Technical and tactical characteristics of the YaRM mine
- Mine type
- anti-landing anchored high-explosive contact-action mine
- Body
- steel
- Weight
- 13 kg
- Explosive charge weight
- 3 kg
- Type of explosive
- TNT
- Diameter
- 275 mm
- Height
- 310 mm
- Emplacement depth
- 1-12 m
- Target sensor submergence below the water surface
- 0.1, 0.3, 0.5, 0.7 m
- Operating temperature range
- 0 to +30 °C
The mine is emplaced on the bottom of a body of water at a depth of 1 to 12 meters from watercraft (motor boat, amphibious transporter, boat, barge). The floating section is positioned 0.1-0.7 m below the water surface, while the anchor section rests on the bottom of the body of water, preventing the floating section from drifting away.
After the mine detonator is submerged in water, the sugar safety device dissolves and the mine transitions to the armed state. The dissolution time of the sugar safety device ranges from 10 minutes at a water temperature of 12 °C to 40 minutes at a water temperature of approximately 0 °C.
The mine functions when the crosspiece located in the upper part of the mine is touched with a force of 0.6-0.9 kg. When the mine detonates, a breach is formed in the hull of the enemy watercraft, and the hydraulic shock disables the vehicle’s engine and transmission (tearing them from their mountings).
The mine’s service life in the armed state is not limited, because the VRM detonator is of the mechanical type and has no power-supply elements. The mine is not fitted with a self-destruct device. It has no anti-lift or anti-handling elements. The anchor holds the mine in place at current speeds of up to 1 m/s.
Coloring
Gray, battleship gray.
Marking
Standard marking, applied in black paint to the side surface and includes:
- YaRM - mine code.
- 121-1-75 - manufacturer’s plant code - batch number - year of manufacture.
- T - filling code.