The T70 design is a dual stave, ten element transducer array with five elements per stave. Each stave has a separate, multi-pin, underwater connector providing access to the individual elements. This electrical configuration combined with the half wavelength element spacing enables the array to be electronically steered and shaded, achieving a design with maximum versatility.

Applications include deep water echo sounding, long range, narrow beam side scan, high performance steered cylindrical and planar arrays.

When arrays are placed end to end the external dimensions of the T70 are such that the centre to centre spacing of the elements within a stave is maintained between the end elements of adjacent staves.

The T70 is suitable for operation in towed bodies down to a depth of 750 metres. When used as a towed sidescan the port and starboard arrays can be operated with a frequency separation of 2 kHz to reduce cross channel reverberation interference.