Abstract: The present invention describes a stable floating environment for an individual or cargo while at rest or under tow. The device, when occupied by an individual, allows the user to recline, lay prone or sit up right in any body of water. An important feature of the device is that it should possess a center of buoyancy above the center of mass of the occupant or cargo.

Abstract: A composite skin tar a collapsible canoe. The skin covers a frame which includes a pair of gunwales, ribs, and stringers. The skin has a pair of polymer-coated gunwale sleeves which slidably engage the gunwales, a pair of polymer-coated side panels, each attached to one of the gunwale sleeves, and a polymer-coated bottom panel attached to the side panels. In one embodiment of the skin, the side panels are attached to the bottom panel with a heat sealed seam. One aspect of the invention is the gunwale sleeves, each of which has a fabric layer, providing a surface with reduced friction to allow the gunwales to be inserted or removed without binding. Another aspect of the invention is the bottom panel, which is constructed from a bottom fabric substrate having an uncoated inner surface, to which is attached a foam pad. Preferably, longitudinal rub strips of a polymer film are bonded to the coated outer surface of the bottom panel.

Abstract: A kick boat employing a hinged frame design provides an infinitely adjustable foot rest and leg support, and infinitely adjustable mainframe positioning. No tools are required to assemble and disassemble the boat. The hinged frame is structured and arranged to collapse and partially rotate to form a back pack frame. Alternatively, the hinged frame may be fully rotated to a fully collapsed space minimizing storage position. A cargo bay restraining system is also provided.

Abstract: A collapsible boat having a framework comprising forward and aft keel member portions, forward and aft port and starboard gunwale member portions, forward and aft port and starboard stringer member portions, and a plurality of cross-rib members. The keel, gunwale and stringer member portions are joined by interconnecting members into aligned longitudinal members that are also interconnected to the cross-rib members to create forward and aft hull sections. A keel locking and tensioning mechanism is used to join together the forward and aft hull sections at the keel to define a hull framework having elongate keel, gunwale and stringer members that extend longitudinally between a bow and stern and that are spaced and braced by transversely extending cross-rib members. A rocker adjustment system in the gunwale member portions joins the forward and aft gunwale members and permits variation of the elevation of the bow and stern of the framework by adjusting the overall length of the gunwale member portions.

Abstract: An assembled sail powered vehicle, including: a sail; a frame for supporting the sail, the frame including a plurality of elongated rigid frame members, a plurality of joint assemblies releasably captured between the ends of respective of the frame members, and a plurality of elongated flexible members, the flexible members being connected between respective of the joint assemblies, and the flexible members and joint assemblies cooperating to apply compression loads to the frame members; and structure for supporting the frame for movement across a surface.

Abstract: A collapsible hull boat has a folding transverse transom and a rigid transom board substantially similar in shape to the transom when deployed. The rigid transom board is attached from the outside of the hull to the deployed transom so as to cover its exterior face and is removably fixed to the deployed transom in order to protect it and to withstand the thrust of a motor fixed to the rigid transom board to propel the boat.

Abstract: A one-man vessel ideally suited for fishing includes a pair of rigid support pontoons that are interconnected by cross-frame members to provide a solid base from which a number of accessory components are mounted. A seat with a foldable back is supported on the cross frame members along with a stripping apron having storage pouches and a work table surface. Oar locks, fishing pole supports, fish finders and other accessory items are easily attached along the outer side of the pontoons while a cooler can be supported from the seat back for ready access by an operator. A storage rack is also provided between the pontoons for retaining and supporting additional fishing gear or the like that might be desired on the vessel.

Abstract: A mooring line is automatically rewound into a bundle of loops by a rewinding reel that includes a rewinding line that is attached at spaced intervals by clamped eyelets with the last eyelet tied to the end of the rewinding line. The mooring line when attached to the boat is allowed to extend the length of the mooring line and the rewinding pulley attached to a suitable support such as a dock or piling automatically rewinds to form sequential loops forming the bundle of the mooring line.

