An unmanned vessel system can include a hull system configured to provide buoyancy, one or more seismic sources configured to generate seismic energy, and a deployment apparatus configured to deploy the seismic sources from the hull system to a water body or water column. A control system can be configured to operate the deployment apparatus, in order to deploy the one or more seismic sources so that the seismic energy propagates through the water column. A compressed air source can be provided on board the unmanned vessel system, with a source line configured to provide compressed air to the seismic sources.

The patent discloses a multihull watercraft with a unique hull configuration providing numerous benefits. Passenger cabins are enclosed within a separate upper hull, which allows the accommodation space and the float hulls to be independently optimized. The new configuration also provides reduced windage, and creates additional deck space for easier boarding, recreational use, and safer access to shore craft.

The patent discloses a multihull watercraft with a unique hull configuration providing numerous benefits. Passenger cabins are enclosed within a separate upper hull, which allows the accommodation space and the float hulls to be independently optimized. The new configuration also provides reduced windage, and creates additional deck space for easier boarding, recreational use, and safer access to shore craft.

An electrohydraulic device includes an extender which is arranged to be actuated by hydraulic fluid, and a rotor of an electric motor, the rotor being arranged to rotate about a part of the extender. The rotor may have an annular body which encircles or surrounds part of the extender. There is also described a related method of use and a marine vessel or platform where the device may be applied.

An electrohydraulic device includes an extender which is arranged to be actuated by hydraulic fluid, and a rotor of an electric motor, the rotor being arranged to rotate about a part of the extender. The rotor may have an annular body which encircles or surrounds part of the extender. There is also described a related method of use and a marine vessel or platform where the device may be applied.

A recovery apparatus and a recovery method is disclosed for recovering a watercraft, in particular for recovering a boat on board a mother ship. A frame actuator pulls a frame of the recovery apparatus relative to a carrying structure from a recovering position into a parked position. A chain drive moves a chain relative to the frame along a closed curve. The chain comprises at least one driver. A watercraft to be recovered is connected temporarily to the chain and is pulled out of the water by the movement of the frame relative to the carrying structure and by the movement of the chain having the drivers relative to the frame.

A recovery apparatus and a recovery method is disclosed for recovering a watercraft, in particular for recovering a boat on board a mother ship. A frame actuator pulls a frame of the recovery apparatus relative to a carrying structure from a recovering position into a parked position. A chain drive moves a chain relative to the frame along a closed curve. The chain comprises at least one driver. A watercraft to be recovered is connected temporarily to the chain and is pulled out of the water by the movement of the frame relative to the carrying structure and by the movement of the chain having the drivers relative to the frame.

The invention relates to a holding device for fastening, to the stem area of a ship, a ship's boat or an additional component to be detachably carried along, which device comprises a plurality of arms which have a hook-shaped coupling and are rigidly or detachably connected to the ship's boat or additional component, and a plurality of receiving portions which comprise at least one coupling shaft and are mounted on the stem or on an additional part of the ship permanently installed on the stem in such a way that the arms are hooked into the coupling shaft by the hook-shaped coupling and by a rotation of the arm or the receiving portion about the coupling shaft are locked in place when a defined angle of rotation is reached.

The invention relates to a holding device for fastening, to the stem area of a ship, a ship's boat or an additional component to be detachably carried along, which device comprises a plurality of arms which have a hook-shaped coupling and are rigidly or detachably connected to the ship's boat or additional component, and a plurality of receiving portions which comprise at least one coupling shaft and are mounted on the stem or on an additional part of the ship permanently installed on the stem in such a way that the arms are hooked into the coupling shaft by the hook-shaped coupling and by a rotation of the arm or the receiving portion about the coupling shaft are locked in place when a defined angle of rotation is reached.

Marine lift apparatus for raising and lowering vessels, platforms, and cargo are disclosed. A lift apparatus comprises a multi-component structure capable of movement, at least one flexible member, and at least one piston device. In some aspects, marine lift apparatus facilitates the level raising, lowering, and storing of vessels, platforms, and cargo. Lift apparatus mountable onto multi-hull vessels, such as catamarans, configured for lifting a combination swim and dinghy platform are also disclosed.