|
|
| GERMAN UNDERWATERS ORDNANCE MINES |
| Chapter 4 - CONTACT AND MOORED INFLUENCE MINES |
| THE GERMAN EM (EINHEITSMINE) MINE SERIES |
|
The EMC I - EMC II - EMC III (Upper Antenna) |
|
General |
|
Moored, contact chemical-horn mine, laid by surface craft. |
|
Offensive or defensive mine, for use in maximum depth of water of 1700 feet. |
|
Maximum depth of case when moored is 245 feet. |
|
Description of Case. |
|
Shape |
Two hemispheres, joined by a 2 cylindcrial midsection. |
|
Material |
Steel |
|
Diameter |
46 in. |
|
Length |
48.5 in. |
|
Charge |
660 lb. block-fitted hexanite |
|
Description of External Fittings. |
|
Horns |
Seven: one in center of cover plate; four equally spaced around uper hemisphere, 22 in. from center; two, on brackets, 39 in. apart, 17 in. from center of lower hemi-sphere |
|
Cover plate |
7½ in. diameter, in center of upper hemisphere, flush type, secured by 10 bolts |
|
Base plate |
Standard type EMC II |
|
Lifting eyes |
Two, 19 in. apart, 22 in. from center of upper hemisphere |
|
Operation. Mine takes depth by plummet. Mooring tension pulls cut the mooring spind-le, closing the mooring safety switch, tripping the booster release lever and the mine is armed. |
|
Standard chemical-horn firing. |
|
The only self-disarming device is the mooring safety switch which is designed to dis-arm the mine by opening the firing circuit upon release of mooring tension. |
|
Figure 9 – EMC II Mine with Rubber Snap Line |
|
|
|
|
