33 CFR 401.32 - Cargo booms
(a) Every vessel shall have cargo booms secured in a manner that affords maximum visibility from the wheelhouse.
(b) Cargo or containers carried, forward or aft, on deck shall be stowed in a manner that:
(1) Affords an unrestricted view from the wheelhouse for the purpose of navigation; and
(2) Does not interfere with mooring equipment.
(c) Seaway Traffic Control Center shall be notified of the height of deck cargo prior to transiting the Seaway or when departing from a Port or Wharf within the Seaway.