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Old 09 March 2013, 16:39   #1
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Thank f***k for iphones

Took Pigs Ear out for a shakedown after stage 2 of the refurb. Teignmouth to Salcombe. Had a great lunch at the Ferry looking out over a sunny view of the Salcombe Estuary then as we headed back to Teignmouth hit thick fog... The Lowrance GPS antenna gave up and we were navigating with a Garmin Etrex and iPhone. It certainly makes you realise how dependant you are on Electronics in a rib. Even if we had paper charts a compass Is not much use without reference points. !!

iPad mini in a marine case with Navionics App is the plan going forwards.
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Old 09 March 2013, 19:13   #2
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It certainly makes you realise how dependant you are on Electronics in a rib. Even if we had paper charts a compass Is not much use without reference points. !!
People managed with compass and paper for a very long time before electonic navigation came along. It takes a leap of faith to rely on a log and compass but it should still get you home - although you might want to substantially reduce speed to do so.
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Old 09 March 2013, 19:13   #3
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Even if we had paper charts a compass Is not much use without reference points. !!
.
Its a wonder then how we navigated before electronics - lucky I quess


Damn - Poly beat me to it
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Old 09 March 2013, 20:21   #4
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Chris:

Out of curiosity, which Lowrance antenna do you have?

jky

Edit; Never mind, just saw your post in electronics.
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Old 09 March 2013, 21:35   #5
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Its a wonder then how we navigated before electronics - lucky I quess


Damn - Poly beat me to it
Still scary out there without reference points. I remember coming back fron IOM in dense fog, lost the others and only found my way by finding their wake.
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Old 10 March 2013, 01:52   #6
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The downside with new electronics/ plotters is that i believe some boaters use it as it would be a radar, they proceed in fog at speeds they would never had done with paper charts.....

I always carry old fashion paper charts in the boat but must admit it is so much more convenient to use the plotter.
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Old 10 March 2013, 03:35   #7
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People managed with compass and paper for a very long time before electonic navigation came along. It takes a leap of faith to rely on a log and compass but it should still get you home - although you might want to substantially reduce speed to do so.
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Its a wonder then how we navigated before electronics -
Keeping a rib on a constant compass bearing is not easy as we saw when we used the iphone and a handheld Garmin Etrex to keep an eye on the course. We were keeping our speed at a constant 15 knots but if we had relied upon just a compass and distance over time calcs then we would have been stuffed.

I think an ipad in a waterproof case as a back up is the bext solution. !
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Old 10 March 2013, 05:21   #8
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Fog is scary.
A permanently mounted compass and my old handheld Garmin 72 in the emergency kit is my backup in case the plotter fails in fog or not.

15kts in fog? I'd be going slow and keeping a good listening watch even if I had radar

Glad you got back OK.
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Old 10 March 2013, 05:26   #9
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Keeping a rib on a constant compass bearing is not easy as we saw when we used the iphone and a handheld Garmin Etrex to keep an eye on the course. We were keeping our speed at a constant 15 knots but if we had relied upon just a compass and distance over time calcs then we would have been stuffed.
Do you not have a proper compass on your console? Using GPS to determine heading is rubbish because it shows you is the average heading that you were on a moment ago - not where you are heading now. Steering a compass course is a skill (whether on a rib or any other boat) - it was covered in my PB2. There might be a "magnetic" compass in your phone too - but it will be heavily damped so I doubt its accurate / precise enough to navigate properly by.

How bad was the Vis? 15 knots still sounds quite fast if you can't see anything. How quick can you stop / avoid an obstacle?
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Old 10 March 2013, 05:35   #10
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People managed with compass and paper for a very long time before electonic navigation came along.
People like Sir Cloudesley Shovell for instance: Cloudesley Shovell - Wikipedia, the free encyclopedia
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