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| Number | Title | Issue Date |
| 4392444 | High stability trimaran A trimaran which includes a main hull, starboard hull, and port hull, has positive stability for up to about 130° inclination of the main hull. The starboard and port hulls are pivotally mounted to the main hull, and the mast is mounted to the main hull ... | 07/12/1983 |
| 4387657 | Centerboard snubber A centerboard snubber is disclosed for use in a sailboat equipped with a weighted centerboard or a swing keel in order to prevent the weighted centerboard or swing keel from retracting into its trunk under the force of gravity, the force of passing water,... | 06/14/1983 |
| 4381725 | Actuators for small sailing craft This invention relates to actuators for small sailing craft. Fins extend downwardly from opposite sides of the craft and pivot together when the craft lists. The pivoting tends to right the craft. When righted, the fins function like centerboards to stabi... | 05/03/1983 |
| 4377123 | Boat stabilizer apparatus A boat stabilizer apparatus comprising as an integral unit a stabilizer fin, a fin support strut to maintain the upright position of the stabilizer fin, moveable baffles attached to the fin to counterbalance laterally moving water, and an elongated shaft ... | 03/22/1983 |
| 4345535 | Sailboat trimming and stabilizing system A system for sailboats for the purpose of maintaining the trim or attitude of the hull in a level position and at the same time adjusting the rigging and keel. The mast is made so that it can tilt to port or starboard and apparatus is provided to produce ... | 08/24/1982 |
| 4326479 | Movable skeg for non-propelled barges An apparatus is disclosed for decreasing yaw of a first vessel when the first vessel is pulled by a second vessel which may alternatively be positioned to lessen water resistance when the first vessel is pushed by the second vessel. The apparatus includes... | 04/27/1982 |
| 4280433 | Underwater appendages for vessels A keel assembly or similar fin-like underwater appendage for a boat is provided which is adjustable to adapt its characteristics to the operating conditions of the boat, for example to optimize hull performance of a sailing boat on opposite tacks. The ass... | 07/28/1981 |
| 4273063 | Ship stabilizer The ship stabilizer comprises at least two retractable fins mounted on both sides of the hull of the ship, housings being formed within the hull below the floating line of the ship for engaging therein the fins in the retracted condition.... | 06/16/1981 |
| 4266496 | Stabilizer means for a surface vessel Apparatus used to stabilize a sea-going surface vessel against pitching, heaving and rolling by means of stabilizer bodies which the vessel carries beneath it. A forward stabilizer body has a horizontal surface area in the range of from 13% to 20% of the ... | 05/12/1981 |
| 4261278 | Gyro-controlled pitch stabilizing system Pitch of a vessel is controlled by trim tabs mounted on the stern of the vessel. The trim tabs are hinged along an axis transverse to the fore-aft direction of the vessel. A hydraulic system changes the plane of the trim tabs in response to a gyro-control... | 04/14/1981 |
| 4182255 | Below waterline deployable hull stabilizing members A mount is provided for support from the side of a boat hull at a level spaced above the waterline of the hull when the latter is at rest and an elongated boom is provided having base and free ends with the base end of the boom supported in stationary pos... | 01/08/1980 |
| 4167050 | Vertical stabilizer for kayak A vertical stabilizer adapted to fit the rear pointed end of a kayak. The stabilizer includes a hollow body which is flared to engage over the rear pointed end of a kayak and a vertical stabilizer plane integrally formed, and depending from, the body. An ... | 09/11/1979 |
| 4095547 | Acceleration measuring device An angular accelerometer incorporates two tilt sensors both connected to a differential amplifier arranged to provide a difference signal which is fed to a first integrator the output of which is fed to a second integrator. The tilt sensors are of the tor... | 06/20/1978 |
| 4061102 | Roll stabilizer for boats A stabilizer device for minimizing the roll of a boat including two plates connected by a hinge and a plurality of bridles attached to the plates so that when the stabilizer is pulled up through the water by the bridles the plates open about the hinge to ... | 12/06/1977 |
| 4041885 | Apparatus for and method of stabilizing a marine vessel in pitch A non-lift or zero average lift bow foil, having similar wing-shaped members defining an angular intersection therebetween with similar dihedral angles, is mounted on a vessel's bow centerline, with the angular intersection approximately parallel to the v... | 08/16/1977 |
| 4040373 | Steering and stabilization apparatus for watercraft Vane members are movably mounted on the hulls of watercraft to serve steering and stabilization functions. Several embodiments are disclosed, some of which rotate between extended and shielded positions, others of which fold to vary the angle at which the... | 08/09/1977 |
| 4023516 | Ship stabilizing systems A ship stabilizing system of the activated-fin type in which each fin has a shaft mounted within a casing adapted for rotation on movement of the fin to and from the operative position, the casing being mounted for rotation in upper and lower bearings so ... | 05/17/1977 |
| 4004536 | Anti-skid boat A boat is provided with an elongated vane extending along each side of the hull. This vane is supported in a closely spaced relationship with the hull's surface to define a longitudinally extending slot. The vanes so positioned reduce the tendency of the ... | 01/25/1977 |
| 3996872 | Hydrofoil vessel A hydrofoil vessel in which the hydrofoils comprise pairs of rotary members which are inclined in a downwardly inboard direction from opposite sides of the hull or body portion of the vessel. The rotary members have foil-shaped peripheral portions extendi... | 12/14/1976 |
| 3990384 | Hull with righting moment producing fins A boat hull including a center depending keel fin is provided and the keel fin includes an upstanding rear edge portion having a horizontally rearwardly opening transverse recess formed therein. An upstanding main fin extending generally longitudinally of... | 11/09/1976 |
| 3982493 | Skid control mechanism for boats The invention is a skid control mechanism for a power boat and particularly for racing craft, comprising longitudinally hinged flaps mounted to opposite sides of the boat bottom and operable by steering mechanism or otherwise to deflect into an open, wate... | 09/28/1976 |
| 3931781 | Stabilizer unit for marine vessels Stabilizer or anti-roll structure for marine vessels. The structure comprises a plurality of fins which are joined together as a unit, and the unit is adapted to be positioned at the side of a vessel below the water line and attached to a rotative or pivo... | 01/13/1976 |
