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Old 26 October 2009, 06:31   #21
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I'd just use an Echomax radar reflector, if you lose power a See-me one won't work. There's a reason the RNLI changed to Echomax reflectors.
Yes but a leisure RIB is unlikely to choose to go out in the conditions in which an RNLI RIB is required to go out. The chances of losing all electrical power are, I would think, almost negligible in ordinary conditions.

Further, I'm sceptical whether any practical size of passive reflector will actually give a good return mounted on a RIB at (what) 1-1.5m above sea level, at best. The Qinetiq report on radar reflectors was not reassuring in that regard and the Echomax tested has some poor results at larger elevations.

I wonder how well even the Sea-Me (the best performer by a long way) would work at typical RIB height.
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Old 26 October 2009, 06:34   #22
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Yes but a leisure RIB is unlikely to choose to go out in the conditions in which an RNLI RIB is required to go out. The chances of losing all electrical power are, I would think, almost negligible in ordinary conditions.

Further, I'm sceptical whether any practical size of passive reflector will actually give a good return mounted on a RIB at (what) 1-1.5m above sea level, at best. The Qinetiq report on radar reflectors was not reassuring in that regard and the Echomax tested has some poor results at larger elevations.

I wonder how well even the Sea-Me (the best performer by a long way) would work at typical RIB height.
Recent PBO (or similar) article/trial suggested pretty well actually... although essentially its line of sight so if the waves mean you can't actually see the ship don't expect miracles!
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Old 26 October 2009, 06:46   #23
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Well I think I've decided - will get an AIS Engine 2 - for 100 is seems a good add on for the existing system

From the trials I've read the Echomax Active X appears to be just better the See.Me - 420 at Marine Superstore

Whilst I have no intention of going out in bad weather, fog or indeed breaking down - as we play in the Solent and I have my 14 year old son aboard I'd rather spend my hard earnt money on doing all I can to be prepared than not - at least this way I call call up passing traffic and know I've done all I can to make my footprint as big as possible - I know it's not perfect and perhaps too OTT for most - anyway when I get my "Super Yacht" - I can always transfer it

Thanks all really do appreciate all the help given

J
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Old 27 October 2009, 12:57   #24
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which Ais do you intend to get, is it waterproof and will it interface with your plotter? Just interested as it could be good for me too if you have found sommat suitable for a rib at a reasonable price.
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Old 27 October 2009, 13:32   #25
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Hi Dave

It is an AIS Engine 2

http://www.marine-super-store.com/po...artno=99119713

We did get a bit of discount so only 100 - we will fit it inside the console as it should'nt get wet and it does interface (with some wiring magic) to the GPSMAP 550s

Will let you know how the fitting goes

J
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Old 27 October 2009, 14:10   #26
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Yes but a leisure RIB is unlikely to choose to go out in the conditions in which an RNLI RIB is required to go out. The chances of losing all electrical power are, I would think, almost negligible in ordinary conditions.
I don't think the RNLI stopped using them because the Atlantics lost power at night, more to do with how do you know when it is and isn't working. I know it comes with a unit to show when its been interrogated but I'd rather have a unit that works less well all the time than a unit that may fail when I need it most.
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Old 27 October 2009, 14:16   #27
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I had enquired with my supplier about which ais engines he did and that was one of the two. His opinion was not waterproof as we know but also "not suitable for an open boat even in a consol although some folk have fabricated their own waterproof box but be aware of any heat issues" Be interesting to see how it goes.
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Old 27 October 2009, 14:20   #28
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....I know it comes with a unit to show when its been interrogated but I'd rather have a unit that works less well all the time than a unit that may fail when I need it most.
Hehe, reminds me of the old fuddydudy arguments when cameras changed from manual to auto exposure - wot'll happen if the battery runs out... now look where we are!
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Old 27 October 2009, 14:23   #29
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now look where we are
with flat batteries usually ?????
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Old 27 October 2009, 14:29   #30
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I had enquired with my supplier about which ais engines he did and that was one of the two. His opinion was not waterproof as we know but also "not suitable for an open boat even in a consol although some folk have fabricated their own waterproof box but be aware of any heat issues" Be interesting to see how it goes.
I have the earlier version. It's in a cabin but it works very well interfaced with my Garmin plotter so if you keep it dry I suspect it'll be fine. Mine unit doesn't have an on/off switch, it's connected to the ignition so comes on with boat power.
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