I've just read a post about DSC 'polling' which has prompted me to wonder what is the correct procedure for calling an unknown vessel when you suspect a collision is possible.
Have you taken a VHF Short Range Certificate? Coz it is (or it was) covered in the syllabub. However colregs advice against reverting to VHF in this situation, you should just buggeroffoutoftheway if the other vessels is not behaving in accordance with its obligations.
Yes - I have done the VHF course but don't recall a procedure for calling unknown vessels, it's not in the book either. I agree with following Colregs procedure but occasionally it would be useful to contact other vessels specially at night when they are some way off.
Get an AIS receiver installed and then it is no longer an "unknown vessel" and you will have name or MMSI to call, either in the classic fashion or with DSC.
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only if he has AIS transmitter, of course !
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Very true, but in my experience, all the ones that have frightened me enough to want to call them up were definitely in the class that have one.
In fact, last year I did just that when a 33 knot ferry was coming straight at me. Luckily I did have an AIS receiver and did have his name. As soon as I released the VHF transmit button he altered course.
AIS is especially useful for calling in the situation where you are the stand-on vessel, but it looks like big ship is not going to give way. A call to say you will give way, if he holds his course and speed often gets a quick, if slightly startled response along the lines of "I hold my course and speed, you pass under my stern. Thank you"
Saves the slightly nervous feeling that he might give way at the last moment by turning right on top of you.
Agree with Jerry hawkins . Had to do it once mid channel with a ferry heading straight for us while we were tethered to the sea bed by fishing gear.
Also heard two ships (pre AIS) contact each in much the same way to establish each others intentions in the vicinity of the Nab.
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Have you taken a VHF Short Range Certificate? Coz it is (or it was) covered in the syllabub. However colregs advice against reverting to VHF in this situation, you should just buggeroffoutoftheway if the other vessels is not behaving in accordance with its obligations.
[/ QUOTE ]Can we have an amnesty to allow questions about VHF procedure on the forums, without being told to get a licence. It has become a taboo subject and stops any of us learning from contributors experiences in the real world. Just a thought. Nobody tells people asking about navigation that they should have a YM and insinuate they would then know everything... so why with VHF?
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I've just read a post about DSC 'polling' which has prompted me to wonder what is the correct procedure for calling an unknown vessel when you suspect a collision is possible.
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I always work on the principle "That if the S.O.B. is bigger than me I make sure I get out of his way".
You can argue about it later - cos you have not been hit !!!!!!!!!!!!!!!!!!
When I was in the merch I remeber an incident when off the west coast of ireland and an Indian manned Bulk carrier was in the vicinity together with quite a large fleet of fishing boats off his port side, he made a call "Fishing vessel off my port bow this is ....." He got 20 odd very diret replies, in thick brogue, with regard to identifying the particular fishing vessel together with the identity of his farther!
We worked off Israel a few years ago and all you could hear on 16 was
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Was that the rig that received a phone call from Mrcc Falmouth asking if they had really sunk off Tel Aviv?
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Seems the EPIRB had started up due to water ingress and the OIM was a mate of one of the watch officers at MRCC ... Problem solved without 10 Nimrods and numerous Sea Kings let alone the Israeli secret service. Happy Days.