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| GERMAN UNDERWATERS ORDNANCE MINES |
| Chapter 11 - INFLUENCE MINE UNITS - SVK AND LUFTWAFFE |
| Section 7 - PRESSURE AND PRESSURE-COMBINATION UNITS |
| CHARACTERISTICS OF THE D 123 |
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Sensitivity: 1-2 cm of water |
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Period: 4-5 seconds negative |
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Contains anti-explosion device and anti-swell feature. |