ULTIMATE ANGLING - the Ultimate SA Fishing website
OFFSHORE ANGLING => Boat Tech => Topic started by: Fishton on November 26, 2010, 01:16:16 PM
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This is a great example of what technology does for a person. Great post.
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Now structure scan is making sense, I was sure that it can do this but until now have not seen proof. I have however seen similar showings in even deeper water on a Furuno Sonar.
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:hehe: :hehe:
I new it the moment Ken posted it I thought you were jumping in your chair.
Sidescan is a great feature I loved it when humminbird got out with it.
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SideScan range setting should be determined by the depth / water column that you are currently in, with a maximum of 100ft (even if you are in 600ft). So if you are in lets say 40ft, your SS max range should be set to the same - 40ft. I see Ken was using a SS range of 50 while his DownScan was on 150ft. (clap)
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SideScan range setting should be determined by the depth / water column that you are currently in, with a maximum of 100ft (even if you are in 600ft). So if you are in lets say 40ft, your SS max range should be set to the same - 40ft. I see Ken was using a SS range of 50 while his DownScan was on 150ft. (clap)
Could you explain because it does nor make sense to me.
If I am at 40ft range at 40ft ???? Then I will just be watching the water column!!!! Sorry can not understand what you are trying to say, please explain.
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Because the echo / return from a fish, especially a tuna is no where near as powerful as that of the sandy / rocky / coral bottom. And if you are in water deeper than 30ft it is highly unlikely that you would see the sonic shadow.
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Did this not make sense either Fedu?
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A bit, but as long as you compensate with the gain wouldn't it be the same ?
On the pic I posted previously that would mean "only" seeing this.....
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Instead of this.
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Could you explain because it does nor make sense to me.
If I am at 40ft range at 40ft ???? Then I will just be watching the water column!!!! Sorry can not understand what you are trying to say, please explain.
Fishton mean that if the water is 40 meter deep you should set you side scan to 40 meters to the side of the boat. the same as the water depth
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Fishton mean that if the water is 40 meter deep you should set you side scan to 40 meters to the side of the boat. the same as the water depth
Again instead of seeing the 1st picture I would only see the 2nd....
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100% Fedu,
If you were looking for wrecks in shallow water, or if you were using a towfish in deeper water, then the range setting above will be perfect.
But if you were looking for tuna for example then no, water column only.
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Fishton mean that if the water is 40 meter deep you should set you side scan to 40 meters to the side of the boat. the same as the water depth
Yes, that's right jaenswart.
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BUT
In the sounder showing on the left, he has the range at 150 feet. On the right (structure scan) the range is at 50 feet. On the left he clearly has the noise rejection set way too high. Which is why he is getting a poor showing on the left. Should he have had his sounder set up right, he would have seen the bait and the fish. And it too would have "found the big tuna".
Clearly a bias comparison.
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Fish and structure showing at the humminbird sidescan with range greater than depth....
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first pic a single fish and second a whole lot, range > depth
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BUT - ?
In the sounder showing on the left, he has the range at 150 feet. 100%
On the right (structure scan) the range is at 50 feet. 100%
On the left he clearly has the noise rejection set way too high. Or gain too low.
Which is why he is getting a poor showing on the left. 100%
Should he have had his sounder set up right, he would have seen the bait and the fish. And it too would have "found the big tuna". Not if the school was not DIRECTLY beneath the boat, which this school is clearly not.
Clearly a bias comparison. - ?
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Fish and structure showing at the humminbird sidescan with range greater than depth....
If tuna could be found at a depth of 5.4m, and if they had large swim bladders (as these fish clearly do) - then yes, a SideScan range of far more than your current depth would be a great setting.
(http://www.ultimateangling.co.za/index.php?action=dlattach;topic=2998.0;attach=16627;image)
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Fish and structure showing at the humminbird sidescan with range greater than depth....
This is a great example of SideScan range setting as you get into deeper water ...
(http://www.ultimateangling.co.za/index.php?action=dlattach;topic=2998.0;attach=16629;image)
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first pic a single fish and second a whole lot, range > depth
Tuna @ 3m?
