A submarine vehicle may include a storage area for storing loads. The submarine vehicle may further include a pressure hull. The submarine vehicle is configured to pick loads up from a seabed and/or set loads down on the seabed. The storage area may be positioned outside the pressure hull and, in some examples, between numerous pressure hulls. Further, the storage area may include a lower hatch disposed on an underside of the pressure hull or an upper hatch disposed on a top side of the pressure hull. Some submarine vehicles may include a load transporting system for picking the load up from the seabed, setting the load down on the seabed, and/or conveying the load within the storage area.

A submarine vehicle may include a storage area for storing loads. The submarine vehicle may further include a pressure hull. The submarine vehicle is configured to pick loads up from a seabed and/or set loads down on the seabed. The storage area may be positioned outside the pressure hull and, in some examples, between numerous pressure hulls. Further, the storage area may include a lower hatch disposed on an underside of the pressure hull or an upper hatch disposed on a top side of the pressure hull. Some submarine vehicles may include a load transporting system for picking the load up from the seabed, setting the load down on the seabed, and/or conveying the load within the storage area.

The present invention relates to a marine structure comprising a launch and recovery system for a submersible vehicle, and methods of operating the marine structure. The system comprises: a docking receiver, a towing head comprising a locking mechanism and being connectable to the docking receiver (13), a towing arrangement adapted to mechanically connect the towing head to the marine structure and being adapted to control the distance between the towing head and the docking receiver, and a lifting device connected to the docking receiver and being adapted to move the docking receiver relative to the marine structure. The lifting device can arrange the docking receiver in a towing head receiving and/or releasing position in which the docking receiver: (i) is completely submerged into the body of water, and (ii) is prevented from moving relative to the marine structure.

The present invention relates to a marine structure comprising a launch and recovery system for a submersible vehicle, and methods of operating the marine structure. The system comprises: a docking receiver, a towing head comprising a locking mechanism and being connectable to the docking receiver (13), a towing arrangement adapted to mechanically connect the towing head to the marine structure and being adapted to control the distance between the towing head and the docking receiver, and a lifting device connected to the docking receiver and being adapted to move the docking receiver relative to the marine structure. The lifting device can arrange the docking receiver in a towing head receiving and/or releasing position in which the docking receiver: (i) is completely submerged into the body of water, and (ii) is prevented from moving relative to the marine structure.

The method of supporting and lowering a subsea package load on an umbilical from the deck of an offshore service vessel to a subsea work location including providing a reel to store the umbilical on the deck which is not capable of sustaining the maximum load, providing a supporting tractor with dual chains which have multiple dogs mounted on skewed surfaces which amplify a spring load support against the umbilical for frictional support of the umbilical and therefore the subsea package.

The method of supporting and lowering a subsea package load on an umbilical from the deck of an offshore service vessel to a subsea work location including providing a reel to store the umbilical on the deck which is not capable of sustaining the maximum load, providing a supporting tractor with dual chains which have multiple dogs mounted on skewed surfaces which amplify a spring load support against the umbilical for frictional support of the umbilical and therefore the subsea package.

A handling device includes a winch comprising a frame, intended to be attached to a structure of the surface vessel and a first drum capable of turning relative to the frame about a first rotation axis and an assembly comprising at least one second drum which surrounds the first drum and is capable of turning relative to the frame about a second rotation axis substantially parallel to the first rotation axis, the winch being capable of being in a decoupled state wherein the first drum and the second drum are rotationally decoupled about the first rotation axis and the second rotation axis so as to allow a traction cable to be wound around the first drum during a first winding step wherein the first drum is rotated about the first axis, the second drum being capable of being in an open state wherein the second drum has a receiving opening that a towed body is capable of passing through in order to enter the interior of the space that surrounds the first drum and that is surrounded by the second drum, the winch being capable of being in a coupled state wherein the first drum and the second drum are rotationally coupled about the second rotation axis so as to allow a flexible elongate body to be wound around the second rotation axis during a second winding step wherein the second drum is rotated about the second axis.

A cable-direction-adaptive ROV winch applied to non-DP-equipped motherships, includes a non-DP-equipped mothership, an A-shaped support and a winch cable-drawing roller provided on the non-DP-equipped mothership, and an underwater vehicle. A pulley is rotatably connected to the A-shaped support, the underwater vehicle is connected to an umbilical cable, the umbilical cable passes around the pulley to be connected to the winch cable-drawing roller, and a locating unit for guiding the umbilical cable is provided on the non-DP-equipped mothership. The A-shaped support is provided with a rod. The pulley includes a sliding section and a rotating section, and the sliding section is annular and slides on the rod along a direction of the rod. The rod has a groove, and a bulge portion is formed on the sliding section. The rotating section is rotatably connected to an outer circle of the sliding section via a shaft bearing.

A retractable davit assembly includes a davit arm that retracts into a davit arm channel formed within the internal volume of a deck of the superstructure of a yacht or other vessel. An outer end of the davit arm includes a fairing matching a profile of the surrounding outer edge of the deck, such that that davit arm is concealed when retracted.

A retractable davit assembly includes a davit arm that retracts into a davit arm channel formed within the internal volume of a deck of the superstructure of a yacht or other vessel. An outer end of the davit arm includes a fairing matching a profile of the surrounding outer edge of the deck, such that that davit arm is concealed when retracted.