SUBTECH '93 features subjects as varied as contracting strategies through to hearing loss in divers. The latest developments in underwater intervention technology include presentation on remotely operated vehicles, manned submersible operations and a record-breaking simulated deep dive. Medical and physical areas of diving operations are addressed, together with operational and safety aspects. This, the sixth in the series of the jointly organised events by AODC/SUT, brings topicality, safety and economic issues to the forefront.