Ornament Details
107780050000020_0
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The seaman's daily assistant, being a short, easy, and plain method of keeping a journal at sea, in which are contained rules, shewing how the allowances for leeway, variation, Heave of the Sea, Set of Currents, &c. are to be made, and to correct the Dead-Reckoning by an Observation, in all Cases: And also all the Tables that are any Ways necessary for the Seaman's Use in keeping a Journal. By Thomas Haselden, Late Teacher of the Mathematics in the Royal Navy.
printed for J. Mount, T. Page, W. Mount, and T. Page, jun. on Tower-Hill
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