Abstract: An inflatable rescue pontoon for performing multiple water rescue operations comprises an elongate shell having a plurality of longitudinally extending individual sections. The plurality of individual sections includes a bow section. The bow section is the forwardmost individual section and is hydrodynamically shaped to enhance maneuverability of the pontoon in water. Valve means communicate with the shell for selectively inflating and deflating the pontoon.

Abstract: A watercraft comprising a body, two inflatable floatation members, a drive assembly, a steering assembly and a seat wherein the body portion of the watercraft is foldably collapsible from an operative configuration to a transportable configuration. When in its transportable configuration, the watercraft body forms a compact storage case adapted to accommodate all of the elements of the watercraft for easy and convenient transportation. The storage case generally includes a first compartment wherein the drive assembly and seat are stored and a second compartment accommodating the floatation members and other miscellaneous components of the watercraft.

Abstract: A collapsible boat whose lateral hull walls are retractable to reduce the width of the boat is provided. Port side and starboard side lateral hull walls are pivotally connected along their lower edges to the central hull section of the boat. When extended, the lateral hull walls form a sloping hull wall extending upward and outward from the bottom of the central hull section. When retracted, the lateral hull walls pivot inward to reduce the width of the boat. Port side and starboard side braces are pivotally connected to the upper lateral edges of the central hull section for movement between an engaged position and a retracted position. In the engaged position, the braces connect to the lateral hull walls to keep them in their extended position. In the retracted position, the braces are pivoted inward to allow the hull walls to retract.

Abstract: A collapsible portable boat with enhanced rigidity includes main skeleton frame and hull, including an end stem section and gunwales connected to each other by a gunwale connector. The hull is made of flexible material, and has a floor section affixed to that portion of the hull section which defines the bottom of the boat and which is disposed between the stringers and the flexible material of the hull. The skeleton frame includes a plurality of support stringers running the length of the boat along the bottom and sides of the boat, including support formers arranged transverse to the lengthwise support stringers. The support stringers themselves include a plurality of short sectional support elements which are affixed to one another by tension between the short sections, including tension between the skeleton structure and the outer flexible hull, which tension substantially prevents longitudinal hull flex.

Abstract: A floatable luggage carrier, for pickup trucks and snowmobiles, convertible into a camper and a trimaran, comprises a rectangular floatable main vessel. A rectangular floatable wing vessel is hinged along each of the longitudinal side walls of the main vessel, at the top. The wing vessels turn from a position side-by-side with the main vessel to an upside-down position over the main vessel: where the wing vessels side-by-side may define a trimaran and a camper, and in the upside-down position over the main vessel define a top for a luggage carrier, the luggage carrier being the main vessel, slidable into a loading platform of a pickup truck and usable with a snowmobile.

Abstract: A boat having bottom and side panels. A yieldable diaphragm has a seal between the diaphragm and the panels. A motor mount on a rear seat board projects rearwardly and beyond the diaphragm to present a support for a motor. A sailboat has a rudder controlled by a tiller. Another motor mount is rotatably mounted on the sides of the boat so that it serves as a seat or a mounting panel for a boat. A diaphragm can be placed on the bottom of the boat and then shifted rearwardly so that tongues or projections of rubber on the bottom and sides of the diaphragm can be moved rearwardly and received in sealing relationship with forwardly facing, open end slots on the bottom and side panels of the boat.

Abstract: The present invention relates to a collapsible multi-hulled vessel capable of opening and collapsing with line(s). The vessel sails in full width, open position yet collapses to sufficient size to permit easy transport and storage. The mast and rigging remain intact during the opening and collapsing procedure thereby further easing the change. Central hinging, containment doors, and containment door latching mechanisms provide added ease of operation and security.

