The T403 and T404 transducers have been designed to compliment shallow water echo sounder surveying operations typically carried out by Port and River Authorities.

Eliminating the need to deploy a tow fish, these side-scan transducers can be mounted directly onto the hull and inclined downwards away from the surface, to provide useful “fill-in data” between adjacent survey runs.

Available at the popular frequencies of 200kHz (T403) and 210 kHz (T404), both offer a choice of wide and narrow horizontal beam widths that can be selected from the bridge to optimise the picture detail.

Designed for hull mounting, these transducers can also be fitted to towed bodies and used down to 600 metres depth with a deep water option down to 2000 metres.

Electrical connection to the transducer is by a four core screened cable with a tough PU outer jacket that facilitates moulding to underwater connectors.

Both transducers are available with or without calibration. All calibrations are traceable to National Standards.