The present invention relates to a rotating and sliding boat boarding door mechanism configured to aid the vessel's occupants in their ingress and egress to and from the vessel. More particularly, the present invention provides a rotating and sliding boat boarding door assembly and system that slidingly moves into a recess in the vessel's exterior (e.g., side, transom, and/or gunwale) that has been configured to receive and maintain the boarding door assembly in a position where it is out of sight when fully recessed.

The present invention is directed to a cargo scraping apparatus for a cargo carrier having a cargo hold. The cargo scraping apparatus includes a gantry, at least one scraper blade adapted to substantially span a width of the cargo hold, means to connect the at least one scraper blade to the gantry, and means to raise or lower the at least one scraper blade relative to the gantry. Moving the gantry relative to the cargo hold causes the at least one scraper blade to push or sweep cargo towards one or more regions of the cargo hold. The invention is also directed to a system for unloading cargo from a cargo hold, a system for assisting in loading cargo into a cargo hold, and a system for loading and unloading cargo into and from a cargo hold.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is slidably attached to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat. An actuation system is configured to effectuate essentially vertical displacement of the dive platform with respect to the at least one hull portion. An interface system is configured to couple the actuation system with a rotation system for the at least one propeller drive system.

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.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is coupled to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is slidably attached to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat, thus allowing for essentially vertical displacement of the dive platform with respect to the at least one hull portion.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is coupled to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat. The dive platform includes at least one clearance panel configured to allow access to the at least one propeller drive system in the event that the at least one propeller drive system needs to be serviced.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is slidably attached to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat. An actuation system is configured to effectuate essentially vertical displacement of the dive platform with respect to the at least one hull portion. An interface system is configured to couple the actuation system with a rotation system for the at least one propeller drive system.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is coupled to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat. The dive platform includes at least one clearance panel configured to be displaced in the event that the at least one propeller drive system rotates upward due to running aground.

An aft-mounted dive platform system includes at least one hull portion rigidly affixed to a hull of a boat. A dive platform is coupled to the at least one hull portion and is positioned, at least partially, behind at least one propeller drive system affixed to the stern of the boat. The at least one hull portion includes a first hull portion and a second hull portion. The first hull portion includes: a first inner portion surface positioned proximate a first side of the at least one propeller drive system and a first Outer portion surface positioned proximate a first outer surface of the hull of the boat; wherein the first outer portion surface of the first hull portion is recessed with respect to the first outer surface of the hull of the boat.