NAVIGABLE SEMICIRCLE Definition & Meaning

navigable semicircle

Nautical.

the less violent half of a cyclone; the half blowing in the direction opposite to that in which the cyclone is moving and in which a vessel can run before the wind.

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Left or navigable semicircle,—Steam and sailing vessels: Bring the wind on the starboard quarter, note the course and hold it.

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They can usually rely upon "riding out" the "navigable semicircle" at anchor.

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