but the or pres sing, pontoon of the and in non-ti- structure, in- dal basins. At stead of con- the same time sisting of a i t possesses complete base several advan- of caissons, ex- tages over the tending the graving dock, whole 1 ength and if properly of the do ck, is cared for is built up of a… … of marine Pontoon Raised, Ready for Another Ship. of the vertical engineeri n g . wall of the A public com- A 6,000-TON FLOATING DEPOSITING PONTOON DOCK. dock, opposite petition was to that to which the fingers are attached, is a floating in Russia for several years past; but neither of these…
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