Which CES should a GMDSS Radio Operator select if his/her vessel is off the Atlantic Coast of the United States?

Correct Answer: Option A — Southbury

The Southbury CES, located in Connecticut, serves as the primary gateway for Inmarsat-C traffic in the Atlantic Ocean Region. GMDSS operators must select the appropriate CES based on their vessel's location to ensure reliable message routing and to minimize costs associated with satellite link duration and terrestrial network access.