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116730150000060_0
headpiece

N021393
The seaman's daily assistant, being a short, easy, and plain method of keeping a journal at sea; In which are contain'd Rules, Shewing How the Allowances for Lee-Way, 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 Mathematicks in the Royal-Navy.
Haselden, Thomas (d. 1740)
Social Sciences
English
printed for J. Mount and T. Page on Tower-Hill
London
1769

6
124
2080

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