Adding radar - on pole or arch?

SaltyC said:
Hmmmm, confused! I understand fishing boats - they do NOT want to be found on AIS. You previously stated you use Plotter and electronic navigation, not traditional nav - Why do you need to do 'the old way' and find a lighthouse? You aren't looking for the 'confirmation of position' because GPS may not be correct?
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I explained at the time, there was a 10 degree compass variation in the area so I overlaid radar on the plotter. Traditional navigation with a compass and chart would have had us on the rocks very quickly at 10+ knots in the strong currents. We couldn’t see the land, lighthouses or any other feature and turning back wouldn’t work in those currents so I was glad to have such a capable system.
 
lustyd said:
I explained at the time, there was a 10 degree compass variation in the area so I overlaid radar on the plotter. Traditional navigation with a compass and chart would have had us on the rocks very quickly at 10+ knots in the strong currents. We couldn’t see the land, lighthouses or any other feature and turning back wouldn’t work in those currents so I was glad to have such a capable system.
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???? But your gospel GPS is irrefutable? So Radar is superfluous.
 
johnalison said:
Probably very good, but for me it would have been a bit of overkill. Almost all my fog adventures have occurred while motoring in calm conditions, so any loss through heeling would not have mattered much.
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True, and overkill perhaps, but it was of most use 4hrs into a Channel crossing heeling under sail when forecast fog patches become in reality much denser fog. I was short handed, just me and a very seasick chum, so having counted half a dozen black blobs marching steadily down on our port bow I dumped all valour and turned back.
 
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