Dead reckoning navigation instrument

Details Dead reckoning navigation instrument Dead reckoning navigation instrument

1982-06-21

1984-04-17

Stearns, Richard R.

Geometrical instruments

Miscellaneous

Light direction

33431, 33DIG1, 235 61NV, G01C 2120, G06G 116

Patent

active

044426054

ABSTRACT:
A dead reckoning navigation instrument, consisting of magnetically connected components, for navigation watercraft between known waypoints. A trackline on a transparent trackline plate connects the waypoints. A direction line on a transparent direction line plate, oriented perpendicular to the trackline is used to define the next waypoint along a route. A transparent overlay plate provides the speed and distance traveled scales for the dead reckoning navigation function.

REFERENCES:
patent: 1930478 (1933-10-01), Jones
patent: 2114652 (1938-04-01), Dalton
patent: 2826959 (1958-03-01), Schneider
patent: 3013337 (1961-12-01), Hurwitz
patent: 3514582 (1970-05-01), Sanderson
patent: 4120091 (1978-10-01), Borgato
patent: 4347669 (1982-09-01), McEwen

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