THE ROYAL NAVY DURING THE SECOND WORLD WAR - In this machine, commonly called a "whirler", zinc plates are given a sensitised coating. Photographic negatives are then printed down on to these plates, from which the copies of the charts are printed. The machine is being tended by Sergeant W H Baldwin, RM, of Nottingham on board HMS WHITE BEAR, a hydrographic survey vessel serving with the East Indies Fleet, at Colombo. She acts as headquarters for smaller vessels which penetrate small creeks and rivers to survey areas either uncharted or not charted for many years. The data obtained by these sh
THE ROYAL NAVY DURING THE SECOND WORLD WAR - In this machine, commonly called a "whirler", zinc plates are given a sensitised coating. Photographic negatives are then printed down on to these plates, from which the copies of the charts are printed. The machine is being tended by Sergeant W H Baldwin, RM, of Nottingham on board HMS WHITE BEAR, a hydrographic survey vessel serving with the East Indies Fleet, at Colombo. She acts as headquarters for smaller vessels which penetrate small creeks and rivers to survey areas either uncharted or not charted for many years. The data obtained by these ships is then transformed into charts for allied shipping, with the help of a printing plant which makes HMS WHITE BEAR a floating advanced printing unit Royal Navy, WHITE BEAR (HMS)
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