A monolithic concrete marine vessel hull construction includes an inner hull skin including at least two transversely interconnected, longitudinally, horizontally coextensive hull shells made of vertically slip-formed concrete. Each of these inner hull shells is generally cylindrically curved on inner and outer peripheral surfaces thereof. Each inner hull shell is closed at its opposite ends by end walls. The hull construction further includes an outer hull skin including an outer hull shell mad...

A concrete vessel is provided with a loading and unloading system, in which the vessel has an inner hull skin which is generally cylindrically curved. An outer hull skin is provided, which is transversally spaced from, and peripherally encloses the inner hull skin. The outer hull skin is planar on an upper side, so as to form a deck. A barge dock or hanger is located between the deck and the inner hull skin. A gate is provided in the outer hull skin between the deck and the inner hull skin for f...

An outboard motor having an air compressor for delivering compressed air to a scavenging system for the engine. The air compressor is designed so that when the engine is not running, any moisture which may be present in the pumping cavity of the air compressor will drain out of the outlet opening of the compressor.

A resilient marine fender for protecting a boat from damage resulting from inpact against a boat dock, piling or other marine structure includes a fender body having an elongate bumper portion on one side of sufficient resiliency to cushion normal impact of the boat and mounting surface on the opposite side thereof of sufficiently frictional character with respect to the piling for generally non-slipping engagement therewith. Selectively engagable and disengagable strap means at the lateral side...

A marine anchor having a cylindrical hub member including a plurality of radially extending, peripherally spaced, rod-like flukes. The anchor further includes a rod-like supporting handle extending substantially coextensive with and spaced radially from the hub member. The supporting handle is configured to define oppositely disposed bails arranged to alternatively receive a slidably mounted ring attachable to an anchor line or rope, depending upon the position of the anchor.

An internally stabilized earth wall is disclosed along with facing elements suitable for construction of that wall in a wet marine environment. The wall elements include footer panels and wall panels, each of which is provided with a pivotally attached planar array of reinforcing members. The reinforcing members are hingedly mounted so as to be lowered in a vertical plane to a substantially horizontal posture on top of a lift of particulate material. According to the method, the footer panels ar...

A flexible embarkation-debarkation marine ladder having a pair of flexible wire rope suspension members. A plurality of steps are secured to the suspension members at spaced intervals. The steps include a pair of ears. The opposite ends of the rungs are secured to the ears in spaced relationship. Each ear includes a tubular sleeve extending perpendicularly to and in aligned relationship to the spacing between the rungs. The suspension member extends coaxially through the sleeves. A plurality of ...

A marine fastener is disclosed using a base plate, a retainer nut, the Jaw button, and a spring made of thermoplastic, with the inner back opening of the spring cooperating with a ridge on the outer opening of the jaw button in order to selectively bias the jaw button in respect to the base plate.

A marine vehicle, which may comprise a sidewall gas-cushion vehicle, is provided with a pair of steering rudders, a sensor for detecting incipient undesirable motions of the vehicle, and an electrical, mechanical, and/or hydraulic system, or a hybrid thereof, for operating the rudders so as to apply restoring forces to the vehicle. The steering rudders are mounted beneath the vehicle and on opposite sides of the longitudinal axis thereof, being disposed in planes which are inclined to the vertic...

A marine fender is disclosed, which comprises a hollow cylindrical body composed of rubber or rubbery elastic material, each end of which being provided with a flange for a quay wall or a shock receiving member, an annular rigid reinforcing plate embedded in each flange, and a fillet reinforcement provided on a foot portion of each flange. In the marine fender, an annular groove is further formed in a region adjacent to the fillet reinforcement at each end of the body.