A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses and a plurality of power converters. The bus-tie converter includes at least two converter legs coupled by at least one inductor. Each converter leg includes a first branch connected with a snubber circuit by an intermediate switching device. The first branch includes two outer switching devices and at least one inner switching device connected between the two outer switching devices. The snubber circuit includes a combination of a diode, a resistor and a capacitor. A controller controls the operation of the plurality of power converters and the at least one bus-tie converter.

A propulsion system is described that includes an electrical bus, a generator configured to provide electrical power to the electrical bus, a plurality of propulsory configured to provide thrust by simultaneously being driven by the electrical power at the electrical bus, and a controller. The controller is configured to synchronize a rotational speed of an individual propulsor from the plurality of propulsory with a rotational speed of the generator after the individual propulsor has become unsynchronized with the rotational speed of the generator by controlling at least one of the rotational speed of the generator, nozzle area of the individual propulsor, or a pitch angle of the individual propulsor.

A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses; wherein DC buses which do not have same DC voltage are coupled to each other via at least one DC to DC converter. Furthermore, at least one energy source is coupled to at least one DC bus via a power electronic converter.

A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses; wherein DC buses which do not have same DC voltage are coupled to each other via at least one DC to DC converter. Furthermore, at least one energy source is coupled to at least one DC bus via a power electronic converter.

An enhanced system and various methods for safe and convenient deployment and retraction of boat fenders, comprising a system for stowing a boat fender in a fender receptacle, the receptacle having an opening for threading through a line, the line being attached to the fender, the line operable to pull up the fender into the receptacle through a second opening at the bottom of the receptacle, the receptacle being located within the rail, hull, or attached thereto, and being attached to a hinge, operated either mechanically or manually, to enable unobstructed deployment of the fenders.

An enhanced system and various methods for safe and convenient deployment and retraction of boat fenders, comprising a system for stowing a boat fender in a fender receptacle, the receptacle having an opening for threading through a line, the line being attached to the fender, the line operable to pull up the fender into the receptacle through a second opening at the bottom of the receptacle, the receptacle being located within the rail, hull, or attached thereto, and being attached to a hinge, operated either mechanically or manually, to enable unobstructed deployment of the fenders.

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 convertible bimini top for a marine vessel has a cover frame, a support arm for supporting the cover frame above the marine vessel, the support arm having a lower end configured to be pivotably coupled to the marine vessel and an upper end pivotably coupled to the cover frame, a lower actuator coupled to the lower end of the support arm, the lower actuator being configured to pivot the support arm relative to the marine vessel to move the cover frame up and down relative to the marine vessel, and an upper actuator coupled to the upper end of the support arm and to the cover frame, the upper actuator being configured to pivot the cover frame relative to the support arm.

A convertible bimini top for a marine vessel has a cover frame, a support arm for supporting the cover frame above the marine vessel, the support arm having a lower end configured to be pivotably coupled to the marine vessel and an upper end pivotably coupled to the cover frame, a lower actuator coupled to the lower end of the support arm, the lower actuator being configured to pivot the support arm relative to the marine vessel to move the cover frame up and down relative to the marine vessel, and an upper actuator coupled to the upper end of the support arm and to the cover frame, the upper actuator being configured to pivot the cover frame relative to the support arm.

A propulsion system is described that includes an electrical bus, a generator configured to provide electrical power to the electrical bus, a plurality of propulsors configured to provide thrust by simultaneously being driven by the electrical power at the electrical bus, and a controller. The controller is configured to synchronize a rotational speed of an individual propulsor from the plurality of propulsors with a rotational speed of the generator after the individual propulsor has become unsynchronized with the rotational speed of the generator by controlling at least one of the rotational speed of the generator, nozzle area of the individual propulsor, or a pitch angle of the individual propulsor.