{"operation":"document","citation":"33 CFR 156.320","title":"Maximum operating conditions.","source_type":"regulation","agency":"United States Coast Guard","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"Unless otherwise specified, the maximum operating conditions in this section apply to tank vessels operating within the lightering zones designated in this subpart.\n\n(a) A tank vessel shall not attempt to moor alongside another vessel when either of the following conditions exist:\n\n(1) The wind velo","machine_formats":{"json":"https://regulus.evalyn.ai/document/33-cfr-156-320.json","markdown":"https://regulus.evalyn.ai/document/33-cfr-156-320.md"},"app_url":"https://regulus.evalyn.ai/document/33-cfr-156-320","source_url":"https://www.ecfr.gov/on/2026-08-18/title-33/section-156.320","body":"Unless otherwise specified, the maximum operating conditions in this section apply to tank vessels operating within the lightering zones designated in this subpart.\n\n(a) A tank vessel shall not attempt to moor alongside another vessel when either of the following conditions exist:\n\n(1) The wind velocity is 56 km/hr (30 knots) or more; or\n\n(2) The wave height is 3 meters (10 feet) or more.\n\n(b) Cargo transfer operations shall cease and transfer hoses shall be drained when—\n\n(1) The wind velocity exceeds 82 km/hr (44 knots); or\n\n(2) Wave heights exceed 5 meters (16 feet).","truncated":false,"body_characters":576}