RADIO REPORTING (CALLING-IN) POINTS Vessels sailing along Uruguayan waters are required to participate in the Traffic Control Centres and Maritime Information System. For further details, see Published Maritime Information (IMP Uruguay, Uruguayan Coast Guard)

A - Control Montevideo Prefectura Radio - CWC 39 - 11 VHF
C - Control Colonia Prefectura Radio - CWC 23 - 16 VHF
D - Control Colonia Prefectura Radio - CWC 23 - 16 VHF
E - Control Sauce Prefectura Radio - CWC 27 - 16 VHF
--  Control Riachuelo Prefectura Radio ----- 16 VHF