Which Inmarsat Earth stations would be available for Inmarsat-C traffic if the vessel is off the Pacific Coast of the United States but logged-in to the AOR-W satellite?

The correct answer indicates that Southbury (USA), Burum (Netherlands), or EIK (Norway) are the available Inmarsat Earth stations for a vessel off the Pacific Coast of the United States, logged into the AOR-W satellite. The AOR-W (Atlantic Ocean Region - West) satellite services vessels and allows for communication through specific Earth stations that fall within its coverage.

In this scenario, the Southbury Earth station is particularly relevant because it is located in the USA, directly serving vessels in U.S. waters. Burum in the Netherlands and EIK in Norway are also known to provide reliable service to the AOR-W satellite, thereby supporting vessels positioned in the Pacific region. Each of these stations has the necessary infrastructure to handle Inmarsat-C traffic, which is crucial for maritime communications such as message handling, distress signaling, and safety.

Other options include stations either not aligned with the AOR-W coverage or located too far from the Pacific Coast to be effectively utilized for that satellite's service. Thus, B represents the most suitable choice, as it includes stations that provide the appropriate connection for Inmarsat-C traffic for a vessel in that specific maritime region.