Survey Equipment

Impact Subsea ISA500: Underwater Altimeter and Echosounder

Availability: Rental, Sale

The Impact Subsea ISA500 is a highly robust Altimeter with optional integrated Attitude & Heading Reference System (AHRS). It utilises a broadband composite transducer together with an advanced digital acoustic engine to provide the highest level of stability and range available from a 500kHz Altimeter.


120+ Meter Range

Millimeter Accuracy

Optional Heading, Pitch & Roll

Software to View, Log & Configure

Digital & Analogue Interfaces


Frequency: 500 kHz (Standard), 400 to 600 kHz (Selectable)

Range: 0.1 to 120 m

Resolution: 1 mm

Beam Angle: 6 degree canonical at 500 kHz

Signalling: Monotronic


ROV & AUV Altitude, Heading and Altitude.

Used for hydrographic survey and touchdown monitoring.

Underwater positioning for marine research operations.

Scour Monitoring and motion Reference

Equipment Deployment

Under Ice Measurement, and Wave Height Measurement

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