{"operation":"document","citation":"49 CFR 176.57","title":"Supervision of handling and stowage.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) Hazardous materials may be handled or stowed on board a vessel only under the direction and observation of a responsible person assigned this duty.\n\n(b) For a vessel engaged in coastwise voyages, or on rivers, bays, sounds or lakes, including the Great Lakes when the voyage is not foreign-going,","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-176-57.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-176-57.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-176-57","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-176.57","body":"(a) Hazardous materials may be handled or stowed on board a vessel only under the direction and observation of a responsible person assigned this duty.\n\n(b) For a vessel engaged in coastwise voyages, or on rivers, bays, sounds or lakes, including the Great Lakes when the voyage is not foreign-going, the responsible person may be an employee of the carrier and assigned this duty by the carrier, or a licensed officer attached to the vessel and assigned by the master of the vessel.\n\n(c) For a domestic vessel engaged in a foreign-going or intercoastal voyage, the responsible person must be an officer possessing an unexpired license issued by the USCG and assigned this duty by the master of the vessel.\n\n(d) For a foreign vessel, the responsible person must be an officer of the vessel assigned this duty by the master of the vessel.\n\n[Amdt. 176-30, 55 FR 52689, Dec. 21, 1990]","truncated":false,"body_characters":881}