Cofferdam helps preserve submariner history

January 23, 2012 rockman Project Related Comments Off on Cofferdam helps preserve submariner history
Sheet pile cofferdam around HMS Alliance

Sheet pile cofferdam around HMS Alliance

A steel sheet pile cofferdam has been built around the HMS Alliance, a British submarine launched in 1945. The cofferdam will be infilled to create a safe place to perform restoration work. [Source: New Civil Engineer. Image: NCE]

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