GMDSS MCQs Online Test

Hello There,

Welcome to our GMDSS MCQs Online Test.

This online test is designed for those who are preparing for their GMDSS Operators Certificate Exam.

This test will be for 1 hour with a total of 50 Multiple-choice Questions. You will the test score and your answers at the end of this test.

You can take the test as many times as you want. Make sure you are logged in before you take the test. in that case, the test score will be e-mailed to you.

Share the score with your other sailor brothers and inspire them to take this test.

Before you proceed further enter your name and e-mail address below so that we can e-mail you the test score

Good Luck, Sailor!!!

Welcome to your GMDSS MCQs Online Test

What is the basic concept of GMDSS?
GMDSS is primarily a system based on?
GMDSS is required for which of the following?
The primary purpose of the GMDSS is?
What is the fundamental concept of the GMDSS?
What is the responsibility of vessels under GMDSS?
What equipment is associated with the land or terrestrial systems?
What equipment is associated with the space systems?
What equipment is used in or near the survival craft?
What equipment is programmed to initiate transmission of Distress alerts and calls to individual stations?
What system provides accurate vessel position information to the GMDSS equipment?
What is the primary equipment for receiving MSI?
Which of the following region lies outside Sea Areas A1, A2, and A3?
What sea area is defined as being within range of a shore-based MF station that provides for continuous DSC alerting?
If a vessel is engaged in local trade and at no point in its voyage travels outside of the range of a VHF shore station with continuous DSC alerting then the vessel is operating in what area?
What is defined as an area, excluding Sea Areas A1 and A2, within the coverage of an INMARSAT Geostationary Satellite in which continuous alerting is available?
SITOR equipment is a full, partial, or alternate carriage requirement under GMDSS for vessels operating in which sea area(s)?
What is defined as the area within the radiotelephone coverage area of at least one VHF coast station in which continuous DSC alerting is available as defined by the IMO regulation for GMDSS?
Which of the following region lies outside Sea Areas A1, A2, and A3
What sea area is defined as being within range of a shore-based MF station that provides for continuous DSC alerting?
Your new question!
If a vessel is engaged in local trade and at no point in its voyage travels outside of the range of a VHF shore station with continuous DSC alerting then the vessel is operating in what area?
What is defined as an area, excluding sea areas A1 and A2, within the coverage of an Inmarsat geostationary satellite in which continuous alerting is available?
SITOR equipment is a full, partial, or alternate carriage requirement under GMDSS for vessels operating in which sea area(s)?
What is defined as the area within the radiotelephone coverage area of at least one VHF coast station in which continuous DSC alerting is available as defined by the IMO Regulation for GMDSS?
Which of the following is a functional or carriage requirement for compulsory vessels?
Which communications functions must all vessels be capable of performing under GMDSS as defined by the IMO?
GMDSS-equipped ships will be required to perform which of the following communications functions?
What equipment can be used to receive Maritime Safety Information?
Which of the following is a required GMDSS function?
Which of the following is a required GMDSS function?
Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in Sea Area A1 at all times?
What statement is true regarding the additional equipment carriage requirement imposed for the survival craft of vessels over 500 gross tons?
Vessels operating in which sea area(s) are required to carry either Inmarsat or HF equipment or a combination thereof under GMDSS?
Within a single sea area, what is the primary reason GMDSS imposes carriage requirements for different radio subsystems?
If operating within Ocean Area A1, and outside of NAVTEX coverage, a GMDSS-equipped vessel must carry?
What is the equipment carriage requirement for survival craft under GMDSS?
Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in Sea Area A1 at all times?
What statement is true regarding the additional equipment carriage requirement imposed for the survival craft of vessels over 500 gross tons?
Vessels operating in which sea area(s) are required to carry either Inmarsat or HF equipment or a combination thereof under GMDSS?
Within a single sea area, what is the primary reason GMDSS imposes carriage requirements for different radio subsystems?
If operating within Ocean Area A1, and outside of NAVTEX coverage, a GMDSS-equipped vessel must carry?
What is the equipment carriage requirement for survival craft under GMDSS?
What is the equipment carriage requirement for survival craft under GMDSS?
Your new question!
Which of the following statements concerning maintenance requirements is false?
Which of the following statements concerning maintenance requirements is true?
Which of the following is a requirement, under GMDSS, for all vessels over 300 gross tons operating within range of an MF-DSC equipped shore station?
What statement is generally correct regarding the maintenance requirements for ships under GMDSS?
A ship operating in Sea Area A-3 must have the following provisions for maintenance:
A ship operating in sea area A-1 must have the following provisions for maintenance:
What is the frequency range for Medium Frequency?
What is the frequency range for Ultra High Frequency (UHF)?
What is the frequency range for High Frequency?
What is the frequency range for Very High Frequency?
What is the frequency range for Super High Frequency?
What is the primary frequency range for long-distance skywave communications?
Which of the following systems is most likely to be subject to fading or static interference?
