DSC & Alpha-Numeric ID Flashcards
A typical call sign for a large container ship under US flag would be:
KBZY
What would the number 1090 indicate?
A coast station SITOR (NBDP) SELCAL number.
Which one of the following is a ship station SELCAL?
11243
Which of the following is the call sign for USCG coats station?
NMN
What type of station would be assigned the call sign WAB2174?
Tug boat
What number will a ship station use to identify itself using SITOR (NBDP)?
Five digit SELCAL or 9 digit SELCAL number identical to MMSI.
What is the MID?
Maritime Identification Digits
How many digits are in the MID (Maritime Identification Digits)?
3
What does the MID (Maritime Identification Digits) signify?
Nationality
Which of the following numbers indicates a US flag ship station?
338426791
Which of the following MMSI numbers indicates a US flag ship station?
303236824
Which of the following numbers indicates a ship station MMSI?
623944326
A DSC call is received from a station with a MMSI number of 003669991. What type of station made the call?
A US coat station
A valid MMSI number for a DSC call to a specific group of vessels is:
030327931
A MMSI 030346239 indicates what?
Group MMSI
Which of the following statements concerning MMSI is true?
All MMSI numbers are 9 digits and contain an MID
Which of the following statements concerning MMSI is false?
All Coast Station MMSI must begin with the MID then 2 zeros.
True answers:
All Coast station MMSI must begun with 2 zeros.
A group call must begin with single zero followed by the MID.
The first 3 digits of a ship MMSI comprise the MID,
Which of the following statements concerning MMSI is true?
None of the answers are correct.
Which of the following would indicate an Inmarsat-B terminal?
A 9 digit number always starting with 3.
Which of the following would indicate an Inmarsat-B terminal?
325468325
Which of the following would indicate an F77 terminal?
766832922
Which of the following would indicate an F77 terminal?
765044177
Which of the following would indicate an Inmarsat-B terminal?
366632824
Which of the following would indicate an F77 terminal?
A 9 digit number always starting with 76
You receive a TELEX with sender’s I.D. of 433863491. What type of terminal send this message to your vessel?
Inmarsat-C
You receive a TELEX with sender’s ID of 436640927. What type of terminal send this message to your vessel?
Inmarsat-C
Which if the following would indicate an Inmarsat-C terminal?
436682433
Which of the following would indicate an Inmarsat-C terminal?
430346275
Which of the following would indicate an Inmarsat-C terminal?
436682011
Which of the following would indicate an Inmarsat-C terminal?
A 9 digit number always starting with 4