A pneumatic fender and a mouth piece metal with an open/close valve is biased by a resilient member toward a closing direction of a through hole formed on a dividing wall constituting a receiving chamber. A safety valve is isolated from a cavity of a fender bladder by a receiving chamber, thus allowing the safety valve to be able to be detached and attached while the pneumatic fender is in use. A confirmation test of a valve opening pressure of the safety valve is performed by opening a receiving chamber open/close valve and raising an internal pressure of a cavity of the receiving chamber to a pressure threshold (Pm) via a receiving chamber communication passage. Upon an internal pressure (P) of the cavity being less than the pressure threshold (Pm) and greater than a standard pressure (Pc), the open/close valve opens the through hole, thus allowing the safety valve to function.

A pneumatic fender and a mouth piece metal for a pneumatic fender with an open/close valve fixed at a position in which a through hole formed in a dividing wall constituting a receiving chamber, where the valve is closed by closed position fixing members. A safety valve is isolated from a cavity of a fender bladder by a receiving chamber, the safety valve being able to be detached and attached while the pneumatic fender is in use. A confirmation test of a valve opening pressure of the safety valve is performed by opening a receiving chamber open/close valve and raising an internal pressure of a cavity of the receiving chamber to a pressure threshold via a receiving chamber communication passage. The open/close valve is fixed at a position in which the through hole is open by open position fixing member.

A fender for boats formed from a flexible shell housing a bladder or coated with an air impervious material wherein the shell is constructed to entrap a volume of air. A reusable seal provides an air tight interior with air trapped within the interior using an interlocking closure seal. The shell includes clips attached to an open end to secure the closure seal. When the fender is in a deflated condition, the shell may be stored flat or rolled. When the fender is in an inflated condition, the seal is closed, trapping air in the interior of the fender. The upper edge of the shell is rolled and secured by clips to prevent unrolling. The fender induces a pressure in the fender cavity and reinforces the seal to prohibit air release. When the fender is sealed, the fender can be used to protect a boat impact, wherein the fender absorbs the impact load.

A fender for boats formed from a flexible shell constructed of an air impervious material constructed and arranged to entrap a volume of air. The shell formed from a continuous sidewall having an upper edge and a rectangular shaped bottom wall forming an interior. A reusable zipper seal is attached to the sidewall near the upper edge. The seal provides an airtight interior for trapping air. The shell includes clips attached to a bottom sidewall releasably attachable to reciprocal clips attached to an upper edge of the sidewall. When the fender is in a deflated condition, the shell may be stored flat or in a roll position. When the fender is inflated, the seal traps air in the interior. The upper edge of the sidewall is rolled and secured by the clips to compress air within the shell. When the fender is inflated, the fender can be secured to a boat or dock to protect the boat from impact, wherein the fender absorbs the impact load.

A plurality of modules are arranged on the broadside of a ship, each module includes a housing, and the housing is provided with a composite gas supply assembly, a composite airbag assembly, an intelligent control assembly, and a mechanical transmission assembly; the intelligent control assembly is configured for predicting the impact energy and a collision angle of a collision object, sending an inflation instruction to the composite gas supply assembly, inflating a large airbag to a proper air pressure, inflating a small airbag to a rated air pressure, and sending an angle adjustment instruction to the mechanical transmission assembly to adjust the collision angle of the small airbag; the large airbag is matched with the small airbag to fully absorb a collision force vertically acting on the surface of a hull.

An inflatable fender system for a marine vessel provides one or more inflatable bladders with air control valves and residing along a fender substrate, a stanchion, a housing containing the stanchion, and one or more tracks disposed along the hull of the marine vessel for guiding and supporting the fender substrate. The fender system includes an inflator for inflating the one or more inflatable bladders, and a control system for sequential operation. The fender substrate comprises an inner layer and an outer layer, with air pockets forming the bladders. The substrate is fabricated from a durable, waterproof material. The system is designed for efficient storage and deployment, accommodating various hull contours and vessel features. Methods of use are also provided.