Complex sentence: The boat was sunk by a Vickers Wellington of No.172 Squadron RAF, on 3 July 1943, off Cape Ortegal, Spain, there were no survivors from the 55 man crew.
Split into simpler sentences: The boat was sunk by a Vickers Wellington of No.172 Squadron RAF, on 3 July 1943, off Cape Ortegal, Spain. There were no survivors from the 55 man crew.