Abstract

Invention relates to a thruster assembly for a marine vessel including a body including a duct having a longitudinal axis, and a first end and a second end, a support structure for a propeller including a propeller shaft at a centre line of the duct, a propeller, positioned into the duct and being attached to the propeller shaft, wherein the propeller including at least three blades and a boss which is supported to the shaft, and further a circular rim to which radial ends of the propeller blades are attached, wherein a circumferential slot is provided, opening inside the duct between the first end and the second end, into which slot the circular rim is arranged to extend radially, and at least one gas inlet arranged to open into the slot. Invention relates also to a transverse tunnel thruster and a steerable azimuthing thruster provided with the thruster assembly.

IPC Classes  ?

• B63H 5/16 - Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recessesArrangements on vessels of propulsion elements directly acting on water of propellers with stationary water-guiding elementsMeans to prevent fouling of the propeller, e.g. guards, cages or screens
• B63H 11/08 - Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type

Abstract

Invention relates to a thruster assembly (10) for a marine vessel (1) comprising a body (12) comprising a duct (20) having a longitudinal axis (L), and a first end (20.1) and a second end (20.2), a support structure (14) for a propeller (16) comprising a propeller shaft (18) at a centre line of the duct (20), a propeller (16), positioned into the duct (20) and being attached to the propeller shaft (18), wherein the propeller (16) comprising at least three blades (22) and a boss (24) which is supported to the shaft (18), and further a circular rim (26) to which radial ends (22') of the propeller blades are attached, wherein a circumferential slot (28) is provided, opening inside the duct between the first end (20.1) and the second end (20.2), into which slot the circular rim (26) is arranged to extend radially, and at least one gas inlet (30) arranged to open into the slot (28). Invention relates also to a transverse tunnel thruster and a steerable azimuthing thruster provided with the thruster assembly.

IPC Classes  ?

• B63H 5/14 - Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purposes
• B63H 5/16 - Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recessesArrangements on vessels of propulsion elements directly acting on water of propellers with stationary water-guiding elementsMeans to prevent fouling of the propeller, e.g. guards, cages or screens
• B63H 1/16 - Propellers having a shrouding ring attached to blades
• B63H 1/18 - Propellers with means for diminishing cavitation, e.g. supercavitation
• B63H 25/46 - Steering or dynamic anchoring by jets

Abstract

A computer implemented method and apparatus for detecting an anomaly in a marine vessel data system, the method comprising: determining historical data based on sensor data of the marine vessel data system; providing the historical data as input to a neural network; generating predicted sensor data as output by the neural network; combining the predicted sensor data with actual data to provide error data, wherein the actual data is determined from the sensor data; receiving engine operational data; determining level of data deviation based on the engine operational data; and detecting the anomaly based on the error data and the level of data deviation.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• B63B 79/30 - Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
• G06N 3/08 - Learning methods

Abstract

A computer implemented method and apparatus for detecting an anomaly in a marine vessel data system, comprising: receiving data from a plurality of sensors operationally arranged to the marine vessel to provide sensor data; maintaining the sensor data within a data storage system; determining historical data based on the sensor data of the data storage system; providing the historical data as input to a neural network; generating predicted data for a subset of the plurality of sensors as output by the neural network; combining the predicted data with actual data for the subset of the plurality of sensors to provide error data, wherein the actual data is determined from the sensor data of the data storage system based on association to the subset of the plurality of sensors; and detecting the anomaly based on the error data.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• B63B 79/30 - Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
• G06N 3/08 - Learning methods

Abstract

The present invention relates to the manufacture of a propeller blade assembly, and especially to the attachment of a composite blade (30) to a root block assembly (12). An essential feature of the method of manufacture is providing the foot part (34) of the blade (30) with a wedge shaped cavity (38), and arranging a compressive mould insert (44) in the cavity (38) for subjecting reinforcement layers (32) to compression while curing the blade (30) in the mould.

IPC Classes  ?

• F03D 1/06 - Rotors
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F01D 5/28 - Selecting particular materialsMeasures against erosion or corrosion
• B64C 11/20 - Constructional features
• B29C 53/02 - Bending or folding
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

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 assembly and at its upper end to an upper support structure by an upper support assembly. The lifting spindle is provided at its both ends with a locking member for such a connection to the support structures such that each end of the lifting spindle may freely move in an axial direction away from the opposite end of the lifting spindle.

IPC Classes  ?

• F16H 25/20 - Screw mechanisms
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction
• B63H 25/42 - Steering or dynamic anchoring by propulsive elementsSteering or dynamic anchoring by propellers used therefor onlySteering or dynamic anchoring by rudders carrying propellers
• B63H 25/46 - Steering or dynamic anchoring by jets

Abstract

The present invention discusses an inboard demountable retractable thruster for a marine vessel, the thruster (8) comprising a propeller (12), a thruster body (14), means (18, 22, 54) for driving and steering the propeller (12), means for moving the propeller (12) in vertical direction between its top and bottom positions,means (24) for guiding the vertical movement of the propeller (12), and a slide frame (32) supporting the means (18, 22, 54) for driving and steering the propeller, the slide frame (32) being movable along the vertical movement guiding means (24), the vertical movement guiding means (24) being fastened to a frame, the frame comprises an upper frame (28) and a lower frame (30) between which the vertical movement guiding means (24) are arranged, wherein the lower frame is a thruster basin (30),the thruster basin (30), when in operation, housing at least partially the slide frame (32) and the means (22, 4) for driving and steering the propeller (12) arranged in connection therewith.

