> Its exact location was unknown for more than a century, but scientists have now found the wreck of the Mesaba by using multibeam sonar. The offshore surveying tool uses sound waves to enable seabed mapping in such detail that the superstructure can be revealed on sonar images, allowing researchers at Bangor University and Bournemouth University in the UK to positively identify the shipwreck in the Irish Sea.

TIL, the radar is detailed enough to ID the ships without using a submarine.