46 C.F.R. § 78.47-10 Manual alarm boxes.
Title 46 - Shipping
(a) In all new installations, manual alarm boxes shall be clearly and permanently marked “IN CASE OF FIRE BREAK GLASS.” Existing boxes not so marked with the same or equivalent wording, shall be identified either on the box or adjacent bulkhead in at least (b) [Reserved]
Title 46: Shipping
PART 78—OPERATIONS
Subpart 78.47—Markings for Fire and Emergency Equipment, Etc.
§ 78.47-10 Manual alarm boxes.

