Boots – shoes – and leggings
Patent
1976-02-18
1977-09-27
Dildine, Jr., R. Stephen
Boots, shoes, and leggings
340 3R, 340 6R, 340 16R, 364460, 364815, 364817, G06G 722, G06G 770, G06G 778
Patent
active
040513505
ABSTRACT:
The invention concerns a position measuring device used for measuring the position of a vessel equipped with three hydrophones arranged at the apexes of a triangle in relation to a transmitting beacon on the sea bed. Measuring of the differences in the travel time between the beacon and the various hydrophones as well as of the depth of the water and analogic calculating of the position of the vessel in a simple way and without approximation. Application to offshore drilling vessels.
REFERENCES:
patent: 3559161 (1971-01-01), Raudsep
Dildine, Jr. R. Stephen
Societe Anonyme dite: Compagnie Industrielle des Telecommunicati
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