Dutch navy shipyard at Den Helder, Netherlands with minesweepers and floating dry docks in 1975

The minesweeper M812 (ex-MSC 178) is the Ommen, laid down at the shipyard L.&K. Smits scheepswerf, Kinderdijk, Netherlands on 22 December 1953, launched on 24 May 1955 and commissioned on 19 April 1956.