46 CFR § 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.
---identifier: "/us/cfr/t46/s169.631"source: "ecfr"legal_status: "authoritative_unofficial"title: "46 CFR § 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces."title_number: 46title_name: "Shipping"section_number: "169.631"section_name: "Separation of machinery and fuel tank spaces from accommodation spaces."chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"subchapter_number: "R"subchapter_name: "NAUTICAL SCHOOLS"part_number: "169"part_name: "SAILING SCHOOL VESSELS"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"authority: "33 U.S.C. 1321(j); 46 U.S.C. 3306, 6101; Pub. L. 103-206, 107 Stat. 2439; E.O. 11735, 38 FR 21243, 3 CFR, 1971-1975 Comp., p. 793; DHS Delegation 00170.1, Revision No. 01.4; § 169.117 also issued under the authority of 44 U.S.C. 3507."regulatory_source: "CGD 83-005, 51 FR 896, Jan. 9, 1986, unless otherwise noted."cfr_part: "169"---
Identifier
/us/cfr/t46/s169.631
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
Coast Guard, Department of Homeland Security
Authority
33 U.S.C. 1321(j); 46 U.S.C. 3306, 6101; Pub. L. 103-206, 107 Stat. 2439; E.O. 11735, 38 FR 21243, 3 CFR, 1971-1975 Comp., p. 793; DHS Delegation 00170.1, Revision No. 01.4; § 169.117 also issued unde... 33 U.S.C. 1321(j); 46 U.S.C. 3306, 6101; Pub. L. 103-206, 107 Stat. 2439; E.O. 11735, 38 FR 21243, 3 CFR, 1971-1975 Comp., p. 793; DHS Delegation 00170.1, Revision No. 01.4; § 169.117 also issued under the authority of 44 U.S.C. 3507.
# 169.631 Separation of machinery and fuel tank spaces from accommodation spaces.(a) Machinery and fuel tank spaces must be separated from accommodation spaces by watertight or vapor tight bulkheads of double diagonal wood, marine plywood, steel plate, or equivalent construction.(b) On vessels less than 90 feet in length, segregation may be by means of a watertight or vapor tight engine box.