This story appeared in the Scottish edition of the Daily Mail for Thursday 15th September 2011. It looks like it did not make the UK website of the Mail, so it is reproduced here for those outside of Scotland.
From Scotland print edition of The Daily Mail:
There is no sign of the trademark elongated neck, or the signature green humps. But the experts believe this almost unfathomable sonar image could be a breakthrough in the hint for Nessie that began in earnest in 1934.