Just bought a side scan sonar off ebay...anyone know anything about a dowty3500??? I think its made in england.......I have got to lay off the late night ebaying after a few cocktails lol. This one is an ouchie!!!!!!!! Capt, Joe
hey capn joe- i dont know about the side-scan but i do know what you mean about e-bay. my problem is , i dont need the cocktails,lol. does the side scan come with the transducer/s ? if not then i would be inclined to be worried about matchng it up since it is a brit machine. good luck either way-
I was a hydrographic surveyor for a couple years, we used to drag them all over. What are you planning on doing with it? How are you going to process all the data you collect with it? Bad machines, will give you a great picture of the bottom, but you really have to know what you are doing. Good luck, with it hope it's not as much of a pain in the A$$ as the ones I used. Also Chilli from the board still works for my old company and might be able to help you out, or get you in contact with someone who can help. Dang that's a crasy purchase. Good luck.
Hummingbird has made side-scan models for several years now. You can use two transducers, or, just the multi-view one. Lets you look down, left, right, or left and right at the same time. Mine only cost about $400, since it was only in black & white not color.
This is a towfish device that drags 100-200' behind the boat for accurate survey data at depth.The Humminbird has limitations with its processer and ducer since it is mounted at the boat.You run a program to calculate image position vs. vessel position.
The Hummingbird works this way as well,but it only needs to calulate port or starboard up to 150' and thats in shallow water
its a dowty 3500 and it has a tow fish , and a lot of stainless cable and a drum, in addition to a screen that I think uses paper..24 volts .I want to hunt small hangs with it.............but dont want it to be user unfriendly.........Capt, Joe