324

Circa 1810

AMERICAN DECK WATCH LOG SLATE

Double-faced black slate in a pine frame. This is unique, and most likely for recording tables of compass deviation, the angular difference, or error, between magnetic north and compass north.
Left side of slate engraved with columns headed "H" (hour), "K" (knots), "F" (fathoms), "Course", "Winds", "L" (Lee), "W"(way) and one blank. The "H" column has a vertical row of numbers 1-12 and 1-12. At the bottom is another set of columns marked "C" (course), "D" (deviation), "N" (north), "S" (south), "E" (east) and "W" (west).
Height 13.75". Width 9.75".

  • Provenance:
    West Sea Company, Old Town, San Diego, October 2000.
    The Kelton Collection of Marine Art & Artifacts.

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February 24, 2022 9:30 AM EST
East Dennis, MA, US

Eldred's

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