Which system is most likely to be affected by atmospheric disturbances?
Which of the following systems is least likely to be subject to fading or static interference?
Which system is least likely to be affected by atmospheric disturbances?
Which of the following frequency bands would most likely provide reliable communications between two stations that are 100 miles (160 km) apart?
Which system has the least effective radius of operation?
What statement best describes modulation?
What statement best describes demodulation?
Which statement best describes amplitude modulation?
What is the emission designation for MF-HF voice signals?
Which statement best describes frequency modulation?
What is the emission designation for VHF-FM?
Which of the following statements is true?
What is the signal transmitted in J2B mode?
What is the signal transmitted in H3E mode?
How many sidebands are present in the J3E mode?
How many sidebands are present in a standard A.M. signal?
Which of the following statements describes the carrier?
What would be an indication of a malfunction on a GMDSS station with a 24 VDC battery system?
What is the effect of temperature on the specific gravity of lead acid batteries?
What will cause an individual battery cell to reverse polarity.
What instrument is used for measuring the electrolyte of a lead acid battery?
What is the normal specific gravity of a fully charged lead acid battery cell?
What is the normal voltage of a single lead acid battery cell?
An incoming DSC Distress alert on 8414.5 kHz will have what result?
You receive a Routine DSC call to your vessel, without specifying an alternate working voice frequency &emission. Your transceiver frequency display reads: 2177 kHz transmit 2177 kHz receive. What must you do?
You receive a Routine DSC call specifying an alternate working voice frequency & emission. Your transceiver frequency display reads: 4125.0 kHz transmit 4125.0 kHz receive:
You receive an Urgency DSC call to all vessels specifying an alternate TELEX frequency & emission. If your transceiver frequency display reads: 2174.5 kHz transmit & 4207.5 kHz receive:
A DSC Distress call is received by your vessel and your transceiver frequency display reads: Transmit = 4207.5 kHz and Receive = 4207.5 kHz -- what information can you infer from this?
The Distress Alarm sounds and the screen readout no longer contains the particulars of the Distress:
GMDSS is primarily a system based on?
How can a GMDSS operator determine the best frequency band to choose for a SITOR transmission to ashore station?
At mid-day, what would be the best choice in attempting to communicate with a shore station some 75 miles distant?
At mid-night, what would be the best choice in attempting to communicate, using NBDP with a shore station some 800 miles distant?
At mid-day in the summer, what would be the best choice in attempting to communicate, using NBDP with a shore station some 1800 miles distant?
ship at anchor has been communicating marginally with a shore station approximately 200 miles distant on a frequency in the 4 MHz band periodically throughout the day. Toward the late afternoon and evening, what effect should be noticed?
A ship has been communicating effectively on 16 MHz during daylight hours with a shore station at a distance of 3500 miles. Toward late afternoon and evening what effect would be noticed?
The "short rules" of propagation necessary to select the appropriate frequency band are:
GMDSS operators should learn which of the following propagation "rules of thumb"?
What would be the most appropriate HF bands for communicating from San Francisco to Taiwan or the Philippines?
GMDSS operators should routinely focus on the factors affecting propagation in what priority?
Which statement concerning frequency band selection and propagation most corresponds with standard practice.
To ensure effective communications, GMDSS operators should:
Your MF-HF whip antenna breaks off and is carried away in a storm. What would you do to regain operation on MF-HF frequencies?
Your antenna tuner becomes totally inoperative. What would you do to obtain operation on 2 HF bands?
Which would be an indication of proper operation of a SSB transmitter rated at 60 watt PEP output?
Which would indicate proper operation of a SSB transmitter rated at 60 Watt PEP output in J3E mode?
Which would indicate a malfunction in a 2182 kHz radiotelephone system?
Which of the following conditions would be a symptom of malfunction in a 2182 kHz radio telephone system which must be reported to an onboard or at-sea maintainer under GMDSS?
Which statement is true regarding the receipt and acknowledgement of actual Distress follow-on communications by GMDSS ship stations.
What does the acronym “EOS" indicate in the received message?
What is the proper procedure to be followed upon receipt of a Distress alert transmitted by use of Digital Selective Calling (DSC) techniques?
What does the acronym "ECC" indicate in the received message?
What action should be taken on receipt of a Distress alert?
What action should be taken if a Distress alert is received on the 12 MHz DSC frequency?
Your MF-HF whip antenna breaks off and is carried away in a storm. What would you do to regain operation on MF-HF frequencies?
Your antenna tuner becomes totally inoperative. What would you do to obtain operation on 2 HF bands?
Your new question!
Which of the following defines "ITU Channel 1216"?
Which of the following is a valid 22-MHz ITU Channel?
What is meant by the term "ITU channel"?
ITU Channel 1604 would mean:
Which is a valid ITU Designation?
ITU channels are:
Your new question!
Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the POR?
Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in AOR-W?
Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the IOR?
Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the POR?
Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the AOR-E?
From an Inmarsat-C terminal which of the following is a correctly formatted address for sending TELEX messages to a vessel in AOR-W?