An emergency vehicle flotation system has bladder(s) attached in a compressed state on a vehicle. An inflation initiating component comprising a selected one or more of a submersion sensor attached to the vehicle to detect water pressure indicative of submersion of the vehicle and a user interface device. Selectable force gas generator(s) (SFGGs) have one gas-generating propellant cells that are individually fired. The SFGG(s) have conduit(s) that receive gas from fired gas-generating propellant cells and direct the gas to inflate the bladder(s). A controller is communicatively coupled to the inflation initiating component and the gas-generating propellant cells of the one or more SFGGs. The controller enables the emergency vehicle flotation system to receive an inflation signal from the inflation initiating component, and to fire a selected number of the more than one gas-generating propellant cells to at least partially inflate the bladder(s).

An emergency vehicle flotation system has bladder(s) attached in a compressed state on a vehicle. An inflation initiating component comprising a selected one or more of a submersion sensor attached to the vehicle to detect water pressure indicative of submersion of the vehicle and a user interface device. Selectable force gas generator(s) (SFGGs) have one gas-generating propellant cells that are individually fired. The SFGG(s) have conduit(s) that receive gas from fired gas-generating propellant cells and direct the gas to inflate the bladder(s). A controller is communicatively coupled to the inflation initiating component and the gas-generating propellant cells of the one or more SFGGs. The controller enables the emergency vehicle flotation system to receive an inflation signal from the inflation initiating component, and to fire a selected number of the more than one gas-generating propellant cells to at least partially inflate the bladder(s).

Systems and methods for righting a capsized watercraft are described. The system may include a selectively inflatable bladder inside a canvas gunwale float that can be releasably attached to one side of a boat. When the other side of the boat is lifted, the float keeps at least a portion of the lowermost gunwale above the surface of the water, thereby impeding the unwanted entry of water into the boat during righting. The inflatable bladder is sized in volume according to the size and shape of the boat. The system may include one or more floats spaced apart along the side. In another aspect, one of the floats may be attached to a paddle to create a temporary outrigger for use in climbing out of the water and into the boat.

A rigid or inflatable stand up paddleboard (SUP) conversion kit to provide a stable recreational platform for fishing. diving, hunting, nature photography, birdwatching or other activity. A detachable frame positions a pair of pontoons rearward relative to the SUP to avoid interference with rowing. A rolling storage case stores activity accessories such as diving or fishing equipment. After securing the storage case to the SUP, the case serves as a storage seat. A rear canopy frame may be assembled onto the SUP in order to support a rear canopy to conceal the user; and a front canopy frame may assembled onto the SUP in order to provide additional concealment that may be used for a hunting dog. The various conversion kits are compact and self-contained, and can fit easily in the trunk of a car.

An embodiment includes an open/non-closed hull collar assembly that is shaped to increase encapsulated volume of a hull. The hull collar assembly may include a hull collar structure and a foam module. The hull collar structure may include a gunwale, an outboard boundary, and an inboard boundary. The outboard boundary extends in an outward lateral direction from a lower hull portion and extends in a longitudinal direction from the lower hull portion such that at least a portion of the hull collar structure is at least partially included in a freeboard portion of a boat hull. The inboard boundary extends from the gunwale a portion of a distance to a deck such that the hull collar structure is at least partially open or non-closed to an inner hull volume. The foam module is comprised of a non-expansive, closed cell foam. The foam module is shaped for disposition within the hull collar structure.

An embodiment includes an open/non-closed hull collar assembly that is shaped to increase encapsulated volume of a hull. The hull collar assembly may include a hull collar structure and a foam module. The hull collar structure may include a gunwale, an outboard boundary, and an inboard boundary. The outboard boundary extends in an outward lateral direction from a lower hull portion and extends in a longitudinal direction from the lower hull portion such that at least a portion of the hull collar structure is at least partially included in a freeboard portion of a boat hull. The inboard boundary extends from the gunwale a portion of a distance to a deck such that the hull collar structure is at least partially open or non-closed to an inner hull volume. The foam module is comprised of a non-expansive, closed cell foam. The foam module is shaped for disposition within the hull collar structure.

A damping system is presented for damping an oscillation of a load on a fluctuant water surface. The damping system may include four buoyancy systems, two on each side of the load. Each buoyancy system may include two buoys, a lower frame and an upper frame.

The present invention relates to a boat with an improved buoyant body, comprising: a buoyant body, which is an U-shaped tube, consisted of a cladding and foam material filled therein; a bottom plate, set on the bottom of the buoyant body; a tail plate, set at the rear of the buoyant body and the bottom plate; wherein the cladding of the buoyant body is consisted of an inner layer and two outer layers, cladding the said inner layer; wherein the inner layer is a net, while the outer layers are sheets; thereby it is achieved, that the buoyant body possesses the features of low weight, high strength and high friction resistance.

According to the present invention, there is provided a ship having an anti-sinking and anti-capsize device for emergency, which, in an emergency situation that may be caused by load or loss of buoyancy attributable to flooding, can continuously maintain the state of floating on the water by generating buoyancy inside and below a lower hull, and can prevent the ship from being tilted to one side or being completely capsized by maintaining the balance of the ship, thereby preventing a deadly accident that may occur in an emergency, such as a ship sinking accident, and also facilitating rescue operations.

According to the present invention, there is provided a ship having an anti-sinking and anti-capsize device for emergency, which, in an emergency situation that may be caused by load or loss of buoyancy attributable to flooding, can continuously maintain the state of floating on the water by generating buoyancy inside and below a lower hull, and can prevent the ship from being tilted to one side or being completely capsized by maintaining the balance of the ship, thereby preventing a deadly accident that may occur in an emergency, such as a ship sinking accident, and also facilitating rescue operations.