The PIM card is programmed to accept unlimited analogue inputs (0-5 Volt), sixteen digital inputs (on/off), sixteen digital outputs (on/off) and two serial channels. The digital data is combined with the serial input data stream. This data stream is then transmitted to a host computer, using the onboard RS232 communication port or optional RS 422 and Ethernet outputs.

A second communication port is provided which can read the output of serial sensors. The 16 digital output lines are controlled via a microprocessor, programmed to switch auxiliary equipment on or off.

By using a single serial data stream to read and control multiple sensors, the PIM is ideal for use with radio modems, satellite modems or mobile phone modems for remote data collection. It can also reduce the wires required to send sensor data - thus reducing the cost of cables and connectors.

The PIM has previously been used for ROV instrumentation and control, as an underwater camera and lighting controller and as a submarine pitch roll and heading sensor. For specialised applications the unit can be programmed to the customer's requirements using Pascal, C, Basic or assembler.

A rugged plasma touch screen provides the monitoring and control interface and the system is configurable for all vessel types and sizes.

Development costs for WatchKeeper ORION are expected to be in the region of £24,000, the majority of the development being sub-contracted to B J Marine Tech Limited and Dragon Design Limited, both Dorset companies.

Nicholas R Messinger, Freetrack Marine. T: 01258-817743. F: 01747-841556. E: nicholas.messinger@freetrackmarine.com W: freetrackmarine.com