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Old 16 October 2013, 04:48   #411
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I should clarify ... when I say
"the good intentions to log time/distance/fuel en route never materialized"
I meant my intentions, I certainly don't mean to cast aspersions on anyone else.
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Old 16 October 2013, 05:46   #412
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I've been reading through these post while consuming large volumes of tea, a few things that I want to throw into the po if you guys are going to do more, compasses, it's ok to follow a compass heading if you're old school and I'm not opening a debate here, you need to have a compass swung every year if you're going to use it to navigate and swinging one on a rib is next to impossible, I'll explain, compass senses magnetic field so if you get anything metal near it you will put it out, push your control lever forward will put your compass out, if they're both on the console, so will cable steering when turning the wheel, something you can't adjust against, secondly if you're using a compass you will need paper charts and a plotted course.
If you're a few miles out when you get to land there is no way of knowing where you are without a chart of some sort and going back to old school, you can tell a lot from a chart, from depth, land marks, sea bed composite.
A plotter, you'll miss it if it doesn't work but have a back up planer plotter and don't rely on it entirely.
Now two questions, who had charts and who had an accurate compass, no fibbing now
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Old 16 October 2013, 05:46   #413
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Sorry that was in relation to Hadds footage.
I'm having problems at the moment transferring footage on to iMovie sorry may take some time to sort out.
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Old 16 October 2013, 06:02   #414
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I've been reading through these post while consuming large volumes of tea, a few things that I want to throw into the po if you guys are going to do more, compasses, it's ok to follow a compass heading if you're old school and I'm not opening a debate here, you need to have a compass swung every year if you're going to use it to navigate and swinging one on a rib is next to impossible, I'll explain, compass senses magnetic field so if you get anything metal near it you will put it out, push your control lever forward will put your compass out, if they're both on the console, so will cable steering when turning the wheel, something you can't adjust against, secondly if you're using a compass you will need paper charts and a plotted course.
If you're a few miles out when you get to land there is no way of knowing where you are without a chart of some sort and going back to old school, you can tell a lot from a chart, from depth, land marks, sea bed composite.
A plotter, you'll miss it if it doesn't work but have a back up planer plotter and don't rely on it entirely.
Now two questions, who had charts and who had an accurate compass, no fibbing now
+1, IMHO the best I could get from a compass on a RIB in those conditions , is that I'm heading generally in the right direction.
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Old 16 October 2013, 06:22   #415
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I'm having problems at the moment transferring footage on to iMovie sorry may take some time to sort out.
Here we go excuses excuses sounds like the american moon landing debate to me did they didnt they
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Old 16 October 2013, 06:28   #416
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+1, IMHO the best I could get from a compass on a RIB in those conditions , is that I'm heading generally in the right direction.
You and me both, I'd sooner be looking at a rolling road, a few degrees out over 60 odd miles, eek
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Old 16 October 2013, 06:29   #417
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+1, IMHO the best I could get from a compass on a RIB in those conditions , is that I'm heading generally in the right direction.
+1 id sooner trust my plotter, also the passenger sitting in front of it can always tell you if your off course id say most skippers have another experienced helm next to them when there out
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Old 16 October 2013, 07:03   #418
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You certainly can't steer by compass in the conventional fashion on a rib (or for that matter any high speed small planing vessel). However, if you're in Cherbourg and you head northish most of the way, unless there is a huge amount of lee you'll end up hitting blighty at some point . I agree it would be a time to use the rolling road on the plotter though.
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Old 16 October 2013, 07:11   #419
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Interesting & very valid points made by Biff re compass errors - add in turning and errors caused by accelaration etc and they are hard to follow an exact course - but they'll give you a fair idea of heading.

I guess with this trip specifically with numerous boats there was lots of back up by way of a plotter failing . I found the compass rose on the plotter handy to follow in duff weather - and if you a track set up - you line up the indicators/ bugs and follow them only having to thank about turn left or turn right a bit - instead of thinking about actual numbers.

Of course even with the best paper charts ( or waterproof ones etc ) actually pulling them out and using them would it probably be more yachmaster level than advanced powerboat etc - no one would be daft enough to head out in a RIB across the channel in weather like that ! ..would they?
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Old 16 October 2013, 07:19   #420
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I predominantly used the plotter on the return journey where somehow I found myself out ahead for a considerable time, but I did cross check this with the compass mounted above the console on the frame. It was near impossible to follow the compass as each wave could easily put you 20 to 40 degrees off course. It's very easy to get disorientated especially when you stop and then start again.
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