Abstract: An amphibian bicycle wherein the central screw portion for the rear wheel hub part coupled with the large circular disc plate, and that for the inner body end coupled with the small circular disc plate have screw portions in a direction contrary to that for the gears, whereby loosening of the gears is prevented in the case of fastening the large circular disc plate integral with the multi-stage gears with the bolts during its forward and backward motions on the water. In the case of operations on land, all the related bolts are separated for the driving operation.In case of operation on water, the air tubes having a plurality of air chambers, semi-circle frames and fixing pipes uniformly distribute and support the weight of the bicycle and the human body.

Abstract: A variable width boat includes a plurality of hulls and a width varying arrangement connected to and between the hulls for selectively moving the hulls between a closed, folded position and an extended, unfolded position in which the hulls are laterally spaced apart from one another. The variable width arrangement maintains the hulls in an upright, longitudinally fixed, substantially parallel relationship as the hulls are moved laterally between the closed and extended positions. In another aspect of the invention, a mast for use in a sailboat includes a mast assembly having a plurality of telescoping mast sections. The mast sections are arranged to collapse telescopically to permit the height of the mast to be reduced. The mast also includes a mast raising arrangement for raising and lowering the mast. In one preferred embodiment, the mast further includes a plurality of profiled sail supporting ribs each having a peripheral edge.

Abstract: A collapsible tension-compression variable hull structure that collapses and stores substantially flat, yet deploys in seconds without additional parts or accessories. The tension boat design is a unique prestressed structure that strengthens the hull, reduces the need for ribs and makes the hull easily collapsible for storage and transport. Basically the present invention in it's most simple form or embodiment is a boat comprised of five simple parts: two hard, slightly flexible sides, a waterproof flexible bottom, a line running from bow to stern, and some method of applying tension to shorten the line. In the storage phase, the boat looks like two thin boards with rumpled waterproof plastic attached to the bottom. The sides bow out like an archery bow when tension is applied shortening the line. The exact beam or width of the boat depends on the amount of tension on the line.

Abstract: A collapsible boat having a contoured hull shape is disclosed in which the individual component surfaces of the hull may be folded both longitudinally and transversely via disengageable clamping mechanisms that maintain the boat water-tight when it is fully assembled. The lateral edges of the individual hull components, made preferably of aluminum, are profiled so they may be pivoted around a common axis into a relative position where they press together against one another to form a water-tight, longitudinally stable hull.

Abstract: A folding collapsible power boat including a hull consisting of a forward hull section and an aft hull section longitudinally hinged together, two pairs of floats respectively bilaterally hinged to the forward hull section and the aft hull section and moved between the non-operative position, in which the floats are received inside the forward and aft hull sections, and the operative position, in which the floats are closely attached to two opposite sides of the forward and aft hull sections, and a stretcher unit having a cross bar inserted through a transverse groove between the forward and aft hull sections and two parallel tie rods joined by the cross bar and bridged over the floats to hold them in the operative position.

Abstract: A light weight and portable pond boat. The boat includes a frame designed to be flexible and readily disassembled. The frame is supported on a pair of inflatable pontoons and can be positioned along their length, without requiring deflation, to adjust the trim of the boat. A propulsion mechanism is removably mounted to the frame and includes a set of pedals which drive a propeller. The angle at which the propulsion mechanism is carried by the frame is also adjustable to vary the boat's draw requirements. The propulsion mechanism includes a mechanism that enables it to "kick-up" when a submerged object is contacted, lessening damage to the propeller. A steering mechanism and an adjustable seat are also removably mounted to the frame. With all of its components being detachable, capable of being disassembled or deflated, the boat can be packed within a motor vehicle enhancing transportation and storage.

Abstract: A boat having bottom and side panels. A yieldable diaphragm has a seal between the diaphragm and the panels. A motor mount on a rear seat board projects rearwardly and beyond the diaphragm to present a support for a motor. A sailboat has a rudder controlled by a tiller. Another motor mount is rotatably mounted on the sides of the boat so that it serves as a seat or a mounting panel for a boat. A diaphragm can be placed on the bottom of the boat and then shifted rearwardly so that tongues or projections of rubber on the bottom and sides of the diaphragm can be moved rearwardly and received in sealing relationship with forwardly facing, open end slots on the bottom and side panels of the boat.

