A method for heating a cargo on a watergoing vessel using an energy source (such as a heat source) on another watergoing vessel. The vessels may be underway. The energy may be transferred to the cargo via energy umbilicals configured to carry energy in a transfer fluid. The transfer fluid may be circulated in a cargo heat exchanger configured to move energy into the hot cargo. The energy source on the another watergoing vessel may be a propulsion motor, exhaust heat, or non-propulsion heat source. The method may include heating the hot cargo. The method may also include switching between heat sources when both vessels are configured to heat the hot cargo.

A method for heating a cargo on a watergoing vessel using an energy source (such as a heat source) on another watergoing vessel. The vessels may be underway. The energy may be transferred to the cargo via energy umbilicals configured to carry energy in a transfer fluid. The transfer fluid may be circulated in a cargo heat exchanger configured to move energy into the hot cargo. The energy source on the another watergoing vessel may be a propulsion motor, exhaust heat, or non-propulsion heat source. The method may include heating the hot cargo. The method may also include switching between heat sources when both vessels are configured to heat the hot cargo.

A personal watercraft includes a watercraft body provided with a deck, a hood, and a locking mechanism. The deck includes a driver boarding portion and an opening forming portion where an opening is formed forward of the driver boarding portion and an engine room is partitioned below the opening. The hood, to which a steering shaft is attached to cause a handle to be exposed upward, covers the opening from above to allow opening and closing by pivoting with respect to the deck by using a front end supported by the opening forming portion as a fulcrum. The locking mechanism is a mechanism that fixes the rear end of the hood to the deck with the opening closed, and includes a first locking part and a second locking part disposed with spacing in the left-right direction.

A personal watercraft includes a watercraft body provided with a deck, a hood, and a locking mechanism. The deck includes a driver boarding portion and an opening forming portion where an opening is formed forward of the driver boarding portion and an engine room is partitioned below the opening. The hood, to which a steering shaft is attached to cause a handle to be exposed upward, covers the opening from above to allow opening and closing by pivoting with respect to the deck by using a front end supported by the opening forming portion as a fulcrum. The locking mechanism is a mechanism that fixes the rear end of the hood to the deck with the opening closed, and includes a first locking part and a second locking part disposed with spacing in the left-right direction.

Hull structure made of composite material that includes a hull with high thickness single skin monocoque plating without reinforcements and an internal stiffening structure (1) formed by a deck (2), two opposing transverse bulkheads (3) and more cradle-shaped load-bearing elements (5) to support components or machinery intended to be housed on board said hull structure. Advantageously, the above-mentioned cradle-shaped load-bearing elements (5) are supported at the respective internal portions of said opposite transverse bulkheads (3) only at their opposite head ends (5b).

Hull structure made of composite material that includes a hull with high thickness single skin monocoque plating without reinforcements and an internal stiffening structure (1) formed by a deck (2), two opposing transverse bulkheads (3) and more cradle-shaped load-bearing elements (5) to support components or machinery intended to be housed on board said hull structure. Advantageously, the above-mentioned cradle-shaped load-bearing elements (5) are supported at the respective internal portions of said opposite transverse bulkheads (3) only at their opposite head ends (5b).

An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is stopped.

An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is stopped.

The invention relates to a Floating Production Storage and Offloading, FPSO-, or Floating Production Storage, FSO-, structure comprising a hull adapted to support a weight of at least 50.000 tons, preferably at least 70.000 tons, with sidewalls of a length L extending in a longitudinal direction, a bottom structure and an upper deck, the hull having a breadth B, a process unit support structure overlying the upper deck, hydrocarbon processing units mounted on the process unit support structure, an outer part of the hull comprising: side spaces being bounded by the bottom structure, the upper deck, a respective side wall and an adjacent longitudinal sidewall, the adjacent longitudinal sidewalls being situated at a distance Wt from the side walls, Wt being at least equal to the smallest of 0.2 B or 11.5 m, an inner part of the hull comprising: at least one hydrocarbon storage tank for storage of hydrocarbons being situated between the bottom structure, the upper deck and the adjacent longitudinal walls, wherein the vessel comprises a centre line bulkhead and, between one and four hydrocarbon storage tanks of substantially the same size extending, in a transverse direction, between an adjacent longitudinal sidewall and the centreline bulkhead.

A payload re-positioning system for a maritime vehicle that includes a hull having a first portion and a second portion. The maritime vehicle includes a payload disposed within the second portion. The first portion may include an impact zone and a compressible zone. The impact zone is arranged to engage a target external to the maritime vehicle. The compressible zone is arranged to reduce the initial length of the first portion to a compressed length in response to the impact zone engaging the target external, thereby reducing a distance between the payload and the impact zone.