---
kind: "section"
citation: "47 C.F.R. § 80.1069"
title: "47"
number: "80.1069"
heading: "Maritime sea areas."
url: "https://uscodex.org/cfr/47/80.1069"
---

# §80.1069. Maritime sea areas.

- (a) **For the purpose of this subpart, a ship's area of operation is defined as follows—**
  - (1) **Sea area A1.** An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available as defined by the International Maritime Organization.
  - (2) **Sea area A2.** An area, excluding sea area A1, within the radiotelephone coverage of at least one MF coast station in which continuous DSC alerting is available as defined by the International Maritime Organization.
  - (3) **Sea area A3.** An area, excluding sea areas A1 and A2, within the coverage of an INMARSAT geostationary satellite in which continuous alerting is available.
  - (4) **Sea area A4.** An area outside sea areas A1, A2 and A3.
- (b) Maritime sea areas are delineated in the International Maritime Organization Publication GMDSS Master Plan of Shore-Based Facilities. The Master Plan can be purchased from the International Maritime Organization, 4 Albert Embankment, London SE1 7SR, United Kingdom.

## Notes

### Authority

Authority: 47 U.S.C. 151-155, 301-609; 3 U.S.T. 3450, 3 U.S.T. 4726, 12 U.S.T. 2377.

### Source

Source: 51 FR 31213, Sept. 2, 1986, unless otherwise noted.