Abstract: A catamaran has a collapsible frame and a pair of elongated pontoons spacedly secured in collapsible frame. The frame includes fore and aft cross bar sub-frame members and a pair of longitudinally extending sub-frame members and a support platform supported on the frame. Each said longitudinally extending sub-frame member being molded and including a pontoon embracing longitudinal cavity which is the length of the longitudinally extending sub-frame member, and a pair of parallel longitudinal edges, one longitudinal edge at each side of the longitudinal cavity, respectively. A first of the longitudinal edges has a slot therein and the other of the longitudinal edges has a shape complementary to the longitudinal slot whereby pairs of longitudinal edges of the pair of molded sub-frame members, respectively, can interfit such that the concavities face each other to form a storage space for the pontoons and the fore and aft tubular sub-frame member when not in use.

Abstract: A suitcase boat in accordance with the invention comprises a platform or hull for supporting a person and/or objects while the boat is floating on the water and the hull comprises a plurality of pan sections interconnected along a transverse axis normal to a longitudinal axis of the boat when the pan sections are in an extended position end to end. The pan sections are relatively foldable or pivotable about the transverse axis to a confronting position forming a hollow rectangular enclosure similar to a suitcase for carrying a plurality of detached flotation elements, seats and other components of the boat. The flotation elements are detachably securable to the pan sections in an extended position for supporting the boat on the water. The flotation elements are dimensioned for containment within the hollow enclosure when the pan sections are in the confronting position for easy carrying.

Abstract: A boat including a main hull, a first pontoon hingedly connected to the main hull, and a second pontoon hingedly connected to the main hull on an opposite side of the main hull from the first pontoon. The first and second pontoons have wheels extending outwardly beyond a surface of the first and second pontoons. The first pontoon is selectively movable between a first position extending outwardly of the main hull and a second position extending below the main hull. The first wheel extends below the first pontoon when in the second position. The second pontoon is also selectively movable between a first position extending outwardly from the main hull and a second position extending below the main hull. The second wheel extends below the second pontoon when in the second position. A first strut section extends between the main hull and the first pontoon. A second strut section extends between the main hull and the second pontoon. The strut sections include deck surfaces extending across the boat.

Abstract: A suitcase boat in accordance with the invention comprises a relatively flat, stiff platform for supporting a person and/or objects while the boat is on the water. The platform includes a plurality of rectangular sections hingedly interconnected along parallel axes normal to the longitudinal axis of the boat. The sections are relatively foldable at right angles along the transverse axes to form a hollow rectangular enclosure similar to the form of a rectangular suitcase. A plurality of floatation elements are provided adapted to support the platform on the water when the sections are unfolded or extended in substantially coplanar alignment. The floatation elements are dimensioned for containment within the hollow enclosure when the sections are folded into suitcase form.

Abstract: A collapsible boat comprising at least one pair of longitudinally hingedly interconnected base panels whose outer edges are hinged to side panels and a stern panel, the hinged rotation of the panels being such that when the boat is erected the side, stern and base panels hinge open to their maximum extent, the side panels being attached to vented compartments which admit and retain air when the boat is erected and thus constitute buoyancy tanks.

Abstract: A frame for an inflatable catamaran, consisting of an inner frame each side of which has two pairs of side frames pivoted to it; inflatable tubes forming the hulls of the catamaran are secured on each side of the frame, by securing the side frame to the tubes at spaced apart positions; the frame is arranged to fold substantially flat for storage.

Abstract: A portable collapsible boat comprises a body formed of a bottom and a pair of sides which are integrally molded with the bottom. The sides are elastically flexible so as to be foldable to horizontal positions overlying the bottom, and unfoldable to upright positions. A bow support plate and a stern support plate can be inserted generally horizontally between upper portions of the sides to retain the sides in their unfolded state. The support plates are pivotably connected to the sides so as to be automatically lowered to positions inside of the boat when the sides are folded, and automatically raised to positions adjacent upper edges of the sides when the sides are unfolded.

