Navigation General · Publications & Corrections
Pub. 117 (Radio Navigational Aids) is primarily consulted to obtain information on:
- APredicted tide heights at secondary reference stations
- BDistress, safety, and calling frequencies for maritime mobile service, NAVTEX, and GMDSS✓ Correct
- CLight characteristics and fog signal descriptions for U.S. aids to navigation
- DGreat-circle distance tables between major ports
Explanation
Pub. 117 lists radio navigational aids including NAVTEX broadcast schedules, GMDSS frequencies, marine radiobeacon data, and radiofacsimile weather broadcast information. Light characteristics are found in the Light List; tide predictions are in Tide Tables; and great-circle distances appear in distance tables or are calculated from Pub. 229.
Authority: Bowditch (Pub. 9), Ch. 3
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