... this easterly wind continued, the ship sometimes carrying top-gallant sails and a fore-topmast studding sail, and sometimes running directly before the wind under double-reefed topsails and foresail, progressing at the rate of ten, eleven, and eleven and a half knots. Chronometers were unknown in those days, and lunar observations, owing ... — Jack in the Forecastle • John Sherburne Sleeper
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