A nonlimiting example of a yacht preserver includes a handle, a container at an end of the handle, and an inflator device connected to an inflatable bladder. In this nonlimiting example, the inflator device includes a gas canister that 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.

Various insulations that employ magnetic components are disclosed herein. A sheet insulation component is formed out of an insulation material. A sheet magnetic component is attached to the face of the sheet insulation component. The sheet magnetic component substantially covers the face of the sheet insulation component.

Various insulations that employ magnetic components are disclosed herein. A sheet insulation component is formed out of an insulation material. A sheet magnetic component is attached to the face of the sheet insulation component. The sheet magnetic component substantially covers the face of the sheet insulation component.

Various insulations that employ magnetic components are disclosed herein. A sheet insulation component is formed out of an insulation material. A sheet magnetic component is attached to the face of the sheet insulation component. The sheet magnetic component substantially covers the face of the sheet insulation component.

Various insulations that employ magnetic components are disclosed herein. A sheet insulation component is formed out of an insulation material. A sheet magnetic component is attached to the face of the sheet insulation component. The sheet magnetic component substantially covers the face of the sheet insulation component.

A sealing clamp that prevents or regulates the transfer of liquids or gases through puncture holes in a vessel. A temporary sealing device to prevent or reduce water penetrating into a ship or other vessel with a holed hull by means of a clamp passing through the hole in the hull and installed and operated from one side of the hull and facilitates pumping out unwanted liquid back through the hole in which it came.

A sealing clamp that prevents or regulates the transfer of liquids or gases through puncture holes in a vessel. A temporary sealing device to prevent or reduce water penetrating into a ship or other vessel with a holed hull by means of a clamp passing through the hole in the hull and installed and operated from one side of the hull and facilitates pumping out unwanted liquid back through the hole in which it came.

An isolation method, and apparatus, for isolating and temporarily sealing closed an opening of a marine vessel to prevent ingress of fluid into or through the opening, sealing an internal side of the opening from an external side of the opening. A positioning line is provided between a connection point and the sealing apparatus, with the positioning line being tensioned to pull the sealing apparatus towards the opening. The method is performed entirely diverlessly, with no personnel required in or under the water at any stage of the method, including during connecting the positioning line to the connection point and pulling the sealing apparatus onto and/or into the opening.

A device for sealing an opening in a wall includes at least one flexible, deformable balloon; a locking means, which is a bar that is slidable into the opening of the wall from one side of the latter and engages with the opposite side of said wall; a bearing means that is a circular plate capable of bearing on the at least one balloon and of sandwiching same against the wall; and a connection means, which is a flexible rope located between the locking means and the bearing means, passes through an inner duct of the balloon, and is capable of compressing the balloon against the opening.

A device for sealing an opening in a wall includes at least one flexible, deformable balloon; a locking means, which is a bar that is slidable into the opening of the wall from one side of the latter and engages with the opposite side of said wall; a bearing means that is a circular plate capable of bearing on the at least one balloon and of sandwiching same against the wall; and a connection means, which is a flexible rope located between the locking means and the bearing means, passes through an inner duct of the balloon, and is capable of compressing the balloon against the opening.