Abstract: A knockdown sailboat adapted to be stowed in a carrying case which includes inflatable hulls, a frame made up of longitudinal sectional tubular members connected securely to spaced-apart lateral tubular frame members, and a telescopic sectional mast stepped to the frame so formed. A carrying case is provided which is made up of two identical halves which serve as deck benches on each respective hull and provide a secure connection between the lateral frame members and the longitudinal frame members. Rigid tubular sectional shroud members are provided between the mast and the frame, and other rigging and spars are provided to make an operable sailboat. All of the spars, masts, and frame can be telescoped and stowed along with the deflated hulls into the carrying case formed by the two halves serving as deck benches.

Abstract: The challeng craft is a paddle craft constructed of wood, plastic, and cloth with two wood interior support frames which are removable. The hull of the paddle craft is constructed of four pieces of wood attached with cloth so that when the interior support frames are removed the craft is foldable. This makes transportation of the craft easy. The paddle craft also had closed cell foam sponsons along the sides of the craft to provide stability in water.

Abstract: The present invention relates to an arrangement for jointing two surfboards as a whole formed by a rectangular frame (4) consisting of two small cross-girders and two small longitudinal girders (5) and (6) having the following component parts:(a) two sets of two arms (7), (8), (9) and (10) hingedly mounted in the plane of the frame;(b) a hinged tripod (15) at one end of the rectangular frame; and(c) a hinged sailholder (21) at the other end of the same frame (4),all this in such a way that the whole of the component parts in the folded-up state falls within the dimensions of the frame (4).

Abstract: A longitudinal groove is provided on each side of three elementary floats having the dimensions of the spars which will be housed therein. The flexing assembly, both at the front and at the rear part, is provided by tubular stirrups held in place by pins or the like. The structure is further designed to be used as a self-emptying small craft by adding a freeboard without transom.

Abstract: A collapsible boat having a pair of side panels and a pair of bottom panels with contiguous edges of adjacent side and bottom panels being hingedly coupled together so that the panels can move from collapsed positions in which they are in side-by-side relationship to expanded positions in which they form the boat with an open rear end. A transom panel is removably mounted on the boat in closing relationship to the open rear end of the boat. Mounting of the transom panel can be accomplished by the use of channel members which receive the side margins of the transom panel. A flexible sealing sheet of plastic or other water impervious material is provided to seal the open rear end of the boat. Thus, there will be no leakage of water into the boat, and the boat will be water-tight, notwithstanding the removability of the transom panel from the boat. The transom panel, when so mounted, can be used to mount an outboard motor on the boat.

Abstract: A multiple hull boat is disclosed including a pair of elongate, generally parallel hull members and a collapsible and expandable apparatus for connecting the hull members. There is a central deck section located generally above and between the hull members and having a pair of side edges that extend generally longitudinally of the respective hull members. First and second deck extension sections are mounted to respective hull members and the central deck section is supported relative to the deck extension sections for transverse movement relative to at least the first deck extension section. The hull members are selectively moveable apart such that the deck extension sections are extended at least partly beyond the respective side edges of the central deck section to expand the boat and are moveable together such that at least the first deck extension section is retracted at least partly within a respective side edge of the central deck section to collapse the boat.

Abstract: A pontoon boat, of the type having two pontoons upon which is erected a platform and railing, for use as a shallow draft vessel, is shown having the platform and railings contructed of a particular collapsible construction specifically adapted for rapid, complete and compact disassembly for ease of over-the-road transportation. Each pontoon is constructed of two end-to-end canoe shaped flotation structures having a perpendicular end for abutment and bolting together, and a tapered end for lessening water drag. On a flat top of each pontoon, mating left and right receiving support points hold the collapsible platform frame. Two indentical, facing collapsible platform frames have pin and socket connections for interlinking with the pontoons, and have a removable floor plate which rests in a hinged bottom support frame. The bottom frame and two hinged side rail sections fold against a fixed back rail.

