Humminbird Side Imaging Forums
General => General Discussion => Topic started by: dpoursanidis on July 11, 2013, 05:04:42 AM
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Good morning my friends,
User of a side imagine and 200khz depth echosounder, i have design a project for the mapping of rocky, sandy and seagrass bottom in a marine area in Greece (Natura 2000 area- South Crete / Chania).
Till now, i have unanswered questions on the following issues.
1) What is the side scan bottom coverage in 5/10/15/50 meters depth? Crucial information to scedule the expedition in the sea. No answer yet from anywhere.
2) Till what depth these units give meaningfull information ? Also crucial for the project (no answer around - companies say that we give you data till 100 meters depth but when i collect data from such depths i collect juts noise).
3) How can i move theside imagine (build a towed fish) unit far from the engine in order to avoid the noise in the data ? What type of cable i have to find and extend it ?
4) "Best" settings / tunes in Dr. Depth for seawater applications? As till now, what i find is solely for freshwater / shallow deoths from US.
5) Bottom hardness values - scale from 0 to 100. means that the greater the value the harder the bottom is or the opposite ?
I know, lots of questions, but i cannot find clear answers at all !!!
Thanks for the time
Dimitris
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Welcome to the Unofficial Humminbird Side Imaging Forums Dimitris.
The area covered and how deep the Si sonar will work to is just like any other sonar and will be affected by the water quality that it is used in. Aside from testing this yourself in the area you will be using it in, perhaps someone else who is using a Humminbird Si unit in that same area can comment on the performance that they have seen.