2 questions in 1 post

[Talon]

I agree, Russian roulette!

<hr width=100% size=1>Alex

<A target="_blank" HREF=http://www.mad-als.com>http://www.mad-als.com</A>

 

[whisper]

Perhaps the aeration is not being done properly then/forums/images/icons/wink.gif
Where is your transducer fitted - in front of or aft of the engine?
Thanks anyway, think we'll have another look at our situation before boat re-launched.

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[BarryH]

But any sounder will only show you whats under it. At any speed your never going to see what your going towards unless you have one of the forward looking sounders.
As with all navaids, they are only that aids to navigation.

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[Talon]

BarryH

Excellent point!

I think reading the charts and opening it up in dead certain waters is the answer then.



<hr width=100% size=1>Alex

<A target="_blank" HREF=http://www.mad-als.com>http://www.mad-als.com</A>

 

[whisper]

Agreed re speeding in uncharted waters - any fool knows that, even me./forums/images/icons/crazy.gif But as an aid to navigation it is also very helpful to know what depth is beneath you when following contours a la PROPER navigation/pilotage. Thus I think it is important to get the FF working at all speeds if at all possible.

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[Talon]

Wow, I learnt that on my course last year, I did not know people actually did use contours though. I thought they always opted for GPS or land marks or something simple to follow.

I tried to stay on a contour on my pratical and found it a right pain in the butt, maybe I just need practice.... /forums/images/icons/frown.gif



<hr width=100% size=1>Alex

<A target="_blank" HREF=http://www.mad-als.com>http://www.mad-als.com</A>

 

[BrendanS]

It was practically the first technique I was shown, and very useful, unless you are totally reliant on gps/plotter, which you shouldn't be. One of the reasons that having a depth sounder only reading at low speed is a pain.

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate

 

[whisper]

Were you perchance going too fast /forums/images/icons/blush.gif
Actually you're right, you need a pretty regular bottom to be able to do it relatively easily.

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[BrendanS]

Works perfectly around the Solent area

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate

 

[BrendanS]

I quite happily follow 10ft or 10m contours at 30+knts when I'm in familiar waters

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate

 

[whisper]

Don't think I'd want to follow a 10ft contour at 30knts around S.Devon & Cornwall. It's probably ok on that inland sea that some people call The Solent. Do you have any rocks there or is it only gently shelving sand and mud?/forums/images/icons/smile.gif
John.
PS Don't be secretive , so where is your transducer fixed then ?

<hr width=100% size=1><P ID="edit"><FONT SIZE=-1>Edited by whisper on 03/01/2004 23:37 (server time).</FONT></P>

 

[Dave_Snelson]

Thanks Alex.

<hr width=100% size=1>Madoc Yacht Club
<A target="_blank" HREF=http://www.madocyachtclub.co.uk>http://www.madocyachtclub.co.uk</A>

 

[BrendanS]

Rocks, old sets of pilings leading out to sea, anti submarine barriers. It's a matter of using local knowledge and charts, and using contours you know are safe, and knowing when it's safe to use them.

Even in rocky areas, as a way home in fog say (as an example, not saying you'd necessarily want to), if you look at the chart, you can usually find a contour that gives safe passage.

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate

 

[whisper]

Yes I agree but not in fog at 30 knts. You might get a bollocking from forumites [shock]
Cheers.

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[BrendanS]

I just knew someone would start an arguement about the fog. Who mentioned anything about 30knts! I said as a way of getting home. Certainly wouldn't be doing 30knts. I'd be doing 40knts so I spent less time at sea with subsequently less chance of a collision!

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate

 

[hlb]

Look. I have two deapth finders. The old original fitted depth sounder and fish finder. Most times they both work. But some times. One or the other. Nothing perfect. On last boat I used to get positive reading of one metre all the way across Irish sea to Ireland. So fit two and take your chances.!!! But still say, what the F*** are you doing 15 knots if not know..../forums/images/icons/laugh.gif Only kidding!!

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn

 

[whisper]

Touchy!! Re. 30 knts - you did at 2319 /forums/images/icons/smile.gif . I mistakenly associated what you said then, with your subsequent comments.
I've not been trying to start an argument, not intentionally anyway as
I agree with nearly all of what you've said re following contours and I often do it on yachts. Personally though I wouldn't have the confidence to blat about at high speed with only 10ft of water below the transducer. This is partially cowardice on my part along with the fact that I don't think I know any inshore stretch of local coast well enough to be 100% sure of it at depths of less than say 3m. My doubts are also increased by there usually being some sort of a sea running.
Regards,
John
P.S. All I have really wanted is the answer to where did you find was the best position for your transducer. I can then try that with ours to see if it is any better.


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[hlb]

P.S. All I have really wanted is the answer to where did you find was the best position for your transducer. I can then try that with ours to see if it is any bet


Try the middle. A bit to one side.

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn

 

[whisper]

I can't go on! I've lost the will to live, but thanks anyway.

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[hlb]

You should ring the samaritans.

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn