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Old 07 December 2007, 13:08   #11
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is that big bend in the middle due to a change of course made when scanning it?

The initial reports about this unit werent too impressive but your scans are exactly what a small diving outfit need.
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Old 08 December 2007, 04:40   #12
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Hi,

Yes, it is difficult to maintain a 100% straight line, in this case, is the wreck more than 100m. All the best results are made in really calm weather. Just a little waves makes it hard to get good pictures, but still ok for the initial searching for wrecks. To go with the waves also helps the problem, in case of not to great weather.

I bought mine as a supplement (not an alternative to real side scan sonar) and back up gps, and itīs worth every dollar!


Regards

Henrik
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Old 08 December 2007, 09:31   #13
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Quote:
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The initial reports about this unit werent too impressive but your scans are exactly what a small diving outfit need.
Thats what I thought too, might have to have a chat with Santa

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Old 10 December 2007, 16:18   #14
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Diver,

They look impressive images, that's about our average depth too, might look into these units more. Would only need the sonar if it will take a position from something else and record.
It does have a NEMA hookup athough why would you want to input GPS coordinates to it?? All of the sidescan units have intergrated GPS with a remote antenna. If you want to program in coordinates you already have that's easily accomplished. The images can be recorded on SD memory cards.
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Old 11 December 2007, 07:48   #15
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All of the sidescan units have intergrated GPS with a remote antenna.
Have they stopped making the SI Sonar stand alone unit? i.e. no GPS?
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Old 11 December 2007, 18:49   #16
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Humminbird does not make a stand alone SI unit. There's another company that does make something compable - although I can't remember the name right now...
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Old 12 December 2007, 03:51   #17
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Humminbird does not make a stand alone SI unit. There's another company that does make something compable - although I can't remember the name right now...
Interphase (sp)
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Old 12 December 2007, 12:45   #18
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Yup that's it, although its not really a sidescan unit more of a "forward looking". I haven't heard good things about its utility.
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Old 13 December 2007, 07:21   #19
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Yup that's it, although its not really a sidescan unit more of a "forward looking". I haven't heard good things about its utility.
Was on a boat in Norway a couple of years ago and he had one fitted, worked great and once it was explained what we wre looking at it is pretty good but complicated to operate.
A Multi-beam sonar is the ticket, just a bit on the oh dear side
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Old 29 January 2008, 06:18   #20
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sonar 997

Hi Henrik,
We too are divers and we are about to purchase a 997 unit. We are very impressed with your pictures of the 6th December but could you please explain the following:-
a. What do the numbers in the top right hand corner represent?
b. Can you scan only to right or left or can you scan both at once?
c. Are you able to remove the information down the left hand side of the screen?
We have just changed our engine to a 200 Optimax so I hope we can go slow enough. Have you any other tips or info you could share with us to maximise the use of this unit?
We go out of Plymouth and any information or tips from UK Divers using this equipment would be greatly appreciated.
Many thanks,
Paul.
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