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JP4786645B2 |
The present invention relates to a method and an auxiliary device in connection with disassembly and/or assembly of a tunnel thruster unit by use of the auxiliary device (1) to guide the thruster unit (2) and its movement during disassem...
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JP4781350B2 |
In a ship including a single screw vessel type stem equipped with overlapping propellers, a waterline shape of a stem S in an area of at least 0.4R (R denotes a propeller radius) in a vertical direction from shaft centers of propellers 1...
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JP2011184042A |
To provide a method and a device for manufacturing a propeller nozzle ring.The method for manufacturing the propeller nozzle ring includes: a process of forming a circular mold 220 having a side profile whose width widens toward one end ...
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JP2011178222A |
To further improve performance for assisting the propulsive force of a ship in a ship with a propeller provided on a stern part.The ship includes the propeller 3 provided on the stern part 2, a circular duct 5 which is arranged above cen...
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JP2011174497A |
To provide a mechanism for switching the forward/backward traveling of an outboard motor having a compact structure and including a contra-rotating propeller.This outboard motor includes a drive shaft 9, a gear mechanism 28, a fixing dev...
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JP2011168075A |
To provide a thruster with a duct capable of securing stable towing force during a low speed work and improving propulsive efficiency by preventing peeling vortexes on an external surface of the duct during a high speed navigation.In the...
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JP4753936B2 |
The marine propulsion set (1, 1', 1'') comprises: at least one pod (2) that is mechanically connected to a support strut (3, 3', 3''); a propeller (4) that is situated at the aft end of the pod and that has at least two blades (14); and ...
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JP2011156964A |
To provide a considerably large-sized displacement ship which secures a large space for cargos and eliminates the need for steering by dispensing with the use of ballast water even during no-cargo navigation.In this ship, the width of th...
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JP4747685B2 |
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JP4745411B2 |
The device (10) has a front nozzle (20) including fins or air foils (30, 30d) arranged within the front nozzle, where the device is firmly attached to a ship body (100). Inner diameter of the front nozzle is smaller than 90 percent of an...
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JP2011148399A |
To provide a ship coping with possible tightening of exhaust emission regulations in a particular marine area under the exhaust gas emission regulations in the near future and to provide a method for operating the ship.The ship includes:...
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JP2011144660A |
To solve the following problems: since by abnormal weather, abnormal dryness, a forest fire, drought and concentrated heavy rain are increased and fishes are dramatically reduced, it is necessary to remarkably increase human foods such a...
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JP2011144659A |
To solve the following problems: since by abnormal weather, abnormal dryness, a forest fire, drought and concentrated heavy rain are increased and fishes are dramatically reduced, it is necessary to remarkably increase human foods such a...
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JP4733515B2 |
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JP4717857B2 |
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JP2011126509A |
To provide a ship propulsion performance improving device for giving propulsion performance improving effects even to a target ship which has a cross section shape showing a marked tendency to a V-shape and a wider deck.The propulsion pe...
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JP2011122439A |
To solve the following problems: since by abnormal weather, abnormal dryness, a forest fire, drought and concentrated heavy rain are increased and fishes are dramatically reduced, it is necessary to reduce CO2 emissions from an electric ...
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JP2011121388A |
To provide a method for preventing attachment of marine organisms to a marine propeller in order to reduce costs for cleaning the propeller.The method for preventing attachment of the marine organisms to the marine propeller includes a s...
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JP4707569B2 |
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JP2011117297A |
To solve the problem that fishes are required to be proliferated in the conditions that mountain fires due to abnormal dryness, droughts and torrential rains are increased with abnormal climates to greatly reduce fishes, while eliminatin...
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JP2011117298A |
To solve the problem that fishes are required to be proliferated in the conditions that mountain fires due to abnormal dryness, droughts and torrential rains are increased with abnormal climates to greatly reduce fishes, while eliminatin...
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JP2011117289A |
To solve the problem that fishes are required to be proliferated in the conditions that mountain fires due to abnormal dryness, droughts and torrential rains are increased with abnormal climates to greatly reduce fishes, while eliminatin...
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JP2011117288A |
To solve the problem that fishes are required to be proliferated in the conditions that mountain fires due to abnormal dryness, droughts and torrential rains are increased with abnormal climates to greatly reduce fishes, while eliminatin...
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JP2011117287A |
To solve the problem that fishes are required to be proliferated in the conditions that mountain fires due to abnormal dryness, droughts and torrential rains are increased with abnormal climates to greatly reduce fishes, while eliminatin...
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JP2011105061A |
To further accurately reflect force acting on a hull from a stern duct of an actual ship in a test of using a stern duct model.Both left and right end parts of the stern duct model 4 arranged in front of a propeller 3 are installed in bo...
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JP4688571B2 |
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JP2011098702A |
To restrain the lowering of propulsion efficiency of a rear-side propeller due to upward swirl flow of water formed by a front-side propeller around in the neighborhood of the center line, in a twin-screw vessel having overlapping propel...
