A foamable composition for injecting in a region of a ship, for example to prevent and/or reduce water ingress and/or progressive flooding in the ship so as to improve damage stability of the ship, is foamable to form a foam and is dissolvable in a removal composition. The provision of a foam, which can be dissolved by application of a removal composition, e.g., a solvent, may improve ease of removal of the foam, and therefore may reduce the cost and/or speed of reinstatement of the ship. The present invention also relates to a method of improving damage stability of a ship, the method comprising identifying one or more regions of the ship where injection of a material may lead to increase in ship stability, the material being impermeable to water and/or being capable of preventing migration of water.

A foamable composition for injecting in a region of a ship, for example to prevent and/or reduce water ingress and/or progressive flooding in the ship so as to improve damage stability of the ship, is foamable to form a foam and is dissolvable in a removal composition. The provision of a foam, which can be dissolved by application of a removal composition, e.g., a solvent, may improve ease of removal of the foam, and therefore may reduce the cost and/or speed of reinstatement of the ship. The present invention also relates to a method of improving damage stability of a ship, the method comprising identifying one or more regions of the ship where injection of a material may lead to increase in ship stability, the material being impermeable to water and/or being capable of preventing migration of water.

A removable fluid barrier comprises a generally planar flexible body fabricated of at least one resilient material and encapsulating a plurality of permanent magnets. The flexible body has an outer face defining a sealing surface of the removable fluid barrier.

An anti-sinking and anti-fire safety system for boats includes inflatable devices, is installed in a first deflated configuration and assumes a second irreversibly inflated configuration, with a volume considerably greater than the first deflated configuration. Each inflatable device is connected to at least one dispenser expanding a predetermined quantity of non-inflammable foam within the corresponding inflatable device to assume the desired volume in the second inflated configuration. Each dispenser is connected to an activator to activate the corresponding dispenser by remote control of the user, sent by a control system. The emergency system also includes dispensers, connected to the activator expanding non-inflammable foam between the free spaces present between the inflatable devices already inflated, and in any other fire risk space. The non-inflammable foam sublimates after a known time. The control system includes a processor and a communication interface.

An anti-sinking and anti-fire safety system for boats includes inflatable devices, is installed in a first deflated configuration and assumes a second irreversibly inflated configuration, with a volume considerably greater than the first deflated configuration. Each inflatable device is connected to at least one dispenser expanding a predetermined quantity of non-inflammable foam within the corresponding inflatable device to assume the desired volume in the second inflated configuration. Each dispenser is connected to an activator to activate the corresponding dispenser by remote control of the user, sent by a control system. The emergency system also includes dispensers, connected to the activator expanding non-inflammable foam between the free spaces present between the inflatable devices already inflated, and in any other fire risk space. The non-inflammable foam sublimates after a known time. The control system includes a processor and a communication interface.

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.

Disclosed are a self-righting unmanned ship suitable for adverse sea conditions and a self-righting working mode thereof, belonging to the field of unmanned ship equipment and techniques. The unmanned ship comprises a main hull, a self-righting deck, an equipment and pipeline mast, a propeller, a radar, an air inlet and exhaust system, and a main engine system. Through the design of a watertight deck, the hull of the unmanned ship has a self-righting function, avoiding the possibility of the unmanned ship itself turning over, without installing additional self-righting equipment. Meanwhile, the internal structure and the self-righting working mode of the unmanned ship make it possible for the hull to automatically turn off the main engine and the air inlet and exhaust system when the heeling angle of the hull exceeds a certain angle, making the whole ship watertight.

A rigging hose housing is provided to couple a rigging hose to a marine vessel. The rigging hose housing includes a radial mounting plate; an outer cylindrical wall extending perpendicularly from the radial mounting plate a first height above a bottom surface of the radial mounting plate; an inner cylindrical wall extending perpendicularly from the radial mounting plate a second height above the bottom surface of the radial mounting plate; and a gutter formed between the inner cylindrical wall and the outer cylindrical wall. The gutter terminates in a drain hole formed in the outer cylindrical wall. The drain hole is configured to permit the expulsion of fluid collected in the gutter from the rigging hose housing.

A rigging hose housing is provided to couple a rigging hose to a marine vessel. The rigging hose housing includes a radial mounting plate; an outer cylindrical wall extending perpendicularly from the radial mounting plate a first height above a bottom surface of the radial mounting plate; an inner cylindrical wall extending perpendicularly from the radial mounting plate a second height above the bottom surface of the radial mounting plate; and a gutter formed between the inner cylindrical wall and the outer cylindrical wall. The gutter terminates in a drain hole formed in the outer cylindrical wall. The drain hole is configured to permit the expulsion of fluid collected in the gutter from the rigging hose housing.