as a mobile station in the maritime mobile service located on board a vessel which is not permanently moored, other than a survival craft station. 47 C.F.R. § 2.1(c). See Amendment of the Commission's Rules Concerning Maritime Communications, Further Notice of Proposed Rule Making, PR Docket No. 92-257, 10 FCC Rcd 5725, 5725 ¶ 2 (1995). See 47 C.F.R. § 87.373(f). Public correspondence communications are personal or private communications between two or more persons. Public correspondence is defined under the Part 80 Maritime Service Rules as ``[a]ny telecommunication which the offices and stations must, by reason of their being at the disposal of the public, accept for transmission.'' 47 C.F.R. § 80.5. The 156-162 MHz maritime channels are designated numerically in