Analysis of information sources in references of the Wikipedia article "Air lock diving-bell plant" in English language version.
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ignored (help)Facts and photographs...from Messrs. Siebe, Gorman & Co., Submarine Engineers to the British Admiralty and War Office.
Caisson diving bell barge built for the Admiralty for service in Gibraltar. Forrestt & Co. Ltd, 1905 Catalogue, Page 59.
Caisson diving bell barge built for the Admiralty for service in Gibraltar. Forrestt & Co. Ltd. See 1905 Catalogue, Page 59 for more info
Caisson diving bell barge built for the Admiralty for service in Gibraltar. Forrestt & Co. Ltd, 1905 Catalogue, Page 59.
Caisson diving bell barge built for the Admiralty for service in Gibraltar. Forrestt & Co. Ltd. See 1905 Catalogue, Page 59 for more info