IPC Classes  ?

• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction

Abstract

The tunnel thruster (10) of a marine vessel has a propeller (16) at the central part of the tunnel (12) and adjustable nozzles (28, 34) at both ends of the tunnel (12).

IPC Classes  ?

• B63H 25/42 - Steering or dynamic anchoring by propulsive elementsSteering or dynamic anchoring by propellers used therefor onlySteering or dynamic anchoring by rudders carrying propellers
• B63H 11/10 - Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof

Abstract

The present invention discusses a lifting spindle arrangement for a retractable thruster unit of a marine vessel, the lifting spindle (28) having a lower end and an upper end and being supported at its lower end to a lower support structure (2) by means of a lower support assembly (40) and at its upper end to an upper support structure (4) by means of an upper support assembly (70), wherein the lifting spindle (28) is provided at its both ends with a locking member for such a connection to the support structures (2, 4) that each end of the lifting spindle (28) may freely move in an axial direction away from the opposite end of the lifting spindle (28).

IPC Classes  ?

• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction

Abstract

The present invention relates to a novel propeller for a marine vessel and a method of installing the hub cap to the hub. More specifically, the present invention relates to hub caps for use in connection with both fixed pitch and controllable pitch propellers. The propeller of the invention comprises a hub with a hub body (42), propeller blades, and a hub cap (66), the hub cap (66) having an outer surface provided with fins, and being fastened to the aft end of the hub body (42) by means of a connection ring (72).

IPC Classes  ?

• B63H 3/00 - Propeller-blade pitch changing
• B63H 1/28 - Other means for improving propeller efficiency

Abstract

The present disclosure discusses a method of and an arrangement for the lubrication of a controllable pitch propeller of a marine vessel. The lubrication is based on continuous lubricant circulation from the hydraulic powerpack to the hub and back to the oil tank, when the marine vessel is sailing ahead with propeller blades locked in a desired position. The lubrication is performed by maintaining, at least when the propeller blades are locked in a desired position, a pressure difference between the astern oil chamber and the lubricant chamber for circulating lubricant from the astern oil chamber via the lubricant chamber to the oil tank.

IPC Classes  ?

• B63H 3/08 - Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type

Abstract

The present invention relates to a method of maneuvering a marine vessel, the marine vessel having a hull with a longitudinal centreline and at least two tunnel thrusters arranged in the hull at right angles to the longitudinal centreline, each tunnel thruster having a fixed pitch propeller with a rotational speed in a preferred rotational direction for delivering a positive thrust, the positive thrust of a first tunnel thruster of the at least two tunnel thrusters having a direction opposite to that of a second tunnel thruster of the at least two tunnel thrusters, the method comprising the steps of, delivering, when no maneuvering action is desired, a constant equal positive thrust by both tunnel thrusters, and increasing, when a maneuvering action is desired, the rotational speed of the first tunnel thruster to increase the positive thrust of the first tunnel thruster.

IPC Classes  ?

• B63H 25/42 - Steering or dynamic anchoring by propulsive elementsSteering or dynamic anchoring by propellers used therefor onlySteering or dynamic anchoring by rudders carrying propellers

Abstract

The present invention discusses a method of and an arrangement for the lubrication of a controllable pitch propeller of a marine vessel. The lubrication is based on continuous lubricant circulation from the hydraulic powerpack to the hub and back to the oil tank, when the marine vessel is sailing ahead with propeller blades locked in a desired position. The lubrication is performed by maintaining, at least when the propeller blades are locked in a desired position, a pressure difference between the astern oil chamber (56) and the lubricant chamber (82) for circulating lubricant from the astern oil chamber (56) via the lubricant chamber (82) to the oil tank.

IPC Classes  ?

• B63H 3/08 - Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid

Abstract

The present invention relates to a sealing arrangement for use when mounting a thruster (60) in a well box (60) attached to a hull of a marine vessel. The well box (60) has an axis (A), a bottom flange (64), a top flange (68), an annular wall (66) therebetween and hoisting pipes (70) fastened parallel with the axis (A) to the bottom flange (64) radially outside the annular wall (66). The thruster (62) has a hub (80) with a nozzle (82) and a propeller (84), and a support housing (86) fastened to the hub (80) and provided with a mounting flange (88) having an axis (A). Both the well box (60) and the mounting flange (88) have at least one surface (64', 74'; 90', 94) acting as a sealing surface between the well box (60) and the thruster (62). At least one of the surfaces (64', 74'; 90', 94) has a groove for a seal (132, 134) for preventing water from entering the well box (60). The well box (60) further has a rotationally symmetric wall (66) with an internal guide surface (76) and the mounting flange (88) of the thruster (62) has an axially extending rotationally symmetric part (90) provided with an outer surface (98) having means (102, 104; 130) for sealing the mounting flange (88) in relation to the well box (60).

