Sec. 80.1175  Scope of communications of on-board stations.

    (a) On-board stations communicate:
    (1) With other units of the same station for operational 
communications on the ship.
    (2) With on-board stations of another ship or shore facility to aid 
in oil pollution prevention during the transfer of 250 or more barrels 
of oil.
    (3) With other units of the same station in the immediate vicinity 
of the ship for operational communications related to docking, life boat 
and emergency drills or in the maneuvering of cargo barges and lighters.
    (b) An on-board station may communicate with a station in the 
Business Radio Service operating on the same frequency when the vessel 
on which the on-board station is installed is alongside the dock or 
cargo handling facility.