1/47
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
Under what circumstances may a ship or aircraft station interfere with a public coast station?
In cases of distress
Ordinarily, how often would a station using a telephony emission identify?
At the beginning and end of each transmission and at 15 minute intervals
When using a SSB station on 2182 KHz or VHF-FM on channel 16:
A - Preliminary call must not exceed 30 seconds
B - if contact is not made, you must wait at least 2 minutes before repeating the call
C - Once contact is established, you must switch to a working frequency
D - All of these
What should a station operator do before making a transmission?
Except for the transmission of distress calls, determine that the frequency is not in use by monitoring the frequency before transmitting
On what frequency should a ship station normally call a coast station when using a radiotelephony emission?
Calls should be initiated on the appropriate ship to shore working frequency of the coast station
In the International Phonetic Alphabet, the letters E,M and S are represented by the words:
Echo, Mike, Sierra
What information must be included in a distress message?
A - Ñame of vessel
B - Location
C - type of distress and specifics of help requested
D - All of the above
What are the highest priority communications from ships at sea?
Distress calls are highest and then communications call preceded by Urgency and then safety signals
What is a distress communication?
An internationally recognized communication indicating that the sender is threatened by grave and imminent danger and requests immediate assistance
What is the order of priority of radiotelephone communications in the maritime services ?
Distress calls and signals, followed by communications preceded by urgency and safety signals and all other communications
The radiotelephone distress call and message consists of:
A - MAYDAY spoken three times followed by the name of the vessel and the call sign in phonetics spoken three times
B - particulars of its position, latitude longitude and other information which might facilitate rescue such as length, color and type of vessel, and number of persons on board
C - nature of distress and kind of assistance required
D - all of the above
What is distress traffic?
All messages relative to the immediate assistance required by a ship, aircraft or other vehicle threatened by grace or imminent danger such as life and safety of persons on board, or land overboard
What is typical urgency transmission?
A request for medical assistance that does not rise to the level of distress, or a critical weather transmission higher than safety
What is the internationally recognized. Urgency Signal?
The words “ PAN PAN ” spoken three times before the urgency call
What is a safety transmission?
A communications transmission, which indicates that a station is preparing to transmit an important navigation, or weather warning
The urgency signal concerning the safety of a ship, aircraft, or person shall be sent only on the authority of :
Either master of ship, or person responsible for mobile station
The urgency signal has lower priority than:
Distress
What safety signal Word is spoken three times, Followed by the station Call letters spoken three times, to announce a storm warning, danger to navigation or special aid to navigation.
SECURITE
What is the fundamental concept of GMDSS?
It is intended to automate and improve emergency communications in the Maritime industry
The primary purpose of the GMDSS is to:
Automate and improve emergency communications for the worlds shipping industry
What is the basic concept of GMDSS?
A - Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delay.
B - Search and rescue authorities ashore can be alerted to a distress situation
C - Shipping in the immediate vicinity of a ship in distress will be rapidly alerted
D - all of these
GMDSS is primarily a system based on?
The linking of search and rescue authorities ashore with shipping in the immediate vicinity of a ship in distress, or in need of assistance
What is the responsibility of vessels under GMDSS?
Every ship is able to perform those communications functions that are essential for the safety of the ship itself and of other ships
GMDSS is required for which of the following?
SOLAS convention ships of 300 gross tonnage or more
What is the purpose of the INT-USA control settings on a VHF?
To change a certain international duplex channel assignments to simplex in the U.S. for VTS and others purposes
VHF ship station transmitters must have the capability of reducing carrier power to:
1 Watt
The dual watch (DW) function is used to:
Listening on any selected channel while periodically monitoring ch-16
Which of the following statements best describes the correct setting for manual adjustment of the squelch control?
Adjust squelch control to the minimum level necessary to barely suppress any background noise
The “scan” function is used to:
Sequentially scan all or selected channels
Why must VHF distress, urgency and safety communications (as well as VTS traffic calls) be performed in the simplex operating mode?
To ensure that vessels not directly participating in the communications can hear both sides of the radio exchange
What channel must VHF-FM equipped vessels monitor at all times when the vessel is at sea?
Channel 16
What is the aircraft frequency and emission used for distress communications?
121.500 MHz - A3E
Which VHF channel is used only for digital selective calling?
Channel 70
Which channel is utilized for the required Bridge to bridge watch?
VHF-FM on Ch-13 in most areas of the continental United States
Which channel would most likely be used for routine ship to ship voice traffic?
Ch-08
What channel would you use to place a Call to a shore telephone?
Ch-28
Which modes could be selected to receive vessel traffic lists from high seas shore stations?
SSB and FEC
Why must all MF-HF distress, urgency, and safety communications Take place solely on the 6 assigned frequencies, and in the simplex operating mode?
A - For non - GMDSS ships, to maximize the chances for other vessels to receive those communications
B - Both A and C
C - For GMDSS or DSC- equipped ships, to maximize the chances for other vessels to receive those communications following the transmission of a DSC call of the correct priority
D - To enable an RCC or coast station to only hear communications from the vessel actually in distress.
To set up the MF/HF transceiver for a voice call to a coast station, the operator must:
Select J3E mode for proper voice operations
MF/HF transceiver power levels should be set:
To the lowest level necessary for effective communications
To set up the MF/HF transceiver for a TELEX call to a coast station, the operator must:
Select F1B mode or J2B mode depending on the equipment manufacturer
What is the purpose of the Receiver Incremental Tuning (RIT) or “clarifier” control?
It acts as a “fine tune” control on the receive frequency
On what frequency would a vessel normally call another ship station when using a radiotelephony emission?
On 2182 KHz or Ch-16, Unless the station knows that the called vessel maintains a simultaneous watch on another intership working frequency
What is the MF radiotelephony calling and distress frequency?
2182 KHz
For general communications purposes, paired frequencies are:
Normally used with public coast stations
What emission must be used when operating on the MF distress and calling voice frequency?
J3E- single side and telephony
Which of the following defines high frequency “ITU channel 1212”?
The 12th channel in the 12 MHz band
for general communications purposes, simplex frequencies are:
A - Normally used between ship stations and private coast stations
B - Normally used with public coast stations
C - Normally used between ship stations
D - Both A and C are correct