A submarine support ship is preferably a triple-hulled vessel; the lower portion of the ship is a paired-hull catamaran which is capable of deep diving, clasping the submarine at deep sea, and floating upwards together with the clasped submarine. The upper portion of the ship is a buoyancy tank, which can supply air to and pull up the deep-diving lower portion, and can also conduct security of an ocean-going submarine. For the submarine support ship of the present invention, by utilizing a mature deep diving submersible technology, the lower portion of the submarine support ship is manufactured as a deep-diving submersible in a submarine contour form, which is quickly separated from the upper portion of the submarine support ship and dives to reach the submarine position in the deep sea, clasps the submarine and then floats upwards together with the submarine as a whole to the water-surface position, such that the egress hatch of the submarine is docked with a dedicated docking hatch of the submarine support ship, to implement rescue security of the submarine; which mainly solves the problem that the rescue water-depth of current deep-diving lifeboats is shallow, but it also solves the problems that the deep-diving lifeboat has many rescue links, slow speed, and can only save people, but not submarines.

A personal watercraft includes a ship body, a luggage compartment provided in the ship body and provided with an opening for taking in and out luggage, a hatch attached to the ship body and capable of opening and closing the opening, and a lock mechanism for fixing the hatch to the ship body in a state where the opening is closed. The lock mechanism includes a plurality of lock portions that engage the hatch and the ship body with each other, one operation lever that causes the plurality of lock portions to unlock the engagement in an interlocking manner, and a transmission member that transmits an operation action of the operation lever to at least one of the plurality of lock portions to unlock the engagement of the lock portion.

A personal watercraft includes a ship body, a luggage compartment provided in the ship body and provided with an opening for taking in and out luggage, a hatch attached to the ship body and capable of opening and closing the opening, and a lock mechanism for fixing the hatch to the ship body in a state where the opening is closed. The lock mechanism includes a plurality of lock portions that engage the hatch and the ship body with each other, one operation lever that causes the plurality of lock portions to unlock the engagement in an interlocking manner, and a transmission member that transmits an operation action of the operation lever to at least one of the plurality of lock portions to unlock the engagement of the lock portion.

An object of the present invention is to provide a float assembly that can prevent the floats from flipping. The present invention provides a float assembly including a plurality of floats connected together comprising: a filled float having a hollow portion, wherein the hollow portion has a part filled with a filler, and the filled float is arranged at a position facing an assembly periphery surrounding the float assembly.

An object of the present invention is to provide a float assembly that can prevent the floats from flipping. The present invention provides a float assembly including a plurality of floats connected together comprising: a filled float having a hollow portion, wherein the hollow portion has a part filled with a filler, and the filled float is arranged at a position facing an assembly periphery surrounding the float assembly.

This ship includes a ship body, a fuel tank chamber, a stern-side engine room, a bow-side engine room, a main fuel line and a sub-fuel line, and a pump mechanism. The main fuel line connects a fuel tank, a stern-side power generation unit, and a bow-side power generation unit through the bow-side engine room. The sub-fuel line connects at least the fuel tank and the stern-side power generation unit, and is disposed through a section different from the bow-side engine room through which the main fuel line passes. The pump mechanism selectively feeds fuel into the main fuel line or the sub-fuel line from the fuel tank.

A pontoon boat having a battery stowage system for suspension of batteries in a pontoon. The system provides sufficient clearance between the batteries and a bottom interior of the pontoon to enable water that may enter the pontoon to pass under the batteries for discharge, for example with a bilge pump. The stowage system providing for positioning the batteries in a stowed position below the deck in a pontoon and for translating the batteries upwardly to a deck access opening. The system may provide ease of access during installation and service of the batteries while protecting the batteries from elements that may be present in the enclosure.

A pontoon boat having a battery stowage system for suspension of batteries in a pontoon. The system provides sufficient clearance between the batteries and a bottom interior of the pontoon to enable water that may enter the pontoon to pass under the batteries for discharge, for example with a bilge pump. The stowage system providing for positioning the batteries in a stowed position below the deck in a pontoon and for translating the batteries upwardly to a deck access opening. The system may provide ease of access during installation and service of the batteries while protecting the batteries from elements that may be present in the enclosure.

A pontoon is provided, comprising a plurality of pontoons. The plurality of pontoons may include a port-side pontoon, a starboard-side pontoon spaced from the port-side pontoon, and at least one a middle pontoon positioned intermediate the port-side pontoon and the starboard-side pontoon. A deck may be coupled to each of the port-side pontoon, the starboard-side pontoon, and the at least one middle pontoon. A manifold system may be positioned within the middle pontoon, and the manifold system may comprise a first portion including a first fluid conduit having an inlet in fluid communication with an exterior of the middle pontoon. The manifold system may further comprise a second portion removably coupled to the first portion and having a second fluid conduit positioned to receive fluid from the first fluid conduit. The manifold system may still further comprise a third portion including a third fluid conduit positioned to receive fluid from the second fluid conduit and having an outlet in fluid communication with the exterior of the middle pontoon. The second portion may be removably coupled to the third portion. Further, a motor may be coupled to the manifold system.

A pontoon is provided, comprising a plurality of pontoons. The plurality of pontoons may include a port-side pontoon, a starboard-side pontoon spaced from the port-side pontoon, and at least one a middle pontoon positioned intermediate the port-side pontoon and the starboard-side pontoon. A deck may be coupled to each of the port-side pontoon, the starboard-side pontoon, and the at least one middle pontoon. A manifold system may be positioned within the middle pontoon, and the manifold system may comprise a first portion including a first fluid conduit having an inlet in fluid communication with an exterior of the middle pontoon. The manifold system may further comprise a second portion removably coupled to the first portion and having a second fluid conduit positioned to receive fluid from the first fluid conduit. The manifold system may still further comprise a third portion including a third fluid conduit positioned to receive fluid from the second fluid conduit and having an outlet in fluid communication with the exterior of the middle pontoon. The second portion may be removably coupled to the third portion. Further, a motor may be coupled to the manifold system.