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Old 02 January 2009, 06:10   #1
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Radar reflector

Are these worthwhile for a rib?

Whats the best for a single A-frame?
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Old 02 January 2009, 06:15   #2
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I recall reading an article ( possibly as a result of the ferry/ yacht suspected collison/ incident south of the IOW) that unless you are really going for a big one the height of a reflector on a RIB seriously impaiers its effectiveness.

This is just a recolection as I cant find the article at the moment.

Found it :

http://www.ybw.com/pbo/pdfs/radar_reflectors.pdf
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Old 02 January 2009, 07:33   #3
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Still better than nothing though!

Echomax do one specifically for RIBs.
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Old 02 January 2009, 08:47   #4
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Still better than nothing though!

Echomax do one specifically for RIBs.
Absolutley !
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Old 02 January 2009, 11:37   #5
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There was a good MAIB report done by Qinetic (I think) after the Ouzo tragedy, on the different reflectors and their efficiency. None of the usual off the shelf marine reflectors actually met the standard in all tests. However, the Trilens came out pretty close and was my preferred choice from size weight, cost, appearance and quality. An active (powered) model such as the Sea-Me wass good but costs a lot.
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Old 02 January 2009, 11:42   #6
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Sea Me is definitely the best but doesn't work on all frequencies and isn't cheap.

The Echomax is pretty good but looks like a big dustbin on the top of your boat.

The Trilens is very good and what's more to the point it will look really cool on an A frame. Get the Standard - the small is too small and the big one is silly.

The best of all is prob the cyclops which is British but they can't be bothered with the pleasure market any more - too busy doing sneaky military stuff. it looked cool as well - like a UFO!!!
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Old 02 January 2009, 11:49   #7
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The only problem with the likes of the Sea me is if you lose power or the unit loses power you have no reflector.

We did have something similar on the Atlantics but now have the Echomax fitted.
When we did have the powered radar reflector it affectionately got known as the "Radar Dildo" for certain reasons...
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Old 03 January 2009, 11:16   #8
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Rather than fit Seame you can now get an active AIS transponder which might be more useful.



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Old 03 January 2009, 13:46   #9
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... more to the point it will look really cool on an A frame...
surely that is one of the least important criteria for radar reflector selection not one of the most.

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Rather than fit Seame you can now get an active AIS transponder which might be more useful.
Pete, I was told that most large ships don't have their AIS data displayed on a chart plotter or any sort of graphical display - rather just a table of positions etc... which makes it difficult to use for routine collision avoidance... not sure if that is still the case now.
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Old 03 January 2009, 15:12   #10
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I work on a lot of large ships, tankers, coasters, that sort of thing and AIS is a major safety feature for them. Generally most of them have at minimum one of their radars connected to AIS and a crew member assigned to monitor the radar when on passge. They also have it generally tied into their plotters and do take notice of alarms and proximities associated with AIS returns.

Under SOLAS regs it is mandatory for AIS to be carried on ships of 300 GRT upward (see attached).
Attached Files
File Type: pdf SOLAS.V.19.2.1-5.pdf (75.5 KB, 198 views)
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