Sec. 80.1087  Ship radio equipment--Sea area A1.

    This section contains the additional equipment requirements for 
ships that remain within sea area A1 at all times.
    (a) In addition to meeting the requirements of Sec. 80.1085, ships 
engaged on voyages exclusively in sea area A1 must be provided with a 
radio installation capable of initiating the transmission of ship-to-
shore distress alerts from the position from which the ship is normally 
navigated, operating either:
    (1) On VHF using DSC; or
    (2) Through the polar orbiting satellite service on 406 MHz (this 
requirement may be fulfilled by the 406 MHz EPIRB, required by 
Sec. 80.1085(a)(6), either by installing the 406 MHz EPIRB close to, or 
by allowing remote activation from, the position from which the ship is 
normally navigated); or
    (3) On MF using DSC if the ship is engaged on voyages within 
coverage of MF coast stations equipped with DSC; or
    (4) On HF using DSC; or
    (5) Through the INMARSAT geostationary satellite service if within 
INMARSAT coverage. This requirement may be fulfilled by an INMARSAT ship 
earth station capable of two way communication.
    (b) The VHF radio installation, required by Sec. 80.1085(a)(1), must 
also be capable of transmitting and receiving general 
radiocommunications using radiotelephony.