Collision Avoidance Tip - Call his boss!

Published: May 28th, 2009 by John | Comments |


navy ship collision course

It’s the classic scenario from the Academy… You are the stand on vessel with no room to maneuver and a zero CPA contact is bearing down on you. You try the radio but no answer… what do you do next?

This post doesn’t answer the question but gives you other options not available when you were at the academy.

Use your AIS & VHF DSC:

  1. Head to the AIS and get the contact’s MMSI number & name
  2. Enter the number into your VHF DSC controller
  3. Select a working frequency.
  4. Hit send then start hailing on the working channel

What happens next is the GMDSS alarm will go off and his VHF will change to a working frequency. If he was away from the bridge he’ll have to return to silence the alarm at which point he hears your hail.

What if the alarm doesn’t wake him or he has it disabled?

CALL HIS BOSS

  1. Get his name from the AIS.
  2. Look him up in your ITU pub.
  3. Find his INMARSAT-B number and call him.

Why does this work? As it was explained to me “Most captains have an INMARSAT-B extension in their office, most captains spend most of their time in their office. Most of the time the captain will answer the phone and rectify the problem post-haste.” …smile

*This post comes from our extensive gCaptain Archives. To find more interesting articles from the past use the search bar or click on one of the “Tags” found in our sidebar —>

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Categories: Communication · Maritime Expert · Radio · Uncategorized · tips

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  • PS - The use of the vhf for collision avoidance is always controversial because of the foll. issues -

    a) Loss of time (conveying your info to the other vessel and discussion) wen someone should be taking action

    b) Communication issues (all navigators do not have English as a mother tongue, different accents .... a London cockney may not understand an American... ditto vice versa)

    c) Loss of situational awareness because of (1) ... can you monitor the ARPA when o the vhf?

    d) a possibility that someone may do things different from the ROR

    I agree ... for RAM Drill ships this may be an option, but not for regular merchant vessels .. .imagine being in Taiwan straits with collision situations continuously developing every few minutes - daily scenario.
  • ="http://www.xrum.977mb.com">new year foto
  • CaptStash
    Perhaps I jumped to a conclusion. But also, I have to say that by the time you fooled around and made the phone call you would likely be in extremis. Often, other ships don't respond if they are a ways away yet. I dont't know why, they just don't.

    I try to teaach my mates common sense. Mid ocean, it's often safer and easier to make a small course correction when it becomes clear that the other ship is not doing what is supposed to.

    And most importantly -- Never, ever turn left! (Leave that one to the captain, and let me tell you, I sure haven't done it very many times).
  • OneEighteen
    Why do you think this advice was for mates?
  • CaptStash
    If you have done all of the above, you are probably already in big trouble.

    I often ask this or similar questions when training new mates. The right answer is: Call the Captain! The mate on watch shouldn't be waiting until it's too late before he calls the captain. This is why we get paid the big bucks anyway. If you have called the opther ship after getting his name off the AIS and not had any luck, the CPA is small, and the time of CPS is under 20 minutes, it's time to get the boss up there post haste.
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