A device that can be easily and releasably fixed, moved, and reattached in any desired location on a boat; and provides for the easy attachment and securing of multiple ropes or other fastening means, at the same time, which are then attached to a single or multiple boat fender(s) or other floatation device(s) to facilitate the proper placement and location of the boat fender(s) or other floatation device(s) in relation to the boat, as needed, in that location.

Fender arrangement for docking a marine vessel (1) with a boat landing (2) of a marine offshore structure (3) such as a wind power plant, including at least one fender unit (12, 13) composed of elastically deformable material and provided with a receiving recess (18) for a docking rail (5) of said boat landing (2). The fender arrangement is especially characterized in that fender unit (12, 13) exhibits an internal deformation control cavity (20) positioned at a distance from the receiving recess (18) within the fender unit (12, 13) and extending at least along the width of said receiving recess (18), controlling deformation of the fender unit (12, 13) into forming a gripping hold of a docking rail (5) by compression of the internal deformation control cavity (20) when the fender unit (12, 13) is pressed against the docking rail (5).

An arrangement of fenders nested together for compact storage, the fenders including two or more cylindrical bodies having a cavity accessed through the fender top, the fenders being similar shape but graduated in size such that the cavity of a larger fender tensionally receives the next smaller sized fender, the outer diameter of the smaller fender equal to the inner diameter of the larger fender cavity. A fender has a rigid inner core surrounded by a compressible shell made of foam or similar material. The inner core has attachment points for a rope or line. The smallest nesting fender in the set has a cavity diameter sized to fit a commercially-available, off-the-shelf fender. The fenders may be separated and deployed at individual locations on a vessel, or kept together and deployed as a single fender capable of absorbing a greater impact than any of the fenders individually would absorb.

Inflatable fender having an inflatable first, internal, casing provided at least at one end in the continuation of the chamber with an inflatable tubular appendage (3) equipped with a stoppered end stub (2), this assembly being housed inside an external second casing (5) that hugs the first casing and the appendage (3) and being equipped, at the neck hugging the appendage, with at least one pair of fixings (9) of the D-ring type.

A vertical pneumatic fender comprises a fender body having bowl-shaped hemispherical portions joined to both ends in the axial direction of a cylindrical body portion, and a weight that is connected to the bottom of the fender body. The vertical pneumatic fender accommodates ballast water in an interior space of the fender body, and is provided with a backup chain. One end of the backup chain is connected to the fender body in a position that is offset with respect to the axial line of the fender body, and the other end is connected to the weight. The fender body and the weight are connected with the backup chain in a sack state. The slope of an axial orthogonal reference line and an axial parallel reference line are detected by way of a reference line detector.

A sponson attachment for an airboat allows the airboat to increase its safety and stability very quickly. A method for attaching a sponson to an airboat hull includes attaching first and second flexible tethers to a side of the sponson. The method also includes removably securing the first flexible tether to an exterior of the airboat hull adjacent a gunnel, and removably securing the second flexible tether below the first flexible tether on the exterior of the hull.

A cord angle of reinforcing layers having a bias structure constituting a body portion is set to 25° or more and 45° or less in a neutral state of a body. Reinforcing layers are bonded with a bonding member interposed between the reinforcing layers, the bonding member disposed in a space between the reinforcing layers facing in the cylinder axial direction of the body portion and a hemispherical portion. The layered bonding members have the same bias structure as the reinforcing layers of the body portion. A cord angle of the bonding member is set to ±10° of the cord angle of the reinforcing layers of the body portion. The spaces have a plurality of different sizes. One set of ends of the spaces are set to a plurality of different positions, and the other set of ends are also set to a plurality of different positions.

A marine fender can stick to, and conform to, the hull of a boat and protect the hull from abrasions and impacts. It can remain attached to the side of the boat despite motion of the boat and hard impacts or friction with neighboring objects. The marine fender can be rapidly and straightforwardly applied to, and/or removed from, the side of the boat hull. A boat can be protected by a number of individual fenders, and the group of fenders can be dissembled from each other when desired, and stowed in a relatively small area.

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.

Fender arrangement for docking a marine vessel (1) with a boat landing (2) of a marine offshore structure (3) such as a wind power plant, including at least one fender unit (12, 13) composed of elastically deformable material and provided with a receiving recess (18) for a docking rail (5) of said boat landing (2). The fender arrangement is especially characterized in that fender unit (12, 13) exhibits an internal deformation control cavity (20) positioned at a distance from the receiving recess (18) within the fender unit (12, 13) and extending at least along the width of said receiving recess (18), controlling deformation of the fender unit (12, 13) into forming a gripping hold of a docking rail (5) by compression of the internal deformation control cavity (20) when the fender unit (12, 13) is pressed against the docking rail (5).