Abstract: A plate structure and keeper define open areas for the reception of boat oars. The keeper is hingedly mounted to the plate structure as well as lockable thereto to prevent oar theft. At one end of the plate structure are appendages which protrude outwardly through brackets mounted on the boat. The brackets define slot-like openings to receive the appendages for holding the plate structure in an elevated operative position. The plate structure is downwardly stowable in a lowered position and confined against fore-and-aft movement upon the appendages being reorientated in the slot-like openings accomplished by lifting and downward rotation of the plate structure.

Abstract: An auxiliary seat for a surfboard comprises a rectangular tube-form frame having two U-shaped sections telescopically connected to form the longer sides of the rectangle. A first section has a raised end for a footrest. A second section has a third U-shaped tube-form frame connected thereto to form a foldable back. Two crossmembers are fastened to the frame for attaching it to a surfboard. Expandable sleeves couple one of these crossmembers to a mast housing and the other to a casing on the surfboard.

Abstract: A lightweight portable rowing apparatus structure, which, when positioned in the lower interior portion of a watercraft's hull, is held in place by the weight of an oarsman. The rowing apparatus does not attach to the hull and may be easily removed from the watercraft. The apparatus includes an oar rigger, a captively held roller seat, a foot rest for each foot of the oarsman and a control network for simultaneously disengaging the bindings from the oarsman's feet during emergencies. The structural configuration of the rowing apparatus allows forces, when they are exerted by the feet of the oarsman, to be directly transmitted to the oar riggers.

Abstract: A bow facing rowing arrangement for a boat (1) comprises an outrigger support (8) having a first pivotal connection (6) for connection of a respective oar (5) or oar support (51) to the outrigger support at or in proximity to an inboard end (16) of the oar (5). The outrigger support (8) is mounted on a base support (15) so as to be reciprocably displacable longitudinally of a boat with simultaneous pivotal movement about a generally vertical axis (10) spaced substantially from the inboard end of the outrigger support in the direction away from that in which the outrigger extends outboard of the base support (15). A foot engagement (13) connectable to the outrigger support (8) via a drive transmission (11) formed and arranged so that the effective pivotal axis P of the outrigger support (8) is substantially inboard of the actual pivotal connection (10) therebetween.

Abstract: An oarlock comprising a base, a front leg extending upward therefrom and having a rearwardly extending top portion, and a rear leg extending upward from the base and having a forwardly extending top portion. The top portion of the rear leg is spaced from the top portion of the front leg and projects above and forward of a top end of the front leg. The legs form a ring for holding an oar, and the top portions of the legs form an opening for passing the oar into and out of the interior of the ring.

Abstract: A device to hold a canoe paddle in vertical position at either end of a canoe and having its blade submerged to serve as a keel to stabilize the otherwise tipsy craft and to greatly facilitate maneuverability by maintaining direction specially under windy conditions. The holder includes a bridge-like support bracket supporting an axially-rotatable transverse shaft extending outwardly over one side of the canoe. The outer end of the shaft carries a clamp to hold the upper shaft portion of the paddle. A resilient rotation stop is provided with the support bracket, so that the paddle blade rotatably yields when it strikes an under-water obstacle. Also, the paddle may be releasably locked in a non-use position parallel to the canoe gunwale.

Abstract: An oar rest for row boats includes a generally U-shaped clamp having spaced apart mounting arms which are joined at one end by an elongated bar section. One of the arms adjacent its distal end has a clamping jaw portion which faces the other arm. A clamping screw is threaded into the other arm and carries on its inner end a clamping pad operatively juxtaposed with respect to the jaw portion. A pair of spaced retaining fingers are fixedly secured to the bar section and extend in a direction away from the clamping arms. These retaining fingers are spaced in a direction parallel to the direction of spacing between the clamping arms, the spacing between the fingers being less than that between the arms but sufficient to receive therebetween the blade of an oar.

Abstract: A rowing boat 10 has a fixed seat 14 and a movable foot stretcher 16 slidably mounted in guides 15. A swinging outrigger arm 17 is provided to support an oar by means of row lock 22 at its outer end. The inner end of outrigger 17 is pivotally mounted on a vertical axis 21. A coupling link 24 connects the stretcher to the outrigger 17, whereby as the stretcher is moved fore-and-aft during rowing the outrigger 17 is pivoted about axis 21. The link 24 is connected to the outrigger 17 at a point which is adjustable, and is always inboard of the rowlock. In an alternative embodiment the outrigger 17 is provided with a lifting member 33 which assists in raising the blade of the oar.

Abstract: An oarlock horn member is supported, at an appropriate tilt, above a base plate from a winch such as is commonly used on each side of the cockpit of a sailboat. The underside of the base plate has a locking type plug of the kind used to engage and lock in a winch handle for cranking the winch. When the winch is not in use for trimming sails, it can be converted into an oarlock pivot by locking in the present oarlock, to provide auxiliary propulsion for small cruising sailboats for use in calm weather or for maneuvering in harbors, either when the sailboat is not equipped with an engine, or when the engine is out of fuel, or otherwise out of service, or in sailboat races that permit rowing in order to enliven calm weather contests.