Mystery continues to surround the unidentified vessel lying in the depths of the Foyle.
Work is being carried out to try and determine the identity of the vessel discovered by divers working on the river bed earlier this month.
Last week the north’s environment minister Alex Attwood chaired a multi agency meeting in Derry to determine how to proceed with identifying the vessel.
A spokesman for the Department of Environment today told the ‘Journal’ that the results of a new sonar survey are currently being examined.
“The survey data collected is still being processed,” he says.
Earlier this month archivist George A Malcolmson of the Royal Navy Museum dismissed a theory that the vessel could be a British World War II X-Craft, saying that it is more likely to be a German submarine.
“There are no records to support the theory that it is a British X craft. Anybody wishing to see a wartime X craft would have to visit our museum which is home to HMS X24, the only surviving wartime example of the class.
“The current theory is that it may be a small German craft surrendered at the end of World War II. The basis for that theory is the photograph which shows a small and as yet unidentified U boat in Lisahally at the end of the war,“ he said.