(marinelink) Between July 27 and August, 2010, while conducting development testing
of its Nationwide Automatic Identification System (NAIS), the Coast
Guard inadvertently tele-commanded most AIS users transiting the
Eastern United States between lower Connecticut and North Carolina to
switch to AIS frequencies other than the AIS default frequencies
(161.975 MHz - Channel 87B - 2087 and 162.025 MHz - Channel 88B -
2088). As a result, those users within uniquely defined channel
management regions (as shown in the picture) will neither see nor be
seen by vessels operating on the default AIS channels when within these
regions. Similarly, vessels operating on default frequencies will not
see or be seen by those vessels that were inadvertently switched to
other frequencies. No other AIS users or areas are impacted.
READ MORE
(marinelink) Between July 27 and August, 2010, while conducting development testing
of its Nationwide Automatic Identification System (NAIS), the Coast
Guard inadvertently tele-commanded most AIS users transiting the
Eastern United States between lower Connecticut and North Carolina to
switch to AIS frequencies other than the AIS default frequencies
(161.975 MHz - Channel 87B - 2087 and 162.025 MHz - Channel 88B -
2088). As a result, those users within uniquely defined channel
management regions (as shown in the picture) will neither see nor be
seen by vessels operating on the default AIS channels when within these
regions. Similarly, vessels operating on default frequencies will not
see or be seen by those vessels that were inadvertently switched to
other frequencies. No other AIS users or areas are impacted. READ MORE