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Subelement B
Communications Procedures
Section 7
Bridge-to-Bridge Operations
What traffic management service is operated by the U.S. Coast Guard in certain designated water areas to prevent ship collisions, groundings and environmental harm?
  • Water Safety Management Bureau (WSMB).
  • Correct Answer
    Vessel Traffic Service (VTS).
  • Ship Movement and Safety Agency (SMSA).
  • Interdepartmental Harbor and Port Patrol (IHPP).

Answer is in the words of the question. See Vessel Traffic Service and think: "Traffic Cop of the Waterways" with the gloves & whistle too.

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What is a bridge-to-bridge station?
  • An internal communications system linking the wheel house with the ship’s primary radio operating position and other integral ship control points.
  • An inland waterways and coastal radio station serving ship stations operating within the United States.
  • A portable ship station necessary to eliminate frequent application to operate a ship station on board different vessels.
  • Correct Answer
    A VHF radio station located on a ship’s navigational bridge or main control station that is used only for navigational communications.

Bridge = navigational bridge or control station.

Bridge to bridge implies two bridges communicating with each other.

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When may a bridge-to-bridge transmission be more than 1 watt?
  • Correct Answer
    When broadcasting a distress message and rounding a bend in a river or traveling in a blind spot.
  • When broadcasting a distress message.
  • When rounding a bend in a river or traveling in a blind spot.
  • When calling the Coast Guard.

Because Safety When does the FCC let you break a rule: If it will prevent unsafe condition that could result in the loss of life and/or damage to property.

  1. I'M DYING! Turn Radio Power UP till you are heard.
  2. I can't see you, so "HERE I COME AROUND THE BEND, CAN YOU HEAR ME?!? ANYONE AHEAD OF ME? WATCH OUT I'M COMING"

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When is it legal to transmit high power on Channel 13?
  • Failure of vessel being called to respond.
  • In a blind situation such as rounding a bend in a river.
  • During an emergency.
  • Correct Answer
    All of these.

FCC is concerned with safety. Safe navigation, Safe Rescue, Safe Comms.

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A ship station using VHF bridge-to-bridge Channel 13:
  • Correct Answer
    May be identified by the name of the ship in lieu of call sign.
  • May be identified by call sign and country of origin.
  • Must be identified by call sign and name of vessel.
  • Does not need to identify itself within 100 miles from shore.

The traditional parlance when identifying is the Vessel Name; and has been for thousands of years. Radios have callsigns. Ship with a radio has both a Vessel Name and a Callsign.

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The primary purpose of bridge-to-bridge communications is:
  • Search and rescue emergency calls only.
  • All short-range transmission aboard ship.
  • Correct Answer
    Navigational communications.
  • Transmission of Captain's orders from the bridge.

Bridge-to-bridge communications occur between the navigational bridges of two vessels. Thus, these communications are almost always related to navigation or safety.

All the other options imply intraship communications and would therefore not constitute bridge-to-bridge communications.

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