![]() ![]() I've actually tested this, inadvertently - due to equipment failures I've found myself once operating in thick fog with AIS receive and a radar that mostly worked but occasionally cut out for a few minutes, and once in thick fog with good radar but AIS that barely worked all day. In fog, the best setup by far is AIS and radar combined, but if I had to choose one I'd take a modern radar (with effective MARPA) over AIS every time. It comes down to whether you think you'll end up sailing in reduced visibility much. So now we just need to put radar and AIS transmit in order. ![]() Of course, AIS transmitters also include receivers, so a standalone receiver would be a waste of money and effort if you anticipated adding a transmitter soon afterwards. You mention cross-Channel, and being able to monitor CPAs on all the ships coming towards you down the lanes will make a very big difference to how you manage that crossing. They're still a good piece of kit, but I get the impression that the number of vessels out there operating solely on radar without an AIS display is now pretty limited, and so an AIS transmitter that will be visible and useful to a much wider range of vessels has to take priority.ĪIS receive capability has to be at the top of the list, just because - assuming you already have a plotter - it's the cheapest and easiest to fit and the most immediate use to you under normal good-visibility conditions. I'd put the active radar transponder at the bottom of the list. ![]()
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