IPC Classes  ?

• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction
• B63B 9/00 - Methods of designing, building, maintaining, converting, refitting, repairing, or determining properties of, vessels, not otherwise provided for
• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for

Abstract

A method of handling a unit arranged in a watertight hoisting chamber opening into a hull of a vessel is provided. The unit is adapted to extend into the water below the vessel when installed at its mounted position. The unit is clamped in its mounted position by clamping means and releasing fixing means fix the unit into its mounted position while holding the unit clamped in position. The hoisting chamber is at least partly flooded, the clamping means are simultaneously released and the unit lifted from its mounted position by applying a lifting force to the unit by lifting devices, and the unit is hoisted away from the hoisting chamber.

IPC Classes  ?

• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction
• B63B 9/00 - Methods of designing, building, maintaining, converting, refitting, repairing, or determining properties of, vessels, not otherwise provided for

Abstract

A closing cover for closing an opening in a hull of a marine vessel, includes a first part and a second part. The second part has a cylindrical periphery wall and a water tight inner section bordered by the periphery wall and the first part has a flange plate portion extending radially over the periphery wall of the second part, in which the first part and the second part are removably attached to each other. The second part is provided with a sealing system and attaching pins at its outer cylindrical surface.

IPC Classes  ?

• B63B 43/16 - Temporary equipment for stopping leaks, e.g. collision mats
• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 25/42 - Steering or dynamic anchoring by propulsive elementsSteering or dynamic anchoring by propellers used therefor onlySteering or dynamic anchoring by rudders carrying propellers

Abstract

An assembly in a marine vessel includes a unit arranged in a water tight chamber opening in a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when at a mounted position. A connection path between an inside and an outside of the vessel is provided with a sealing system and the sealing system divides the connection path into an outside connection path portion and an inside connection path portion. The assembly includes a gas inlet system opening to the outside connection path portion.

IPC Classes  ?

• B63B 1/38 - Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers
• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction
• B63H 21/36 - Covers or casing arranged to protect plant or unit from marine environment
• B63H 1/28 - Other means for improving propeller efficiency
• B63B 59/04 - Preventing hull fouling

Abstract

A pitch angle indicator system indicates a pitch angle of blades (201) of a propeller of a marine propulsion unit. A mechanical link (202) couples at least one of said blades (201) to a first end of a first rod (211). An indicator (216) is coupled to a second end of said first rod (211). The mechanical link (202) is configured to convert a change in said pitch angle into a rotation of said first rod (211) about its longitudinal axis (204). Said indicator (216) is configured to provide an indication of the amount of rotation of said first rod (211) about said longitudinal axis (204).

IPC Classes  ?

• B63H 3/00 - Propeller-blade pitch changing

Abstract

Invention relates a closing cover for closing an opening in a hull of a marine vessel, comprising a first part (601) and a second part (602), the second part comprising a cylindrical periphery wall (612) and a water tight inner section (620) bordered by the periphery wall and the first part comprising a flange plate portion (24) extending radially over the periphery wall of the second part, in which the first part (601) and the second part (602) are removably attached to each other; and the second part (602) is provided with a sealing system (604) and an attaching means at its outer cylindrical surface.

IPC Classes  ?

• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction

Abstract

An assembly in a marine vessel comprising a unit (2) arranged in a water tight chamber opening in a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when at its mounted position, which assembly comprises a connection path (630) between in inside and outside of the vessel which connection path is provided with a sealing system (604) and which sealing system (604) divides the connection path (630) to outside connection path portion (630') and inside connection path portion (630''). The assembly comprises a gas inlet system opening (640, 640') to the outside connection path portion (630').

IPC Classes  ?

• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction

Abstract

The invention relates to a method of handling a unit arranged in a watertight hoisting chamber opening into a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when installed at its mounted position, the method comprising steps of clamping the unit in its mounted position by clamping means, releasing fixing means fixing the unit into its mounted position while holding the unit clamped in position, at least partly flooding the hoisting chamber, and simultaneously releasing the clamping means and lifting the unit from its mounted position by applying lifting force to the unit by lifting devices, and hoisting the unit away from the hoisting chamber. The invention relates also to installation of the unit and an assembly in a marine vessel.

IPC Classes  ?

• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 5/125 - Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction

Goods & Services

Engines, other than for land vehicles, propulsion mechanisms and machines, in particular for ships, and parts for the above-mentioned products not included in other classes. Propellers for ships. Installation, maintenance and repair of installations and machines for ship propulsion and ship propellers; consulting services relating to installation, maintenance and repair of ship propulsion mechanisms and machines.

Goods & Services

Hélices de vaisseaux fabriquées d'un alliage de cuivre, nickel et aluminium.