Which of the following would indicate an F77 terminal?

The identification of an F77 terminal can be established through its unique terminal identification number, which follows a specific format. The F77 terminals use the format of a 9-digit number starting with "765".

In this case, the correct answer starts with "765", making it an identifiable F77 terminal. This numerical designation is critical within the context of the Global Maritime Distress and Safety System (GMDSS), as it helps ensure proper communication and identification between vessels and shore stations.

Other choices do not conform to this distinctive format required to be classified as F77 terminals. The other options either start with different digit patterns or do not meet the expected number of digits in the format. Thus, the format and starting digits effectively distinguish an F77 terminal from other types.