Abstract: The invention is directed to a unique tank and ring system for transporting and circulating high specific gravity soluble fluid on board a vessel.

Abstract: A window for a support structure, such as a hull of a freighter or tanker or other large ship having clips, studs, glue and protective ultraviolet paint.

Abstract: A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising: (a) a metal tube; (b) a bonding layer disposed on both sides of the metal tube; and (c) an internally cross-linked polymer layer disposed on both bonding layers.

Abstract: A vessel having a moon pool positioned in the center of the vessel. The moon pool plug is adapted to have controllable positive and negative buoyancy. The plug has a top, a cover, a bottom, a first angled side, a second angled side, a third angled side, a fourth angled side; first plates disposed traversely across the bottom of the plug; and second plates disposed perpendicular to said first plates across the bottom of the plug. These is a water valve for permitting sea water to egress from the plug; an air valve for permitting air to be pumped into the plug. There is a guiding device secured to the plug to guide the plug into the moon pool. There is a hoist secured to the plug to lift the plug into the desk of the vessel.

Abstract: A paddle drive system comprising: a slow speed hydraulic motor drive having at least one bearing which is axial, radial or both axial and radial; and a shaft secured to the at least one bearing of the hydraulic motor; and at least one, and preferably two paddlewheels, secured to said shaft, each paddlewheel comprising: a plurality of diaphragm plates, each diaphragm plate secured on one end to said shaft; a plurality of radial arms, each arm having a first end and a second end, said radial arms secured to said diaphragm plate on said first end; and at least one bucket secured to said second end of said plurality of radial arms.

Abstract: A marine engine fresh water cooling system and a marine vessel using a coolant system for use on double bottomed hulls or single hulled vessels which has a unique flange and bushing combination.

Abstract: An articulated tug barge having a tugboat with two or three skegs and a barge with two skegs, wherein the tug comprises a large surface area double plate rudder, and the skegs are 30% of the length of the tug, and the barge skegs are 10% of the length of the barge.

Abstract: A ship hull for a fire boat capable of speeds up over 18 knots and up to 22 knots formed from high tensile strength steel by a method comprising: (a) longitudinally framing said hull by forming a frame having more longitudinal members than transverse members, and wherein said longitudinal members are spaced to carry more and absorb more of the weight and stress than the transverse members, and wherein said longitudinal members are in a spaced parallel relations of between 12 and 24 inches apart, and said transverse members are in a spaced parallel relation of between 48 and 96 inches apart, and (b) plate and shape weight minimization modeling consisting of using rule based parametric equations to size plates and shapes which are based on industrial classification society standards.

Abstract: A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising: (a) a metal tube; (b) a bonding layer disposed on both sides of the metal tube; and (c) an internally cross-linked polymer layer disposed on both bonding layers.