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JP2021098467A |
To automatically suppress chine walk.A steering control device for vessel is provided having an acquirement unit for acquiring at least one behavior of a hull regarding deviation in at least one direction of a rolling direction, a yaw di...
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JP6883862B2 |
A ship setting a small duct of the present invention includes a propeller 10 and a duct 20, a propeller load condition of the ship's hull 1 in an actual sea is set to 1.0 or more and a vortex resistance of the ship's hull 1 in the actual...
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JP2021070456A |
To provide a vessel making safe and comfortable navigation possible by preventing plastic litter and water plants, etc., wrapping around a propeller during navigation.A cylindrical protection cover 4 surrounding a propeller 3 of an outbo...
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JP6841540B1 |
To control a ship position without being hindered by interfering with a main propulsion device by an outboard motor or an outboard motor, and when the thruster is exposed on the water surface, the thruster thrust becomes unstable and the...
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JP2021030819A |
To provide an outboard engine and a ship capable of avoiding submergence at the time of tilt-up while suppressing the weight increase of the outboard engine.This outboard engine 100 comprises an engine E, a drive shaft 3 to transmit the ...
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JP6832304B2 |
The present invention provides a ship propulsion apparatus, which is possible to collect axial flow energy generated by rotation of a propeller, and a ship. The ship propulsion apparatus comprises: a propeller formed on a stern portion; ...
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JP6831459B2 |
The invention provides a method for operating a marine vessel (1) comprising a plurality of propulsion units (106, 107, 108, 206, 207, 208), each being arranged to deliver thrust to water in which the vessel (1) is floating, the thrust d...
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JP6827034B2 |
This ship propulsion device is equipped with an energy-saving appendage 5 which is located forward of a propeller 1 and which has a curved surface having a radius R smaller than the radius r of the propeller 1. The pitch of the blades 3 ...
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JP6829013B2 |
An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises...
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JP2021011178A |
To provide a ship capable of improving turning ability of the ship.A controller receives a signal indicating an operating amount and an operating direction of a steering member. The controller makes a hull turn to the direction according...
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JP2021011202A |
To provide a propulsion system capable of reducing fuel consumption in low speed navigation, etc, by being capable of stopping an engine directly driving some propulsion devices among a plurality of propulsion devices while maintaining s...
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JP6826276B1 |
To provide a method for identifying the degree of propeller cavitation. A step of collecting a noise signal of a propeller in water, a step of obtaining a circulation density spectrum, a step of averaging and constructing an enhanced env...
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JP6826671B2 |
A lifting spindle arrangement is disclosed for a retractable thruster unit of a marine vessel, the lifting spindle having a lower end and an upper end and being supported at its lower end to a lower support structure by a lower support a...
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JP6811629B2 |
This duct device 1 is provided with an inner duct 2, an outer duct 3, and a stay, wherein the opening area Ao of an outflow port 8 between ducts defined by a rear end part 22 of the inner duct 2 and a rear end part 32 of the outer duct 3...
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JP6799374B2 |
The invention relates to an underwater turbine for use under water, that may comprise fish, for instance intended for placement under water in the sea, such that electricity can be generated by tidal currents, the underwater turbine comp...
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JP6795830B2 |
To provide a stern shape having a stern duct which enhances propulsion efficiency by use of a flow below a propeller, and a marine vessel.A stern shape comprising a propeller 20 which is provided at a stern of a hull 10, and a stern duct...
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JP6786748B2 |
A maneuvering system for a ship 1 provided with, in the stern, two propulsion systems 2, 3, i.e., a port-side propulsion system 2 comprising a port-side propeller 2a and a port-side rudder 2a, and a starboard-side propulsion system 3 com...
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JP6783243B2 |
This marine propulsion unit (100) includes a duct (1) including a stator (11), a propeller (2) including a rim (21) including a rotor (23) disposed at a position that faces the stator and a blade (22) provided radially inward of the rim,...
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JP2020175877A |
To provide a propulsion device for a vessel.A propulsion device for a vessel includes: a gear box; a screw propeller, an annular fluid guiding unit; and a rectifying nozzle. The gear box includes a box and a transmission shaft. The trans...
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JP2020172241A |
To provide a propulsion system for a power type vessel.A propulsion system for a power type vessel includes a supporting member, an outboard engine, a water guiding member, and a water drawing unit. The supporting member is attached to a...
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JP6770064B2 |
An appendage 8 for reducing a hub vortex is arranged, through a support 7 extending from a hull 2, behind a propeller (wing propeller) 4 having no rudder behind the propeller. The appendage 8 is in the form of a spindle having a circular...
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JP6763073B2 |
A method for controlling low-speed propulsion of a marine vessel (10) powered by a marine propulsion system (20) having a plurality of propulsion devices (12a, 12b) includes receiving a signal indicating a position of a manually operable...
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JP6758210B2 |
The present invention is provided with: a duct 2 that has at least a cylindrical body portion and that is arranged around a stern tube 104 supporting a propeller shaft at a positon forward of a propeller provided to the stern of a vessel...
