A New and Easy Method of Finding the Time at Sea, and for Ascertaining the Variation of the Compass
, by Hay, James- ISBN: 9781437461701 | 1437461700
- Cover: Paperback
- Copyright: 1/31/2009
All Requiring No Calculation Except A Little Addition Or Subtraction, And Independent Of Knowing Either Latitude Or Longitude Within Two Degrees.