46 C.F.R. § 127.440 Operability of window coverings.
Title 46 - Shipping
Any covering or protection placed over a window or porthole that could be used as a means of escape must be able to be readily removed or opened. It must be possible to open or remove the covering or protection without anyone's having to go onto a weather deck. It may be necessary to break the glass of a window or porthole before removing or opening the covering or protection.
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PART 127—CONSTRUCTION AND ARRANGEMENTS
Subpart D—Construction of Windows, Visibility, and Operability of Coverings
§ 127.440 Operability of window coverings.
