47 CFR § 80.1093 - Ship radio equipment - Sea areas A1, A2, A3, and A4.
This section contains the additional equipment requirements for ships that sail in all sea areas, i.e., sea areas A1, A2, A3, and A4. Ships fitting in accordance with this section satisfy the requirements denoted in §§ 80.1087, 80.1089, and 80.1091 for sea areas A1, A2, and A3.
(a) In addition to meeting the requirements of § 80.1085 of this part, ships engaged on voyages in all sea areas must be provided with the radio installations and equipment required by § 80.1091(b), except that the equipment required by § 80.1091(b)(3)(ii) and § 80.1091(b)(3)(iii) cannot be accepted as an alternative to that required by § 80.1091(b)(3)(i), which must always be provided.
(b) Ships engaged on voyages in all sea areas also must comply with the requirements of § 80.1091(c).