L7248 Prototype was the first Lerwick built. The 1st image shows a very early version with none stepped float. The 2nd was taken at M.A.E.E  Felixstowe, note old style tail and no rear turret again. 5th image  it has a dark top to the tail. In the 7th image you can see L7248 still with no tail gun. Crashed 21/10/41.The last image is L7248 moored at Felixstowe M.A.E.E.  in 1939.