Abstract: A gyro stabilizer includes a rotor arranged to rotate about a spin axis, and a stator, wherein the rotor and the stator include rotor and stator assemblies, respectively. The rotor assembly is arranged radially outside the stator assembly with respect to the spin axis, wherein the rotor and/or stator assemblies include magnets with magnetic axis in the direction of the spin axis.

Abstract: A gyro stabilizer includes a rotor arranged to rotate about a spin axis, and a stator, wherein the rotor and the stator include rotor and stator assemblies, respectively. The rotor assembly is arranged radially outside the stator assembly with respect to the spin axis, wherein the rotor and/or stator assemblies include magnets with magnetic axis in the direction of the spin axis.

Abstract: A boat stabilizer system includes a first gyro stabilizer configured to be arranged inside a hull, a first fin stabilizer including a fin configured to be arranged outside the hull and move relative the hull, and a power transmission interconnecting the first gyro stabilizer and the first fin stabilizer. The power transmission is arranged to transfer energy derived from precession torque of the first gyro stabilizer to the first fin stabilizer to actuate the fin.

Abstract: A stabilizer device for a watercraft with a hull. The stabilizer device includes a fin blade with a fin base, a fin tip, a leading edge, and a trailing edge, wherein a blade forward direction (fb) is defined from the trailing edge to the leading edge at the fin base, wherein the fin blade comprises a first fin connection element connected to the fin base in a first connection point a hull element arranged to be fixed to the hull with a hull forward direction (fh) in a forward direction of the hull, and a fin blade displacement portion connected to the first fin connection element and the hull element and arranged for displacing the first fin connection point a first displacement, in parallel with a lower surface of the hull, and perpendicular to the hull forward direction (fh).

Abstract: A stabilizer device for a watercraft with a hull. The stabilizer device includes a fin blade with a fin base, a fin tip, a leading edge, and a trailing edge, wherein a blade forward direction (fb) is defined from the trailing edge to the leading edge at the fin base, wherein the fin blade comprises a first fin connection element connected to the fin base in a first connection point a hull element arranged to be fixed to the hull with a hull forward direction (fh) in a forward direction of the hull, and a fin blade displacement portion connected to the first fin connection element and the hull element and arranged for displacing the first fin connection point a first displacement, in parallel with a lower surface of the hull, and perpendicular to the hull forward direction (fh).

Abstract: A stabilizer fin and an active stabilizer system for a watercraft with a hull includes a fin base arranged to be pivotally mounted to the hull with a pivot and to pivot about a pivot axis, a fin tip, a leading edge, and a trailing edge. A forward direction of the stabilizer fin is defined from the trailing edge to the leading edge at the fin base, and the trailing edge at the fin tip is bent away from a plane defined by the forward direction and the pivot axis, to give the trailing edge a concave profile in a lateral direction perpendicular to the plane.

Abstract: A method of stabilizing a riser includes applying an oscillating force to the riser, using one or more thrust units on the rise, so as to counteract oscillating movement of the rise, preferably having a first component oscillating at a period between 3 and 20 seconds and a second component oscillating at a period between 1 and 5 minutes, where the thrust units may be positioned at antinodes of the oscillating movement and preferably each comprise three pairs of thrusters respectively configured to provide thrust in three evenly spaced directions.

Abstract: A boat maneuvering joystick, system and method for maneuvering a boat. The joystick has a base with sensors arranged for detecting a position of the maneuvering stick. The maneuvering stick comprises a first bidirectional control knob and a second bidirectional control knob, arranged movably relative each other. The joystick comprises first control sensors detecting a first position of the first bidirectional control knob and second control sensors detecting a second position of the stern control knob. The system comprises a maneuvering control unit comprising a bow thruster output terminal and a propulsion output terminal. The maneuvering control unit is arranged for receiving position, first and second control signals and calculating a bow thruster signal and a propulsion signal. A dual mode joystick is also shown.

Abstract: A stabilizer fin and an active stabilizer system for a watercraft with a hull includes a fin base arranged to be pivotally mounted to the hull with a pivot and to pivot about a pivot axis, a fin tip, a leading edge, and a trailing edge. A forward direction of the stabilizer fin is defined from the trailing edge to the leading edge at the fin base, and the trailing edge at the fin tip is bent away from a plane defined by the forward direction and the pivot axis, to give the trailing edge a concave profile in a lateral direction perpendicular to the plane.

Abstract: A boat manoeuvring joystick, system and method for manoeuvring a boat. The joystick has a base with sensors arranged for detecting a position of the manoeuvring stick. The manoeuvring stick comprises a first bidirectional control knob and a second bidirectional control knob, arranged movably relative each other. The joystick comprises first control sensors detecting a first position of the first bidirectional control knob and second control sensors detecting a second position of the stern control knob. The system comprises a manoeuvring control unit comprising a bow thruster output terminal and a propulsion output terminal. The manoeuvring control unit is arranged for receiving position, first and second control signals and calculating a bow thruster signal and a propulsion signal. A dual mode joystick is also shown.

Abstract: There is described a method for controlling an electric motor comprising an operating relay having relay windings with respective first and second relay contacts and a control means, which motor via current conductors is connected to said relay and a power source wherein an operator by using said control means controls the application of current to the motor armature or rotor and field coil(s) or field magnet(s), monitoring devices are provided which sense indicating parameters that are compared with respective corresponding reference values in a safety function unit in order to determine whether the contacts of the operating relay are mistakenly in the on position, and if one of the contacts is the on position, ensures the switching on of at least the other one of the relay contacts so that the current application to the motor is interrupted and the motor stops.

Abstract: There is described a method for controlling an electric motor comprising an operating relay having relay windings with respective first and second relay contacts and a control means, which motor via current conductors is connected to said relay and a power source wherein an operator by using said control means controls the application of current to the motor armature or rotor and field coil(s) or field magnet(s), monitoring devices are provided which sense indicating parameters that are compared with respective corresponding reference values in a safety function unit in order to determine whether the contacts of the operating relay are mistakenly in the on position, and if one of the contacts is the on position, ensures the switching on of at least the other one of the relay contacts so that the current application to the motor is interrupted and the motor stops.

Abstract: A thuster control unit which in general comprises a base plate 100, a switch panel 200 mounted on said base plate, and a boat shaped, or navicular, control knob 500 mounted on the base plate such that it is displaceable over the switch panel. The panel is equipped with switches, such as embedded switches, for controlling bow and stem thrusters, and/or any other propulsion unit. The control knob is equipped actuator pegs 425, biased downwards, each thus transmitting a force to the switch panel. In a non-actuated state, the navicular control knob remains in a neutral position in which position no one of the embedded boat manoeuvring control switches are operated. The forward and aft actuator pegs thus activate the forward and aft boat manoeuvring control switches respectively in a manner corresponding with a selective displacement of the navicular control knob. The boat shaped control knob provides a novel, efficient and reliable means for a combined control of any boat propulsion system.