Tactical and technical characteristics of the UPM mine
- Mine type
- object high-explosive timer-actuated
- Body
- steel
- Weight
- 14.6 kg
- Explosive weight
- 7 kg
- Explosive type
- MS
- Length
- 530 mm
- Width
- 230 mm
- Height
- 170 mm
- Combat capabilities of the mine
- a 500 x 600 mm hole in an 80 mm thick steel plate
- Holding force of the magnets
- 100-150 kg
- Delay to detonation with the VZD-1M detonator
- 15 minutes - 40 days (depending on the metal element and temperature)
- Delay to detonation with the VZD-20M detonator
- 1, 2.5, 4, 6, 8, 10, 12, 14, 16, 18, 20 hours
- Temperature range of employment
- -40 to +40 °C
Primarily, the mine is used by Navy combat swimmers for sabotage purposes (Fig. 2). To provide the mine with neutral buoyancy, a foam plastic float is attached to its upper surface.
The mine is secured to the target by means of magnets located on the flat part of the mine. The holding force of the magnets ensures reliable attachment of the mine to the hull of a vessel moving at speeds of up to 30 knots.
The mine detonates after the preset operating time of a delayed-action detonator of the VZD-1M or VZD-20M type has elapsed. The operating time of the VZD-1M is determined by the number of the metal element installed in the detonator in advance. The operating time of the VZD-20M is determined by the preset operating time of the clockwork mechanism. Two detonators may be installed in the mine simultaneously to increase the reliability of functioning.
The mine may be set for anti-removal by means of a ZN detonator, which detonates the mine when an attempt is made to remove it from the target.
Coloring
Gray, ball-type.
Marking
Standard, applied in black paint to the side and includes:
- UPM - mine code.
- 60-20-80 - manufacturer’s plant code - batch number - year of manufacture.
- MS - filling code.
