Tactical indicator for bulkhead and other compasses
AssigneeJ & K Shepard Pty. Limited
InventorKevin E. Shephard
Life of this patent
Estimating the term…
Abstract
Yacht racing is becoming more scientific and to assist a skipper in quantifying the shortest course to sail to take advantage of wind direction, a tactical aid is provided. The aid is a device for use in connection with information read from a compass mounted on the yacht. The device comprises a set of interacting members each carrying information concerning a yacht's tactical position to enable the skipper to determine whether or not his course is advantageous or not.
Claims3
A device adapted for use with a compass for tactical yacht racing comprising a compass ring having suitable 0.degree. to 360.degree. markings thereon around the ring;
- and an information ring having markings of at least "wind direction," "tack angle" at 45.degree. on either side of "wind direction;" "start line" at 90.degree. on either side of "wind direction;" "wing mark" at 135.degree. on either side of "wind direction;" said compass ring being rotatable with respect to said information ring, and the device further comprising releasable means for locking the compass ring against rotation with respect to the information ring, and a correction factor ring rotatable with respect to the other rings and releasably attached to the compass ring, said correction factor ring having distinctive markings at least at the positions 0.degree., 135.degree., 225.degree. and 180.degree..
Dependencies are inferred from the claim text.