Chatterton, E. Keble (Edward Keble), 1878-1944 · London : Sidgewick & Jackson, litd · leaf 350
de known in1731, and the sextant in 1761. Perhaps, as the sailingmasters in the Navy had to provide their own nauticalinstruments, there was not such an incentive to ac-custom themselves to new methods as might otherwisehave been the case. Till the time when Hadleys quadrant was adopted,masters had…
Ships · Shipbuilding · Navigation
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