Skip to main content
IALA
COLREG
COLREG
IALA
Lights
GMDSS
Language
EN
ES
CA
Quick sprint
Sign in
1/10
0✓
A ship is 600 NM offshore, outside any A1/A2 but inside Inmarsat-C coverage, with an approved Inmarsat-C terminal. For this ship the area is:
A
Still A2 because of MF sky-wave at night
B
A3 via Inmarsat-C
C
A4, because outside A2
D
A1 if any VHF coast station exists