1991

VTT

VTT carried out a programme on underwater technology research in 1987-1989. This publication contains the papers presented at the final seminar of the programme. The papers describe the work made and the main results achieved in the eight research projects of the programme which dealt with underwater materials technology, flexible riser systems and underwater vehicles. The main results include a numerical simulation method, verified by full-scale tests, for manoeuvring motions of a Remotely Operated Vehicle (ROV), a concept for transmitting cableless a live video image from a ROV to a support ship, a high pressure research chamber for investigating behaviour of structural materials in deep sea conditions, and instrumentation to help the control of an underwater manipulator, including a new remotely operated calibration method for magnetic particle testing.