Navigational aid

Details Navigational aid Navigational aid

1977-01-25

1979-05-08

Morrison, Malcolm A.

Boots, shoes, and leggings

343112CA, G01S 944

Patent

active

041539354

ABSTRACT:
A navigational aid enables the effect of a course and/or speed alteration of one vessel on the nearest possible approach distance of another vessel to be calculated, using data readily obtainable from a simple relative radar display on said one vessel. The aid comprises a plurality of sealed manually-settable means for individually setting in data inputs respectively representative of the following:

REFERENCES:
patent: 3162757 (1964-12-01), Zaklad
patent: 3195136 (1965-07-01), Klein
patent: 3260478 (1966-07-01), Welti
patent: 3737902 (1973-06-01), O'Hagan et al.
patent: 3757324 (1973-09-01), Litchford
patent: 3939334 (1976-02-01), Roth et al.

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