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JP6752361B2 |
The boss of a front propeller (2a) is fixed to a propeller shaft (5), and the boss of a rear propeller (2b) is supported by the propeller shaft (5) so as to be freely rotatable about the axis (Z-Z) of the propeller shaft (5). A reversal ...
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JP6748502B2 |
This ship comprises a duct device (15) which is disposed at a portion of the ship body (11) further towards the bow side than a propeller (13) in the stern (17) and extends in the X direction of the propeller (13), and which discharges t...
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JP2020525356A |
The present invention particularly relates to a propeller pump type hydraulic propulsion device for ships (hereinafter referred to as "propeller pump type hydraulic propulsion device") and a ship provided with the device. The propeller p...
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JP6736576B2 |
An apparatus and a method for installing a propulsion unit to a hull of a ship. The propulsion unit comprises an upper part of the propulsion unit attachable to the hull of the ship and a lower part of the propulsion unit where to a prop...
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JP6722340B1 |
To provide a stern structure capable of further improving propulsion performance by utilizing a bilge vortex. A stern structure 1 has a stern boss 3 located in front of a propeller 5, a fan-shaped duct 6 provided in the stern boss 3 so a...
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JP6720302B2 |
The invention relates to a cover device for at least sectional closing of an underwater opening in a hull of a watercraft, in particular an opening of a transverse channel of a thruster. According to the invention the cover device includ...
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JP2020518508A |
The present invention relates to a covering device for at least partially closing an underwater opening in the hull of a ship, particularly an opening in a transverse channel of a thruster. According to the present invention, the coverin...
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JP6704303B2 |
To provide a reaction fin device which can enhance the efficiency of energy recovery in a propeller and further improve the propulsion efficiency of a hull.A reaction fin device 1 is a device comprising a plurality of reaction fins 11, 1...
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JP6700430B2 |
The propulsion unit includes a frame construction having an upper portion forming a support arm protruding from a hull of the vessel and a lower portion forming a longitudinal compartment provided with a propeller shaft having at least o...
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JP6689736B2 |
The present invention comprises: a duct (22) which is located in front of a propeller of a ship, and is fixed to a bossing (11) side so as to surround the rotational axis (L1) of the propeller; inside fins (24) which have outer ends fixe...
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JP6676276B2 |
To provide a storage battery propulsion system which can suppress lowering of energy efficiency while reducing global environment loads, and a storage battery propulsion ship.A storage battery propulsion system is equipped with: an AC bu...
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JP6678575B2 |
The invention relates to a device for reducing the driving power requirement of a watercraft, comprising a flow guiding surface from which at least one first fin projects. A first end of said first fin is fixed to the flow guiding surfac...
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JP2020040611A |
To provide a simple hybrid system for a ship propulsion.A drive transmission shaft 23 is rotated by one or both driving forces of an engine 5 and a motor 6 in a hybrid system 1 to drive a propeller 2. A marine gear 12 decelerates rotatio...
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JP6670414B1 |
To provide a stern fin capable of improving propulsion performance by obtaining a thrust sufficient to offset resistance. A stern fin 7 is provided on a skeg 3 of a twin skeg ship and projects downward from the skeg 3. The cross-sectiona...
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JP6663144B2 |
To provide an air bubble removal device for air lubrication which maintains effects of an air lubrication method, in which air is jetted around a hull to reduce friction resistance, and rationally prevents harmful effects on the propelle...
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JP6655562B2 |
A duct device and a ship, wherein the duct device comprises: a duct body (31) which is disposed on at least a portion of the periphery of a rotary shaft (21) of a propeller (13) further towards the front than the propeller (13) which is ...
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JP6638941B2 |
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JP6636338B2 |
A vehicle includes: a power source; a first drive device configured to be driven by an output of the power source; a second drive device configured to be driven by the output of the power source; a non-stage transmission device capable o...
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JP6633318B2 |
To provide a novel azimuth propeller.An azimuth propeller comprises: a drive rotation shaft for driving a propeller; and at least one thrust bearing mechanism and at least one radial bearing mechanism for supporting the drive rotation sh...
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JP6621911B2 |
A lift generator (10) is positioned in front of a propeller (3) of a ship (1). The lift generator (10) includes a wall part (7) extending in the circumferential direction around an extension line (Ce) of the central axis (C) of the prope...
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JP6619082B2 |
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JP6618868B2 |
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JP6618869B2 |
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JP6590414B2 |
The invention relates to a pod propulsion device including a motor casing (3) and a strut (2), which strut (2) is connected at a lower part thereof to the motor casing (3) and is arranged to be connected at an upper part thereof to a hul...
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JP6589199B1 |
To disclose a steam turbine facility for high-speed conversion. The high-speed turning steam turbine equipment of the present invention includes a device main body, a guide device installed in the device main body, a power device install...
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JP6589201B1 |
To disclose a steam turbine facility. A device main body, a guidance device installed in the device main body, a power device installed in the device main body, an emergency lifesaving device installed in the device main body, and a wate...
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JP6589200B1 |
To disclose a triple screw drive steam turbine facility. A device main body, a guidance device installed in the device main body, a power device installed in the device main body, an emergency lifesaving device installed in the device ma...
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