Abstract

By including a Concentric Pad Keel, a watercraft experiences a reduction in Slamming forces as well as generally improved Seakeeping and Seakindliness.

IPC Classes  ?

• B63B 1/04 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull

Abstract

The disclosed watercraft hull has a flat pad keel whose beam tapers towards the bow and its beam at the transom is 15% to 25% of the hull's beam at its chines. The hull is symmetric about its centerline, has a fine entry bow, a transom, and a pair of hard chines. Between the pad keel and the chines the hull has at least one pair of generally flat panels referred to herein as longitudinal steps having approximately 0 degrees of deadrise forming planing surfaces symmetrically located about the hull centerline. The hull also includes at least one pair of ultra high deadrise panels, outboard of and adjacent to the pad keel, located symmetrically about the hull centerline, and extending therefrom to the flat planing panels above them.

IPC Classes  ?

• B63B 1/32 - Other means for varying the inherent hydrodynamic characteristics of hulls

Abstract

A traction cell for use in a track drive of an amphibious or all-terrain vehicle includes a rigid section for connection to a track drive and at least one semi-rigid compliant section which is connected to the rigid section. The semi-rigid compliant section has a bottom surface to which a penetration resistant sole is secured on a rear face which is raked relative to the vertical.

IPC Classes  ?

• B60F 3/00 - Amphibious vehicles, i.e. vehicles capable of travelling both on land and on waterLand vehicles capable of travelling under water
• B62D 55/18 - Tracks
• B62D 55/20 - Tracks of articulated type, e.g. chains
• B63H 19/00 - Marine propulsion not otherwise provided for

Abstract

A watercraft has a lifting body secured to its bow below the waterline; the lifting body has deadrise on either side of the bow.

IPC Classes  ?

• B63B 1/24 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type

Abstract

A logistics ship having a cargo deck which is balanced and supported about a horizontal pivot so that it can be inclined to elevate or depress one end of the deck relative to the other end in order to facilitate the unloading or loading of the ship into the water or onto other vessels, beaches, or piers.

IPC Classes  ?

• B63B 1/00 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils

Abstract

An amphibious vehicle for transiting deep or shallow waters and/or the full range of wetland and dry soil environments, consists of a box-like structure with buoyant tracks that are powered to move around the structure. The buoyant tracks encircle the vehicle's length and extend laterally for a substantial portion of the vehicle's width or beam. When operating in water the buoyant tracks provide a majority of the buoyancy keeping the box-like structure above water surface or its tracks can be flooded to submerge the vessel. The amphibious vehicle can transport heavy equipment and personnel from ships located offshore, across undeveloped beaches, to positions ashore.

IPC Classes  ?

• B60F 3/00 - Amphibious vehicles, i.e. vehicles capable of travelling both on land and on waterLand vehicles capable of travelling under water