121.202—Restrictions.
        
        (c) 
         Vessels permitted to use liquefied and non-liquefied gases as cooking fuels by 46 Code of Federal Regulations (CFR)  part 147 must meet the requirements of  § 121.240. The use of these fuels for cooking, heating, and lighting on ferry vessels is prohibited by  part 147 in subchapter N of this chapter.