Which Earth Station would a vessel be utilizing if operating off the Atlantic Coast of the United States?

Correct Answer: Option A — Southbury

Southbury serves as the primary Inmarsat Coast Earth Station (CES) for the Atlantic Ocean Region (AOR). Vessels operating off the Atlantic Coast of the United States utilize this station to access the Inmarsat satellite network for reliable, high-quality voice and data communications, consistent with established GMDSS operational procedures.