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| | Fort Drum, the unsinkable 'battleship' of Manila Bay - FEATURES (December 6, 1998) |
 | | The ruined concrete fortification is Fort Drum, formerly El Fraile Island, a concrete battleship, the only unsinkable battleship in the world, and one of the greatest military fortifications of all time. |
 | | Of the forts, Corregidor was the biggest and most important; however, El Fraile or Fort Drum, the smallest, was the most unique. |
 | | To build Fort Drum, the US Army Corps of Engineers cut El Fraile, a small rocky island to the mean water line, and, using the rock as foundation, erected a concrete fortification shaped like a battleship. |
| www.travelsmart.net /ph/inquirer/issues/dec98/dec06/features/fea_main.htm (1316 words) |
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