C.F.R. » Title 46 » CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY › SUBCHAPTER D—TANK VESSELS › PART 32—SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS › Subpart 32.56—Structural Fire Protection for Tank Ships With a Keel Laying Date On or After January 1, 1975

46 C.F.R. § 32.56-20

Insulation of exterior boundaries: Superstructures and deckhouses—T/ALL

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The following exterior boundaries of superstructures and deckhouses that contain accommodation, service, and control spaces, except wheelhouses, must be insulated to “A-60” Class:

(a) The exterior boundaries that face the cargo area.

(b) The portion of the exterior bulkheads and decks within 3 meters (10 feet) of these boundaries.