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Section-d: dsc & Alpha-Numeric id: Key Topic #21: Call Signs and selcaLs

21D1 A typical call sign for a large container ship under U. S. flag would be:

A. KBZY

B. WBX1469

C. NADN

D. KPH

21D2 What would the number 1090 indicate?

A. A ship DSC MMSI number.

B. A coast station SITOR (NBDP) SELCAL number.

C. A coast station DSC MMSI number.

D. A ship station SITOR (NBDP) SELCAL number.

21D3 Which one of the following is a ship station SELCAL?

A. 1104

B. 1502352

C. 11243

D. 0230364973

21D4 Which of the following is the call sign for a U.S.C.G. coast station?

A. NERK

B. KPH

C. WCC

D. NMN

21D5 What type of station would be assigned the call sign WAB2174?

A. Tug boat

B. Container ship

C. Passenger ship

D. Bulk Tanker

21D6 What number will a ship station use to identify itself using SITOR (NBDP)?

A. Four digit SELCAL.

B. Five digit SELCAL or 9 digit SELCAL number identical to MMSI.

C. 9 digit Inmarsat-B I. D. number.

D. 9 digit Inmarsat-C I.D. number.

Answers: 21D1 - A 21D2 - B 21D3 - C 21D4 - D 21D5 - A 21D6 - B

Section-d: dsc & Alpha-Numeric id: Key Topic #22: mmsi- mid and Ship Station I.D. Numbers:

22D1 What is the MID?

A. Mobile Identification Number

B. Marine Indemnity Directory

C. Mobile Interference Digits

D. Maritime Identification Digits

22D2 How many digits are in the MID (Maritime Identification Digits)?

A. 3

B. 7

C. 9

D. 10

22D3 What does the MID (Maritime Identification Digits) signify?

A. Port of registry

B. Nationality

C. Gross tonnage

D. Passenger vessel

22D4 Which of the following numbers indicates a U.S. flag ship station?

A. 036627934

B. 243537672

C. 338426791

D. 003382315

22D5 Which of the following MMSI numbers indicates a U.S. flag ship station?

A. 430326890

B. 033609991

C. 303236824

D. 257326819

22D6 Which of the following numbers indicates a ship station MMSI?

A. 003372694

B. 030356328

C. 3384672

D. 623944326

Answers: 22D1 - D 22D2 - A 22D3 - B 22D4 - C 22D5 - C 22D6 - D

Section-d: dsc & Alpha-Numeric id: Key Topic #23: mmsi; Group and Coast Station I.D. Numbers:

23D1 A DSC call is received from a station with a MMSI number of 003669991. What type of station made the call?

A. A vessel operating in Sea Area A3.

B. A group ship station

C. A U.S. coast station

D. An Intercoastal vessel

23D2 A valid MMSI number for a DSC call to a specific group of vessels is:

A. 003664523

B. 338462941

C. 003036483

D. 030327931

23D3 A MMSI 030346239 indicates what?

A. Group MMSI

B. Inmarsat-C I.D. number

C. Coast station

D. Ship station

23D4 Which of the following statements concerning MMSI is true?

A. Coast station MMSI numbers have 9 digits starting with 4.

B. All MMSI numbers are 9 digits and contain an MID.

C. Ship station MMSI numbers can be 7 digits or 9 digits depending on the Inmarsat terminal.

D. Group MMSI numbers must begin with 2 zeros.

23D5 Which of the following statements concerning MMSI is false?

A. All Coast Station MMSI must begin with 2 zeros.

B. All Coast Station MMSI must begin with the MID then 2 zeros.

C. A group call must begin with a single zero followed by the MID.

D. The first 3 digits of a ship MMSI comprise the MID.

23D6 Which of the following statements concerning MMSI is true?

A. All ship station MMSI must begin with a single zero and include the MID.

B. All group station MMSI must begin with the MID.

C. None of these answers are correct.

D. All Coast Station MMSI must be 9 digits and begin with the MID and then two zeros.

Answers: 23D1 - C 23D2 - D 23D3 - A 23D4 - B 23D5 - B 23D6 - C

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