The boat I am buying has an old Garmin GPS MAP182 non color chartplotter. There is no depth sounder assocaited with it. I was thinking of replacing it with the Garmin 541S which has the same dimensions as the 182 so it will fit in the same location. I was told that I could avoid drilling another hole in the hull by using a in hull transducer. I am only interested in reading depth and an rarely boat in waters greater than 60 feet (20 meters). Will a in hull transducer work in this setting? Are they as acurate as a thru hull transducer? Do they work OK while on plane? Is there only one transducer that works with this unit?
Thanks
Thanks