CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER L—OFFSHORE SUPPLY VESSELS (parts 125 to 135) > PART 125—GENERAL > 125.110—Carriage of flammable or combustible liquid cargoes in bulk.

125.110—Carriage of flammable or combustible liquid cargoes in bulk.

(a) Except as provided by this section, no OSV may carry flammable or combustible liquid cargoes in bulk without the approval of the Commandant (CG-522).
(b) An OSV may carry the following in integral tanks:
(1) Grade-D combustible liquids listed by § 30.25-1 of this chapter, in quantities not to exceed 20 percent of the vessel's deadweight, except that the vessel may carry drilling fluids and excess fuel oil, Grade-E as well as Grade-D, without limit.
(2) Grade-E combustible liquids listed by § 30.25-1 of this chapter, in quantities not to exceed 20 percent of the vessel's deadweight, except that the vessel may carry drilling fluids and excess fuel oil, Grade-D as well as Grade-E, without limit.
(c) An OSV may carry the following in fixed independent tanks on deck: Grade-B and lower-grade flammable and combustible liquids listed by § 30.25-1 of this chapter, in quantities not to exceed 20 percent of the vessel's deadweight.
(d) An OSV may carry hazardous materials in portable tanks, in compliance with part 64 and subpart of this chapter. A portable tank may be filled or discharged aboard the vessel if authorized by an endorsement on the vessel's Certificate of Inspection.
[CGD 82-004 and CGD 86-074, 62 FR 49321, Sept. 19, 1997, as amended by USCG-2002-13058, 67 FR 61279, Sept. 30, 2002; USCG-2009-0702, 74 FR 49234, Sept. 25, 2009]