Abstract: A sailing craft having components that can be readily assembled or disassembled for use includes a conventional mast and sail received in a forward end portion of a U-shaped frame. This frame forward end portion also releasably supports a forward end of the keel. A horizontally extending portion of the frame carries an inflatable inner tube, and the aft end of the frame releasably supports a post provided for at the aft end of the keel. A rudder is pivotably mounted to the aft end of the keel and can be controlled by a cross bar assembly provided at the forward end of the frame and operable by the users feet. The aft end of the frame also defines a backrest and the user can manipulate the craft with one hand on the main sheet and one or both feet on the cross bar leaving his other hand free for other recreational activities.

Abstract: A rigidifier for an inflatable boat of the type having a flexible floor and an inflatable tubular portion around the periphery of the floor forming a cockpit. The rigidifier comprises a floorboard member removable from and receivable in the cockpit to overlay the floor. The member is rigid in one direction to provide rigidity to the floor and collapsible in another direction so that it may be rolled up after being removed from the cockpit. The rigidifier further comprises a framework adapted for detachable connection to the floorboard member to provide rigidity to the floorboard member in another direction so that rigidity is provided to the floor of the boat in substantially all directions.

Abstract: A boat, especially a catamaran, having a rectangular collapsible frame with a one-man mast stepping structure. The tubular frame is comprised of fore, aft and central sub-frame assemblies which can be collapsed so as to be easily car topable and serve as a rack for containing other components of the catamaran. Inflatable hulls are secured in bracket arches on the undersides of the sub-frame assemblies. A rudder frame or cage is pivotally mounted on an aft sub-frame assembly and is adapted to receive a rudder, which is identical to and interchangeable with daggerboards. A system of adjustable rope stays is provided for adjusting the mast.

Abstract: A canoe adapted to be collapsed or disassembled for transportation but which, when assembled is capable of use in sea-going applications, the canoe comprising a fore skeletal half frame and an aft skeletal half frame each comprising a number of separate frame members and releasably connected together by a plurality of over-center locking devices, and a hull skin adapted to sheath the half frames when connected together.

Abstract: A collapsible sail board is disclosed which includes an inflatable flotation member, a multisection mast, a collapsible boom, a sail, and a keel. The mast is detachably mounted on the upper side of the inflatable member so it is universally pivotable with respect thereto, and the keel is detachably mounted on the under side of the inflatable member with an attachment pocket which firmly secures the keel to the inflatable member when the latter is in an inflated condition. The sail board is lightweight and totally collapsible to a size which allows it to be contained within a suitcase so that it is easily transportable.

Abstract: The main hull of a trimaran supports starboard and port side auxiliary hulls or floats by front and rear pairs of horizontally disposed crossarms which are removably fastened at their outer ends to an auxiliary hull, and slidably fastened at their inner ends to the main hull. Port holes coaxially aligned with each starboard/port side pair of crossarms are provided through the starboard and port side sides of the main hull. U-bolt clamps joining the inner ends of the crossarms to the main hull may be loosened, permitting starboard and port side auxiliary hulls to be retracted inwardly by sliding the crossarms through the port holes into the interior of the main hull until the inner facing surfaces of starboard crossarms abut inner facing surfaces of port side crossarms.

Abstract: A pontoon includes a plurality of side-by-side arranged buoyant bodies articulated to one another to allow the pontoon to be placed in a collapsed or in an extended state. Each flanking buoyant body has a bottom face sloping upwardly in an outwardly direction, a top face and a wall element arranged at an outer portion of the flanking buoyant body. The wall element has a position in which it slopes upwardly and projects beyond the top face in an upward direction.

Abstract: A catamaran with a steerable centerboard apparatus includes a housing rotatably mounted on the deck of the catamaran. A centerboard is pivotally mounted to the housing to permit movement between an upper and lower position. A tiller, integral with the housing, extends over the upper surface of the deck and includes an elastic band or rope attached to its end and a hook located on the deck. This inexpensive device keeps the tiller self-centered when not in use. When the user wishes to maneuver the catamaran, he simply turns the tiller in the proper direction with his hand or foot. The improved deck joint comprises a tab extending from deck which fits and mates with a recess located on the hull. The tab is formed to fit snuggly within the recess so that lateral movement is eliminated. Also, a projection located on the lower surface of the tab is received within a cavity extending in the surface of the hull recess. A pair of straps including a seatbelt type buckle are located on each side of the recess.

