deadlight

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deadlight

[′ded‚līt]
(naval architecture)
A strong plate or a cover with light-obstructing baffles fitted over ventilation ports or windows in stormy weather.
A strong glass or plastic window set in the deck or side of a ship to admit light.

fixed light, deadlight, fast sheet, stand sheet, fixed sash

A window or an area of a window which does not open; glazed directly in a fixed frame that does not open.
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