{"data":{"id":"us/46-cfr-179.360","jurisdiction":"us","citation":"46 CFR 179.360","heading":"Watertight integrity.","body":"(a) A hatch exposed to the weather must be watertight, except that the following hatches may be weathertight:\n(1) A hatch on a watertight trunk that extends at least 305 millimeters (12 inches) above the weather deck;\n(2) A hatch in a cabin top; and\n(3) A hatch on a vessel that operates only on protected waters.\n(b) A hatch cover must:\n(1) Have securing devices; and\n(2) Be attached to the hatch frame or coaming by hinges, captive chains, or other devices of substantial strength to prevent its loss.\n(c) A hatch cover that provides access to accommodation spaces must be operable from either side.\n(d) A weathertight door must be provided for each opening located in a deck house or companionway. Permanent watertight coamings must be provided as follows:\n(1) On a vessel on an exposed or partially protected route, a watertight coaming with a height of at least 150 millimeters (6 inches) must be provided under each weathertight door in a cockpit or a well, or on the main deck of a flush deck vessel.\n(2) On a vessel on a protected route, a watertight coaming with a height of at least 75 millimeters (3 inches) must be provided under each weathertight door in a cockpit or a well.\n(3) The height of the watertight coaming for a hinged watertight door need only be sufficient to accommodate the door.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER T—SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS)","PART 179—SUBDIVISION, DAMAGE STABILITY, AND WATERTIGHT INTEGRITY","Subpart C—Watertight Integrity Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"be072002e2abfacebd83358ab3c1977271fe715de05fc6c96f8c0534992eed49","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-179.350","next":"us/46-cfr-180.10"},"notice":"GroundRules: Original legal text. Not legal advice."}