Nautical words



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Nut (of Anchor). Key piece, on stock, that fits in slot in shank and prevents stock from turning.

Nutation. A 'nodding' of Earth's axis during a period of 18 years 220 days. Caused by variation in the Lunisolar gravitational pull on Earth's equatorial bulge - the variation being due to Moon's maximum declination varying between 18° 18' and 28° 36' in the period. Pole of Equinoctial describes a small ellipse about its mean place. The value of nutation is I8 ½  of arc, that is 9 ¼  above or below its mean value.

Oakum 239 Ocean Plait

Oakum. Rope that has been unlaid and the yarns teased out. Used for caulking seams, filling fenders, and other purposes.

Oar. Rowing implement made of wood and consisting of a blade, a long shaft and a loom that forms a hand-grip. Blade may be flat or curved.



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