"Noah's Ark: Superstructure to Preserve Navy's Small Craft -- A view of men at work building the "Noah's Ark" preserving superstructure on one of the minesweepers moored in Haslar Creek, Portsmouth. A number of small craft with superstructures of curious ark-like appearance have recently been seen in the Solent and at Spithead and a number are also moored in Haslar Creek, Portsmouth. The appearance of these modern "Noah's Arks" is the outcome of a Reserve Fleet programme for the preservation of newly constructed inshore minesweepers of which the Navy has constructed a large number to build up it's minesweeping forces. May 09, 1955. (Photo by Fox Photos).