Sub-bottom profiler model 3100P with Towfish SB-216S
On board r/v Oceanograf there is a sub-bottom profiler (SBP) model 3100P with TowFish SB-216S by EdgeTech. This device operates in the 2-16 kHz frequency range (chirp type). The towed fish is fitted with transducers and hydrophones mounted under an acoustic baffle inside the unit. Sediment penetration using the SB-216S ranges from about 6 m for coarse sands and gravels to about 80m for acoustically soft sediments (e.g. mud). The beam width ranges from 17° to 24° depending on the selected operating frequency range (17°: 2 – 15 kHz, 20°: 2 – 12 kHz, 24°: 2 – 10 kHz ).