starboard propeller (10R), respectively, and configured to rotatably support propeller shafts (12R, 12L) of the port propeller (10L) and the starboard propeller (10R), wherein a distance between a front end of a propeller blade of the port propeller (10L) and a front end of a propeller blade of the starboard propeller (10R) at the center (C) in the vessel widthwise direction is larger than 0 m and equal to or less than 1.0 m, and a rotational direction of the port propeller (10L) and the starboard propeller (10R) becomes an outer track rotating outward from the center (C) in the vessel widthwise direction over the port propeller (10L) and the starboard propeller (10R).
摘要:
A stern structure of a ship includes a plurality of propellers (10,22), a plurality of propeller shaft tubes (11,21) configured to be provided correspondingly to the plurality of propellers (10,22), and a plurality of propeller shafts (12,22) connected to the plurality of propellers (10,20) being inserted into the plurality of propeller shaft tubes (11,21). A stern structural body (6) is configured to be provided so as to be joined to a rear part of a stern body (3), and support portions of the plurality of propeller shafts tubes (11,21) extending backwardly from the stern body (3). The stern structural body (6) includes a side fin (63,73) configured to extend backwardly from the stern body (3), spread externally with respect to the ship body center line (C) and be joined to side portions of the plurality of propeller shaft tubes (11,21) to support the plurality of propeller shaft tubes (11,21), and an upper fin (62,72) configured to be provided separately at a rear of the stern body (3), extend downwardly from a bottom of the stern body (3) and be joined to upper portions of the plurality of propeller shaft tubes (11,21) to support the plurality of propeller shaft tubes (11,21). The side fin (63,73) and the upper fin (62,72) are joined to the stern body (3) to coincide with directions of stream lines around the ship body.
摘要:
A stem structure for a ship is provided with propellers, propeller shafts, and a stern structural body, Propeller shaft tubes are provided so as to correspond to the propellers and have inserted therethrough the propeller shafts which are connected to the propellers. The stem structural body extends rearward from the stern portion (3) of the ship's body, expands outward relative to the center line (C) of the ship's body, and encompasses the portions of the propeller shafts which extend rearward out of the stern portion (3) of the ship's body. The inner side of the stern structural body is located within the ship's body. The stern structural body supports, within the ship's body, the propeller shaft tubes.
摘要:
Boat (10) comprising a steering and propelling unit comprising at least one driving shaft (11, 11') passing in an opening of the transom (12) for transmitting the motion from a motor to at least one propeller (21, 21'), at least one steering (14) provided at the top with at least one rotation pin (13), and a through-hull support (100) able to be associated with the opening and equipped with a plate portion (101) able to be fixed on the outside to the hull (12) of the boat (10) and with a through- hull tubular portion (102) for support of the at least one driving shaft (11, 11' ), in which the through-hull support (100) also comprises at least one bush (103) passing through the plate portion (101) to support, in a rotary manner, the pin (13) bearing the steering (14) and in which the wall (12) of the hull where the passage opening of the at least one driving shaft (11, 11') is formed is inclined from the top to the bottom in the direction of the stem of the boat (10).