Abstract: A foldable boat is made with a seamless low stress hull that is formed from a one piece mold. The boat is assembled with membranes at the bow, stern and sides to seal the boat from water and to enable easy folding. The bow and stern membranes also serve to keep the sides from folding out. A hinged bottom and a hinged side-to-bottom section afford ease of folding and provide substantial resistance to bending after assembly of the boat. Bow and stern boards, side boards and seat boards provide rigidity, reduced slack and act as supports for the boat sections. The boat includes a railing that is locked to the sides and side boards so that migration of the side boards is prevented.

Abstract: The present invention relates to a collapsible boat. The boat is comprised of a flexible water-tight hull-and-deck skin including a deckside cockpit aperture; a bow and forward frame unit for insertion through the aperture toward the bow of the hull-and-deck skin; and a transom and aft frame unit for insertion through the aperture toward the stern of the hull-and-deck skin. A central tensioning unit is provided for insertion through the aperture, the tensioning unit cooperates with the bow and forward frame unit and the transom and aft frame unit so as to simultaneously urge the bow and forward frame unit and the transom and aft unit apart to thereby stretch and tension the hull-and-deck skin. A rigid case assembly is provided for insertion into the aperture and cooperates with the bow and forward frame unit, the transom and aft frame unit and the tensioning unit, the case forming a cockpit for the boat.

Abstract: A collapsible foldaway dinghy is provided and consists of synthetic single skin having panels joined by flexible watertight webs which can be folded into a small package that will fit in a car trunk and cockpit locker. Thwarts having vertical ribs are secured to the sides of dinghy to act as support members and seats.

Abstract: A tiltable upwardly extending supporting arch assembly for supporting a radar antenna and other antenna devices above the roof of a cabin or control bridge superstructure of a boat including a unitary rigid arch member of inverted substantially U-shaped configuration having a generally horizontal transversely elongated top portion and a pair of depending leg portions having feet at their lower ends. The feet are attached to a pair of tilting base mounting assemblies each having a base housing component in the shape of an elongated box shaped housing to be fixed to the roof and having a tiltable top plate member pivoted to the box-shaped housing for movement from a first position disposing the arch member in a raised normal operating position to a second position disposing the arch member in a lower position wherein the leg portions lie substantially parallel to the roof.

Abstract: A boat capable of being assembled, disassembled and transported by one individual and without any tools or special equipment. The boat comprises a superstructure which is substantially of lightweight buoyant material such as foam board, and which includes a pair of ski-like hulls, a longitudinal member removably attached to each hull, and a pair of transverse members removably interconnecting the hulls in spaced relation. A cockpit area is provided between the hulls and transverse members. The superstructure is preferably composed of only three components employed in pairs; the hull members, the longitudinal members, and the transverse members. Each of these components are preferably die cut from the same material, and each component of the superstructure has joint elements integrally formed therewith for interconnecting the components. When used as a sailing craft, a mast is removably attachable to the superstructure and to which a sail assembly is rigged.

Abstract: A boat having a pair of bottom panels provided with respective flaps to cause the stern of the boat to ride relatively high in the water when the boat is driven forwardly in the water by an outboard motor. In one embodiment, the flaps pivot downwardly and provide drag for the stern in response to forward movement of the boat. In two other embodiments, the flaps provide planing surfaces near the stern. The boat can be collapsible in which case the bottom panels mate with resilient side panels to form, when collapsed, a flat sandwich configuration which, by the use of improved straps, can be carried on the top of a vehicle or can be hand-carried. An improved bracket for the stern of the boat is used to permit positive attachment of an outboard motor to the boat.