NPRedfisher18 Posted August 25, 2017 Report Share Posted August 25, 2017 Curious as to where the best Thru-Hull transducer placement is on this hull. I know that it's important to keep it ahead of the step for clean water. But, based on some of the photos I've seen, that would appear to be a severe PITA. The few photos of thru-hulls i have seen look like they are placed on the extreme forward portion of the hull. With that placement, it would seem they'd spend most of their time out of the water while on plane. Ideally, I'd like a clean, clear picture at all times while running or not. So, trying to get ideas. Not sure if it makes a difference or not, but FWIW I'm looking at a Raymarine Axiom which uses a dual transducer setup. Available in 0, 12, and 20 degree deadrise offsets. Thanks for any input. Link to comment Share on other sites More sharing options...
Tall Tails Posted August 25, 2017 Report Share Posted August 25, 2017 Mine was factory installed. Bronze thru the hull. It is forward of the first step and near the centerline. I read bottom at all speeds. Probably the best I've ever had for not losing bottom contact at speed. On past boats I have only had the transom mount transducers. They would lose the bottom once I got up on plane. This appears to be far superior. I have the Garmin 7610. Link to comment Share on other sites More sharing options...
slyshon Posted August 25, 2017 Report Share Posted August 25, 2017 Yes they are installed forward of the step, mine works well. If it is rough I tend to lose bottom at about 40mph, simply slow down and let it pick it back up. I also have the down/side view transom mount which rarely every loses contact. Skip Link to comment Share on other sites More sharing options...
ChrisB Posted August 25, 2017 Report Share Posted August 25, 2017 If you remove the panel under the batteries you will see the spot on the port side fwd of the step. The factory did a good job with placement you can even install the ducer without taking the boat off trailer. Link to comment Share on other sites More sharing options...
SCFD rtrd. Posted August 25, 2017 Report Share Posted August 25, 2017 The dead-rise is important. Big difference between 12 and 20 degrees. Maybe Skip knows which one to use. The degree of off-set is usually printed on the side of the transducer. I'm not afraid of drilling big holes in the hull, especially when it's someone else's boat. Bring that thing over to my house and we'll have it done in no time. Just kidding, but I did install mine. Got to measure 5 times and cut once. You probably have better access than the 23 HPS. Had to install mine through a factory provided hole in the gas tank. Link to comment Share on other sites More sharing options...
Rybuffett Posted March 8, 2018 Report Share Posted March 8, 2018 Does anyone have a picture of the transducer installed from the top on a 2500? I’m also interested in 12 vs 20degrees. I plan to install one soon! Link to comment Share on other sites More sharing options...
Vapor Trail Posted March 8, 2018 Report Share Posted March 8, 2018 If I were doing it myself I would get the boat level both directions and figure out where I wanted to drill the hole then measure the angle of deadrise at that spot with a digital level and see which degree transducer is closest. Link to comment Share on other sites More sharing options...
marzomi Posted March 8, 2018 Report Share Posted March 8, 2018 the pic below shows my transducer in my 2500. This is right under the console. The transducer I have is Thru Hull transducer 20 degree Simrad SS175H-W 20D Tilt 130-210KHZ Stainless Steel Part# 000-13782-001 Link to comment Share on other sites More sharing options...
Rybuffett Posted March 8, 2018 Report Share Posted March 8, 2018 Thanks! Link to comment Share on other sites More sharing options...
ChrisB Posted March 8, 2018 Report Share Posted March 8, 2018 Once you get the floor panel under the batteries out of the way it obvious where it goes there is an area on the port side for the ducer. A smaller ducer like the B60 will go in without taking boat off trailer you will have to mount it as far inboard as possible in the pocket. Make a pilot hole on center then use hole saw from bottom so you don't hit trailer bunk, with the bigger size like the B175CHW the boat will have to be lifted off trailer. Link to comment Share on other sites More sharing options...
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