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| | Submarine USS O-9 (SS-70) |
 | | USS O-9 departed Newport, Rhode Island, on 2 November 1918 for European waters; but the termination of World War I hostilities on 11 November 1918 brought the twenty-submarine group, of which USS O-9 was a unit, back to the United States before they reached the Azores. |
 | | In a sensational rescue, 33 of the Squalus' officers and men were saved by a new diving bell, but that shining new craft rested in only 240 feet of water and was equipped to handle the diving bell on a special escape hatch. |
 | | When the Squalus was being towed back to Portsmouth after being raised late in the summer of 1939, she grounded frequently, even though lifted well off the bottom by huge pontoons. |
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