The EdgeTech SB-216S, 3100 is a small portable swept frequency chirp sub bottom profiler that is ideally suited to small vessel shallow water applications. The Chirp Technology gives increased signal to noise ratios obtained with less peak power, improved resolution due to increased bandwidth and the removal of ringing which tends to mask data when using conventional sub bottom profilers in shallow water. The rental system comes complete with portable processor, Laptop PC with Discover logging software, towfish and a 75m soft tow cable.