Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
maritime area classification
|
| gptkbp:communicationCoverage |
HF radio
|
| gptkbp:definedIn |
gptkb:International_Maritime_Organization
|
| gptkbp:describes |
Sea areas outside A1, A2, and A3, not covered by Inmarsat geostationary satellites
|
| gptkbp:equipment |
gptkb:EPIRB
HF DSC radio NAVTEX receiver (if within range) |
| https://www.w3.org/2000/01/rdf-schema#label |
sea areas A4
|
| gptkbp:location |
polar regions
remote ocean areas |
| gptkbp:notCoveredBy |
gptkb:MF_radio
VHF radio Inmarsat satellite |
| gptkbp:partOf |
GMDSS sea areas
|
| gptkbp:usedFor |
maritime distress and safety communications
|
| gptkbp:bfsParent |
gptkb:GMDSS
|
| gptkbp:bfsLayer |
7
|