According to one or more embodiments disclosed herein is a method of transporting equipment between sea-surface and seafloor by providing a structure with a subsea equipment package mounted thereon. The structure is used for installation and recovery in a subsea environment by changing the buoyancy of the structure or ballasting the structure to effect a controlled sinking motion.

An arrangement, a system and a method relating to a well boat- and service vessel (1) for transporting or storing fish or other aquatic organisms. There are provided, inter alia, a well boat- and service vessel (1) that includes a self-floating, exchangeable well unit (2), a propulsion unit (3), wherein the propulsion unit includes propulsion elements (4), steering and positioning elements, a dock (5) for the well unit, positioning and attachment elements for positioning and securing the well unit (2) in the dock (5).

An arrangement, a system and a method relating to a well boat- and service vessel (1) for transporting or storing fish or other aquatic organisms. There are provided, inter alia, a well boat- and service vessel (1) that includes a self-floating, exchangeable well unit (2), a propulsion unit (3), wherein the propulsion unit includes propulsion elements (4), steering and positioning elements, a dock (5) for the well unit, positioning and attachment elements for positioning and securing the well unit (2) in the dock (5).

The present disclosure provides apparatus and methods that improves the speed, functionality, and safety of wakeboat ballasting operations. A ballasting apparatus for wakeboats is provided, comprising a wakeboat with a hull and an engine; a hydraulic pump, mechanically driven by the engine; a hydraulic motor, powered by the hydraulic pump; a ballast compartment; and a ballast pump, powered by the hydraulic motor. A ballasting apparatus for wakeboats is provided, comprising a wakeboat with a hull and an engine; a ballast compartment; and a hydraulic ballast pump, the ballast pump configured to be powered by the engine, the ballast outlet and/or inlet of the ballast pump connected to the ballast compartment, the ballast pump configured to pump ballast in and/or out of the ballast compartment. A ballast pump priming system for wakeboats is provided, comprising a wakeboat with a hull and an engine; a ballast pump on the wakeboat; a fitting on the ballast pump which permits water to be introduced into the housing of the ballast pump; and a source of pressurized water, the pressurized water being fluidly connected to the fitting, the pressurized water thus flowing into the housing of the ballast pump.

A life raft may include a base having a first side and a second side. The life raft may also include a first canopy coupled to the first side of the base and configured to extend across the first side of the base to form a first chamber defined between the first side of the base and the first canopy. The life raft may further include a second canopy coupled to the second side of the base and configured to extend across the second side of the base to form a second chamber defined between the second side of the base and the second canopy. At least one of the first canopy and the second canopy may define a first plurality of fill ports. The at least one of the first canopy and the second canopy is a bottom canopy configured to extend below the life raft.

A life raft may include a base having a first side and a second side. The life raft may also include a first canopy coupled to the first side of the base and configured to extend across the first side of the base to form a first chamber defined between the first side of the base and the first canopy. The life raft may further include a second canopy coupled to the second side of the base and configured to extend across the second side of the base to form a second chamber defined between the second side of the base and the second canopy. At least one of the first canopy and the second canopy may define a first plurality of fill ports. The at least one of the first canopy and the second canopy is a bottom canopy configured to extend below the life raft.

A semi-submersible support platform and a positioning method thereof are disclosed. The semi-submersible support platform, used for operations at sea after sailed to a certain position of a sea surface, includes an upper deck and a lower pontoon. The upper deck and the lower pontoon are connected by a plurality of upright columns. Each upright column is provided with a support leg that is longitudinally inserted through the upright column. The lower pontoon has a plurality of chambers for receiving water therein. The support leg has a compartment for receiving water therein. Each upright column includes a leveling mechanism therein. When the support leg sinks to reach the seabed, the leveling mechanism in each upright column is combined with the support leg to support the support leg. The leveling mechanism can drive the upper deck to move up or down along the support leg.

A Method and Apparatus for Planing Boat Ballast System have been disclosed. By using ballast forward of a transverse step forward of the stem and by using a ballast opening in or at a riser of the transverse step, enhanced stability is possible with protection from flooding and with efficiency of ballast admission and release, simplicity of practice, and ease and safety of inspection and cleaning

A Method and Apparatus for Planing Boat Ballast System have been disclosed. By using ballast forward of a transverse step forward of the stem and by using a ballast opening in or at a riser of the transverse step, enhanced stability is possible with protection from flooding and with efficiency of ballast admission and release, simplicity of practice, and ease and safety of inspection and cleaning

The present invention relates to methods, apparatus and computer program products for coordinating the control of a floating wind turbine (101) between a wind turbine controller (111) and a platform controller (110). One or more wind turbine control systems and/or one or more platform control systems may be altered based on said coordinated control of said floating wind turbine (101).