echo sounder, echosounder, depth sounder, depth recorder, echosounders, echo sounders, fathometers, depth sounders, sub bottom profiler, hydrographic survey, navigation

knudsen systems inc. (ksi) is a us small business, female-owned and operated based in ogdensburg, new york. we sell knudsen echosounders manufactured by knudsen engineering ltd. we are also a gsa federal supplier for us federal buyers.