In 1987, during Operation Deepscan, which used echo-sounding
equipment in the depths of Loch Ness, BBC News reported that scientists had made sonar contact with a large, unidentified object of unusual size and strength at a depth of 600 feet (180 metres).
Cardiff marine technician Leighton Rolley was part of the Schmidt Ocean Institute (SOI) team which was testing underwater echo-sounding
equipment used for environmental research when the historic vessel was found.
Nugroho said rescue teams would use echo-sounding
to analyse the position of the bridge s underwater metal frame to ensure it is safe to start removing the debris.
The team used echo-sounding
equipment, which works much like underwater radar, to find the krill across an area of water equivalent to the eastern half of the Atlantic Ocean.
The 30-year-old from Wrexham used echo-sounding
equipment and other sensitive instruments, plus extensive documentary research.