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JP2011098639A |
To provide a stern structure capable of reinforcing a support structure of a propeller shaft pipe, suppressing resistance increase by additament, and improving propulsion efficiency, and to provide a marine vessel using the same.The ster...
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JP2011098704A |
To further efficiently convert energy provided by propellers of a biaxial ship into propulsion by recovering energy of a swirling flow.A propulsion device of the biaxial ship includes a pair of propellers 5-1 and 5-2 rotating externally,...
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JP2011098696A |
To improve propulsion performance, while restraining the occurrence of cavitation and erosion and becoming excessiveness of bearing force in a propeller shaft, in a biaxial ship using an OLP (overlapping propellers) system.This propulsio...
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JP2011098654A |
To provide a propulsion of a ship, by restraining the generation of cavitation.An outside propeller 3 having a plurality of blades 7 and an outside ring member 8 forming a tooth 8a on the inner periphery at the inner end of the blades 7,...
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JP4684778B2 |
To obtain the optimum propulsion performance by providing a skew of fins so as to change the water flow in the direction opposite to the propeller advancing rotational direction unless any other special reason exists in a device for redu...
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JP2011093486A |
To provide a resistance reducing device of a vessel preventing lowering of efficiency of a propeller and vibration of a hull due to inflow of bubbles into the propeller.This resistance reducing device 20 of the vessel includes an air blo...
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JP2011093503A |
To provide a propulsion structure of a twin-screw vessel, enhanced in propulsion performance.This propulsion structure includes: a first propeller structure 2-1 installed on a hull 6; and a second propeller structure 2-2 installed on the...
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JP2011093502A |
To improve the maneuverability of a vessel without deteriorating propulsion performance in a two-axis vessel using an OLP (Overlapping Propellers) system.This propulsion device includes a port side propeller 20, a starboard side propelle...
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JP2011093350A |
To achieve a turning actuator equipped with a small-sized electric motor and a small-sized speed reducer ensuring a large deceleration ratio, and greatly decreased in size; and to ensure turning torque and turning speed necessary and suf...
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JP4680895B2 |
Low drag underwater submerged lifting bodies which can be used as underwater displacement portions of a vessel whose main hull is at sea level are asymmetrical and have improved lift to drag ratios. The lifting bodies have outer surfaces...
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JP2011088612A |
To provide a large-sized multiple screw ship in which the speed range is increased and the fuel efficiency is improved.This multiple screw ship includes a first shafting device 50 to which a power is transmitted from a first propulsion e...
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JP2011089414A |
To solve the following problems: since by abnormal weather, abnormal dryness, a forest fire, drought and concentrated heavy rain are increased and fishes are dramatically reduced, it is necessary to reduce CO2 emissions from an electric ...
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JP3167085U |
To provide a nozzle propeller capable of improving thrust in a bollard state and improving propulsion efficiency during cruising. A propulsion device 10 is composed of a screw propeller 11 and a nozzle 12 arranged around the screw propel...
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JP2011063064A |
To promptly perform an appropriate turning operation of a propulsion unit according to an abnormal situation and to suppress damages to a turning device for the propulsion unit.Turning actuators 11a to 11d include gearboxes provided with...
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JP2011057081A |
To improve propulsive performance of a cargo ship of less than 500 tons gross; and improve environment of a ship crew room.In a twin-tier deck cargo ship 1 of less than 500 tons gross, the ship crew room 23 is disposed in a region locate...
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JP4656837B2 |
The invention relates to a ship's propulsion and steering arrangement surrounded by water comprising an electric motor in a chamber, a propeller shaft associated with the electric motor having a propeller fitted outside the chamber, and ...
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JP2011042201A |
To further exert an energy-saving effect by improving a stern duct existing conventionally as an energy-saving device of a vessel.This vessel 100 includes the duct 20 with small blades including a cylindrical duct body 21 arranged at a s...
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JP4639706B2 |
To provide an effective and practical rear end eddy resistance reducing device. The rear end eddy resistance reducing device comprises flat plates (pressure eddy suppression plates) provided on a rear end of an object advancing in a flui...
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JP4639176B2 |
To reduce hull resistance, by restraining a vortex and separation, by accelerating and straightening a water flow of a hull surface generated in the stern in front of a propeller in sailing, while reducing frictional resistance of a fin ...
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JP2011031858A |
To provide a pod propelling device capable of restraining the occurrence of unstable cavitation, and capable of restraining the occurrence of hull vibration and cavitation erosion when the pod propelling device turns, by making a substan...
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JP4633008B2 |
To surely seal a shaft of a turning part projected downward from a bottom part of a hull and turnable around a vertical axial center. This sealing device 8 has a seal ring 25A for sealing sea water W, a seal ring 25D for sealing lubricat...
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JP2011025918A |
To provide a nozzle propeller for a vessel such as an inland navigation vessel and a tugboat which can increase speed compared with a known nozzle propeller, and can intensify a pulling force of a tow rope even if an engine output is the...
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JP2011025734A |
To achieve the energy-saving effect larger than the sum of the effect of each device by combining a plurality of kinds of energy-saving devices in a single-screw twin-rudder ship.A ship compound energy-saving propulsion device 10 provide...
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