CFR › Title 46 › Part 173 › §173.00146 CFR §173.001Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEach vessel that is engaged in one of the following activities must comply with the applicable provisions of this part:(a)Lifting.(b)Training (schoolship).(c)Oceanographic research.(d)Towing.