(http://www.ultimateangling.co.za/index.php?action=dlattach;topic=2998.0;attach=16630;image)
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first pic a single fish and second a whole lot, range > depth
Notice how these fish fade into the bottom echo, and this is only at a depth of just more than 30ft. Imagine what it will become like out at sea in 100+ft and a slight chop on the water!
(http://www.ultimateangling.co.za/index.php?action=dlattach;topic=2998.0;attach=16633;image)
SideScan Golden Rule:-
Shallow Calm Waters - Maximum Range
Deep Offshore Conditions - Less is More (max = Current depth)
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Question:
If out in the deep and trolling where you mostly trying to raise fish from the upper 3rd of the water column, do I correctly understand that you would then set the side scan to say 1/3 of the depth for better results.
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OK, now I think I understood, thanks Fishton.
Let me first state why I was so sceptic about the range issue (sorry no pics):
I troll saltwater for big Cubera Snappers (they can go from 3Kg to 30K in size) water from 3 to 10m deep, I allways have the sidescan range greater than depth and on numerous times I located the Cuberas away from the structure this way, so for me it was very strange Fishton statement.
Now I think I understood what he is trying to say (please correct me if I am wrong), on saltwater and bigger depths let's say +25 meters deep, and if you are trying to locate fish and not structure (sometimes you want to locate structure because you know the chances of geting fish there are very high) you should set your sidescan range at less than the area depth to try find those weaker fish signals that in shallower water can be seen but not on bigger depths.
Is this it ?
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Question: If out in the deep and trolling where you mostly trying to raise fish from the upper 3rd of the water column, do I correctly understand that you would then set the side scan to say 1/3 of the depth for better results.
NO
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OK, now I think I understood, thanks Fishton.
Let me first state why I was so sceptic about the range issue (sorry no pics):
I troll saltwater for big Cubera Snappers (they can go from 3Kg to 30K in size) water from 3 to 10m deep, I allways have the sidescan range greater than depth and on numerous times I located the Cuberas away from the structure this way, so for me it was very strange Fishton statement. 100%
Now I think I understood what he is trying to say (please correct me if I am wrong), on saltwater and bigger depths let's say +25 meters deep, and if you are trying to locate fish and not structure (sometimes you want to locate structure because you know the chances of geting fish there are very high) you should set your sidescan range at less than the area depth to try find those weaker fish signals that in shallower water can be seen but not on bigger depths. Perfect!
Is this it ?
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Answer -
a = 3
b = 2
c = 1
d = 4 & 6
e = 5
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Very good info Fishton.
Credit going your way.
Like you had -1 now you have 0 :-)
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Finally I understand. :tkx:
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Finally I understand. :tkx:
Good, so when you installing it?
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Good, so when you installing it? I'm running a special right now!
:hehe: This is a nice to have, but I do not think it would make a huge difference to the fishing here in Durban and it is a big investment which personally I do not think will warrent the cost, for that kind of money there are other things I would get 1st, but it all takes time.
I also think that the technology is new and will improve substantially.
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HA HA Fernando now try chasing down a school of yellowfin thats 100m to your port or starboard , thats fun mate . you will see how effective this system works once you get down here for the yellows if they ever arrive .
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...a nice Furuno on my boat to read deeper.
Cheeky bastid! Fork out the cash and get a 1kW ducer. Makes no diffs what unit you have.
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Cheeky bastid! Fork out the cash and get a 1kW ducer. Makes no diffs what unit you have. C'mon, special price for you!
Yip, I will need that 1Kw soon bud along with a chart.
I am struggling with the transducer I have now, on my old unit it worked much better but with the HDS it is difficult.
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As you were, please continue...
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Eish... maar die nuwe offshore mod is skerp!!!!!!!!!!!
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I'm tired....give me a break tonight :tkx:
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Eish... maar die nuwe offshore mod is skerp!!!!!!!!!!!
And Grumpy, even more than you! :shk
:hehe: :hehe: