46 C.F.R. § 108.461 Coamings.
Title 46 - Shipping
Each machinery flat in a space that has a foam extinguishing system must have coamings that are high enough to retain spilled oil and foam on the flat on all openings except deck drains.
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PART 108—DESIGN AND EQUIPMENT
Subpart D—Fire Extinguishing Systems
Foam Extinguishing Systems
§ 108.461 Coamings.