A nonlimiting example of a yacht preserver includes a handle, an inflator device connected to an upper end of the handle and an inflatable bladder connected to a lower end of the handle. In this nonlimiting example, the inflator device includes a gas canister that is connected to the inflatable bladder by a tube and is configured to deliver gas to inflate the bladder upon activation. The yacht preserver may be used to seal an opening of a yacht by placing the uninflated bladder near the opening in the yacht and activating the inflator device allowing the bladder to expand to seal the opening.

A nonlimiting example of a yacht preserver includes a handle, an inflator device connected to an upper end of the handle and an inflatable bladder connected to a lower end of the handle. In this nonlimiting example, the inflator device includes a gas canister that is connected to the inflatable bladder by a tube and is configured to deliver gas to inflate the bladder upon activation. The yacht preserver may be used to seal an opening of a yacht by placing the uninflated bladder near the opening in the yacht and activating the inflator device allowing the bladder to expand to seal the opening.

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

An inflatable product includes an integrated axial-flow pump which produces a high rate of inflation. The pump includes a cover mounted to a body of the pump and selectively configurable between open and closed positions. In the open position, air is allowed to flow between the inflatable chamber and the ambient air through the pump body. When the cover is closed, the air chamber of the inflatable product is sealed with respect to the ambient air such that air is retained within the inflatable chamber when inflated. A power switch is positioned to be deactivated by the cover when the cover is mounted to the body of the pump, such that replacement of the cover during inflation or deflation of the inflatable product automatically deactivates the pump.

A dual air chamber structure having two independent and air impervious chambers, with each chamber being inflated and deflated by a separate air valve. The inner chamber, except for its air valve, is completely contained by the outer chamber and is comprised of primary horizontal conduit and a plurality of inflatable intermittent vertical posts made of small diameter tubing which are connected by a corresponding plurality of horizontal conduit made of small diameter tubing, such that the inner chamber as a whole is comprised of a repeating series of inflatable vertical posts followed by inflatable horizontal connectors. The outer chamber forms an air impervious bladder around the inner chamber, except for the air valve of the inner chamber.

A marine vessel or watercraft may be provided with an aft extension that, in one configuration of the watercraft, alters the wake of the watercraft, for example by reducing the height of the wake, and which may include a sealable opening to provide crew or payload access into or out of the watercraft at a location (e.g., aft of the transom) that may be difficult for an observer to perceive. The aft extension may be positioned above the watercraft's waterline when the watercraft is in another configuration such that it does not contact with the water to reduce adverse impact on performance characteristics, such as drag, of the hull when the watercraft is in that configuration. The watercraft may transition between the two configuration by selectively varying the displacement of the watercraft or by articulating of the aft extension.

A marine vessel or watercraft may be provided with an aft extension that, in one configuration of the watercraft, alters the wake of the watercraft, for example by reducing the height of the wake, and which may include a sealable opening to provide crew or payload access into or out of the watercraft at a location (e.g., aft of the transom) that may be difficult for an observer to perceive. The aft extension may be positioned above the watercraft's waterline when the watercraft is in another configuration such that it does not contact with the water to reduce adverse impact on performance characteristics, such as drag, of the hull when the watercraft is in that configuration. The watercraft may transition between the two configuration by selectively varying the displacement of the watercraft or by articulating of the aft extension.