A pile holding system is to be mounted on a deck of a vessel, e.g. for installation of a pile adapted to support an offshore wind turbine. The pile holding system is configured to support the pile in an upright position at a pile installation location next to the vessel. A vessel is provided with such a pile holder system. A method for installation of a pile and a pile holder are also disclosed.

A pile holding system is to be mounted on a deck of a vessel, e.g. for installation of a pile adapted to support an offshore wind turbine. The pile holding system is configured to support the pile in an upright position at a pile installation location next to the vessel. A vessel is provided with such a pile holder system. A method for installation of a pile and a pile holder are also disclosed.

The invention is related to boatbuilding and may be used in construction and modernisation of high-speed monohull motor seagoing boats, where a single hull is used, which is moving in a surfing on a water cushion mode. Stabilised hull of a monohull motor boat, which is using a surfing glide on a water cushion, with the deeply submerged displacement bearing blade, with a hull of a total width of not more than 50% of its length, which, in its lower part over its entire length, has a descending shape of its bottom surface in the direction bow-to-stern, where the bow is elevated up to the distance from the waterline, corresponding to at least 25% of the hull's width, and under the bow is a high wave-piercing stem. Wherein, in the front 40% of the hull's length, the bottom surface has a descending shape, which smoothly flows into the bottom surface of the stern part of the hull, and has an angle of descent in relation to the waterline at zero speed of at least 5 degrees, in the rear 60% of the hull's length, the bottom surface has a descending shape, and the angle of descent in relation to the waterline at zero speed of not more than 5 degrees, while it has an almost flat shape in its cross section, and is submerged by 70% or more of its length below the waterline, where the submerged part becomes the “surfing surface”, which is gliding, during the boat's movement, on a water cushion, and carrying not more than 70% of the boat's fully loaded weight. The hull is made with a longitudinally positioned located underneath the bottom surface, symmetrical with respect to the boat's centerline, and commensurate with its length, vertically oriented, deeply submerged displacement bearing blade of narrow shape and of low wave/hydrodynamic resistance; wherein the ratio of the length to the width of the bearing blade of at least 20 times, with the displacement of the bearing blade corresponding to 30-50% of the boat's fully loaded weight, and with its height (excluding the stem) of not less than 20% of the maximum width of the hull, wherein ensuring a deep submersion of the bottom edge of the bearing blade in relation to the waterline. The bearing blade is made with wave-piercing lines, with a high wave-piercing stem, reaching by its height the bow end of the bottom surface of the hull, with the sharp rear and front lines, and the smooth middle lines; and has a triangular cross section over its entire length, with the most acute angle at its bottom; and the maximum width of the bearing blade is located within 40-60% of its length, which determines the centre of the displacement of the bearing blade within 40-60% of its length, in its upper third. The controllable hull o

The present invention relates to the field of wave compensation equipment, and discloses a 6-Dof platform for wave compensation, comprising a soleplate, a 2R1T parallel unit, a 1R2T series unit and an upper platform. The soleplate is installed on a deck of a ship, the 2R1T parallel unit is installed on the soleplate, the 1R2T series unit is installed on the 2R1T parallel unit, and the upper platform is installed on the 1R2T series unit. The invention compensates 6-Dof motion of heave, roll, pitch, sway, surge and yaw of the ship under action of waves. The present invention has the advantages of simple structure, high carrying capacity, easy control and high precision in posture control.

The present invention relates to the field of wave compensation equipment, and discloses a 6-Dof platform for wave compensation, comprising a soleplate, a 2R1T parallel unit, a 1R2T series unit and an upper platform. The soleplate is installed on a deck of a ship, the 2R1T parallel unit is installed on the soleplate, the 1R2T series unit is installed on the 2R1T parallel unit, and the upper platform is installed on the 1R2T series unit. The invention compensates 6-Dof motion of heave, roll, pitch, sway, surge and yaw of the ship under action of waves. The present invention has the advantages of simple structure, high carrying capacity, easy control and high precision in posture control.

A method of monitoring accelerations on a vessel includes measuring acceleration on the vessel using one or more sensors. The one or more sensors are communicatively coupled to a computing unit. Real-time acceleration information representative of an acceleration on the vessel based at least in part on the measured acceleration from the one or more sensors is generated. Acceleration prediction information representative of predicted wave slam using the computing unit is generated. Using the acceleration prediction information, automatic control of trim, steering, or throttle controls of the vessel is performed in a fashion computed to reduce the effects of the predicted wave slam.

The present invention relates to an offshore wind turbine on a floating support (1) comprising either a rotor with a horizontal rotation axis (horizontal-axis wind turbine HAWT) or a rotor with a vertical rotation axis (vertical-axis wind turbine VAWT) with the rotor being mounted on a floating support having a principal axis. According to the invention, the principal axis of the floating support is offset by an angle α with respect to either the axis of a tower carrying the horizontal-axis rotor or to the rotation axis of the vertical-axis rotor.

The present invention relates to an offshore wind turbine on a floating support (1) comprising either a rotor with a horizontal rotation axis (horizontal-axis wind turbine HAWT) or a rotor with a vertical rotation axis (vertical-axis wind turbine VAWT) with the rotor being mounted on a floating support having a principal axis. According to the invention, the principal axis of the floating support is offset by an angle α with respect to either the axis of a tower carrying the horizontal-axis rotor or to the rotation axis of the vertical-axis rotor.

Various embodiments of a submerged sailing vessel are disclosed. Such a submerged sailing vessel may comprise a submersible hull assembly, a keel coupled to and extending upwards from hull assembly towards a water surface, and a wind-catching assembly coupled to and extending upwards into the air from the keel for propelling the submerged sailing vessel. The hull assembly and keel are submerged below the water surface as the vessel is propelled by the wind-catching assembly above the water surface.

Various embodiments of a submerged sailing vessel are disclosed. Such a submerged sailing vessel may comprise a submersible hull assembly, a keel coupled to and extending upwards from hull assembly towards a water surface, and a wind-catching assembly coupled to and extending upwards into the air from the keel for propelling the submerged sailing vessel. The hull assembly and keel are submerged below the water surface as the vessel is propelled by the wind-catching assembly above the water surface.