Converted 250 tons lake freighter is used for exploratory drilling for natural gas deposits off Lake Erie's Canadian shores; ship has her drilling platform located amidship; beneath platform, ship has been cut away to water, leaving opening about 15 ft in diam; plate steel welded together in shape of cylinder forms vertical core that extends from just below deck level and is welded to hull bottom to make ship watertight.
From freighter to drilling ship
Petroleum Mgmt
Petroleum Management ; 34 , n 4
1962
2 pages
Article (Journal)
English
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