A powered water vessel includes a unitary section of the bow that is pivotably rotatable about a horizontal axis thereby permitting a closed-bow configuration and an opened-bow configuration. The closed-bow configuration is generally amenable to regular boat operations, while the opened-bow configuration is generally amenable to loading and unloading passengers, vehicles and/or cargo. A folding ramp assembly is extendable through the open-bowed configuration for loading and unloading, with track extensions providing additional extension distance.

A powered water vessel includes a unitary section of the bow that is pivotably rotatable about a horizontal axis thereby permitting a closed-bow configuration and an opened-bow configuration. The closed-bow configuration is generally amenable to regular boat operations, while the opened-bow configuration is generally amenable to loading and unloading passengers, vehicles and/or cargo. A folding ramp assembly is extendable through the open-bowed configuration for loading and unloading, with track extensions providing additional extension distance.

One or more wavegates are located on a seismic surface vessel to substantially prevent or limit waves from crashing onto a back deck of the vessel. The wavegate may comprise one or more steel gates or doors located at or near the aft portion of the vessel, such as on or near the rear end of the back deck, that may be moveable between a closed position and an open position. Each door may be fixed in position and/or be rotated and/or moveable in a horizontal and/or vertical direction between different positions. The wavegate allows the surface vessel to travel backwards and/or in the face of incoming waves while substantially preventing and/or limiting waves from crashing onto the back deck of the marine vessel. The seismic surface vessel may be a deployment vessel or a hybrid seismic shooting and deployment vessel or another marine surface vessel.

A boat includes a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of the hull and suitable for opening and closing in correspondence with an aperture of the compartment, the hatch having a body with opposed side located in correspondence with side walls of the compartment and a upper edge and a lower edge. The hatch includes an actuator to open and close the compartment arranged inside its own body. The actuator rotatably constraining at least one of the sides of the hatch to the hull. The body being not provided with any further connections of the sides to the hull.

A boat includes a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of the hull and suitable for opening and closing in correspondence with an aperture of the compartment, the hatch having a body with opposed side located in correspondence with side walls of the compartment and a upper edge and a lower edge. The hatch includes an actuator to open and close the compartment arranged inside its own body. The actuator rotatably constraining at least one of the sides of the hatch to the hull. The body being not provided with any further connections of the sides to the hull.

A pontoon boat includes a deck and an interior of the pontoon boat that is located on the deck. The interior of the pontoon boat includes seating for passengers of the pontoon boat. The pontoon boat includes a door movable between a closed position that blocks access to the interior and an open position that facilitates access to the interior. The door includes a door frame and a release assembly movable vertically relative to the door frame from an upper position to a lower position, and the release assembly is positioned at least partially within the door frame. When the release assembly is in the lower position and the door is in the closed position the door is not movable to the open position.

A pontoon boat includes a deck and an interior of the pontoon boat that is located on the deck. The interior of the pontoon boat includes seating for passengers of the pontoon boat. The pontoon boat includes a door movable between a closed position that blocks access to the interior and an open position that facilitates access to the interior. The door includes a door frame and a release assembly movable vertically relative to the door frame from an upper position to a lower position, and the release assembly is positioned at least partially within the door frame. When the release assembly is in the lower position and the door is in the closed position the door is not movable to the open position.

A jettison device isolates an object, particularly a potentially hazardous object on a ship, platform or similar object. The jettison device includes a housing with an opening configured to face towards an outside region, and a container configured to hold one or more of the objects. The jettison device further includes a container lock and a container jettison. A ship, platform or other vessel includes at least one of the jettison devices above and at least one jettison device arranged in or near a hull surface with the opening facing a region outside the hull surface.

A jettison device isolates an object, particularly a potentially hazardous object on a ship, platform or similar object. The jettison device includes a housing with an opening configured to face towards an outside region, and a container configured to hold one or more of the objects. The jettison device further includes a container lock and a container jettison. A ship, platform or other vessel includes at least one of the jettison devices above and at least one jettison device arranged in or near a hull surface with the opening facing a region outside the hull surface.

A boat includes a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of the hull and suitable for opening and closing in correspondence with an aperture of the compartment, the hatch having a body with opposed side located in correspondence with side walls of the compartment and a upper edge and a lower edge. The hatch includes an actuator to open and close the compartment arranged inside its own body. The actuator rotatably constraining at least one of the sides of the hatch to the hull. The body being not provided with any further connections of the sides to the hull.