33 CFR § 156.320 - Maximum operating conditions.

Unless otherwise specified, the maximum operating conditions in this section apply to tank vessels operating within the lightering zones designated in this subpart.

(a) A tank vessel shall not attempt to moor alongside another vessel when either of the following conditions exist:

(1) The wind velocity is 56 km/hr (30 knots) or more; or

(2) The wave height is 3 meters (10 feet) or more.

(b) Cargo transfer operations shall cease and transfer hoses shall be drained when—

(1) The wind velocity exceeds 82 km/hr (44 knots); or

(2) Wave heights exceed 5 meters (16 feet).