A hull is for a vessel and includes an elongated body rotatably connected to the vessel and a first end portion and a second end portion. The longitudinal axis of the elongated body substantially coincides with the longitudinal axis of the vessel and the elongated body is formed with a helical shape at least in a portion. The helical portion of the elongated body is provided with a star-shaped cross section.

Disclosed is a system and method for regenerating and distributing energy, such as employed on a vessel or floating offshore installation, the system including a first power distribution system, a second power distribution system electrically isolated from the first power distribution system, and a flywheel mechanically connected to both the first and second power distribution systems. Each of the first and second power distribution systems may include a motor/generator mechanically connected to the flywheel and a drive module electrically connected to its respective motor/generator. The flywheel drive modules may be connected to a common flywheel control module that includes a control algorithm for operating the system.

Embodiments of the disclosure are drawn to apparatuses and methods for packaging and distributing a marine energy storage system. Battery packs including one or more battery cells and a compliant layer enclosed in a sealed housing are disclosed. Vessel hulls with battery packs structurally integrated are disclosed. Vessel hulls with battery packs mounted to an inner surface of an outer hull are disclosed. Vessel hulls including compartments for inserting battery packs are disclosed. Vessel hulls including battery packs mounted in a ballast of the hull are disclosed.

Disclosed is a system and method for regenerating and distributing energy, such as employed on a vessel or floating offshore installation, the system including a first power distribution system, a second power distribution system electrically isolated from the first power distribution system, and a flywheel mechanically connected to both the first and second power distribution systems. Each of the first and second power distribution systems may include a motor/generator mechanically connected to the flywheel and a drive module electrically connected to its respective motor/generator. The flywheel drive modules may be connected to a common flywheel control module that includes a control algorithm for operating the system.

A high reliability vessel is provided with redundancy zones, and an improved system for a high reliability vessel that overcomes complexities in the prior art and solves the problem of improved reliability. The vessel comprises a plurality of redundancy zones, a thruster system comprising at least two thrusters to create transversal thrust, and a main power supply system comprising a generator system, and a main electrical distribution system comprising a switchboard system. The vessel further comprises an energy storage system comprising a plurality of energy storage subsystems, wherein at least one of the thrusters with an operatively connected energy storage subsystem is located in a first redundancy zone, and another of the thrusters and the generator system is located outside the first redundancy zone.

Embodiments of the disclosure are drawn to apparatuses and methods for packaging and distributing a marine energy storage system. Battery packs including one or more battery cells and a compliant layer enclosed in a sealed housing are disclosed. Vessel hulls with battery packs structurally integrated are disclosed. Vessel hulls with battery packs mounted to an inner surface of an outer hull are disclosed. Vessel hulls including compartments for inserting battery packs are disclosed. Vessel hulls including battery packs mounted in a ballast of the hull are disclosed.

A redundant steering system for watercraft that transfers rudder control to an electronic steering system when a hydraulic steering system either fails or is under repair. The electronic steering system utilizes either a fueled generator or a battery or series of batteries to power electric steering and flanking motors that serve control the angular position of the rudders.

A DC power distribution system has power sources, a DC power distribution bus with DC bus sections. The system has power switching assemblies to couple one of the DC bus sections to another and a system controller. An inverter is connected to one of the power switching assemblies to supply a consumer. The first and second terminals are electrically coupled to first and second bus sections. First and second semiconductor devices between the terminals control current flow and there is a current connection from each terminal to a power switching assembly controller for providing an indication of current. A control signal line is connected between the power switching assembly controller and each semiconductor device provides a signal to the semiconductor devices to control the current flow and an inverter coupler couples each current connection to the inverter. The inverter coupler has a feed from each current connection to the inverter.

A redundant steering system for watercraft that transfers rudder control to an electronic steering system when a hydraulic steering system either fails or is under repair. The electronic steering system utilizes either a fueled generator or a battery or series of batteries to power electric steering and flanking motors that serve control the angular position of the rudders.

A safety system for an offshore wind turbine supported by a floating foundation provided. The floating foundation being secured to a plurality of anchors at a seabed by a corresponding plurality of mooring lines. The safety system includes a safety controller and at least one conductive wire per mooring line, each conductive wire being configured to extend from the safety controller along a mooring line to the corresponding anchor at the seabed and back to the safety controller. The safety controller is configured to determine whether each of the conductive wires is intact or broken.