During the Vietnam War, the mining of the Mekong River with these mines against US patrol boats did not give any result due to the algae accumulated on the rods. The mines exploded 2-3 hours after installation. The mining of the coastal strip of the Suez Canal also did not give any result. The sand under the ballast plates was quickly washed out, the mines overturned and exploded, or they were carried away by the current
Designed to disable enemy watercraft (floating transporters, cars, boats, barges, boats, amphibians, ferries, etc.) when they overcome water obstacles (rivers, lakes, reservoirs, etc.). It is used in the coastal zone of rivers, lakes, seas, bays.
The mine is a spherical segment of steel filled with explosives and mounted on a heavy steel ballast plate. A VPDM-1M or VPDM-1 inclined detonator is mounted on top, with a target sensor rod.
When the watercraft impacts the boom, it tilts and the MD-10 fuse detonates the mine's explosive charge. During the explosion, a hole is formed in the enemy vehicle's hull, and the water hammer disables the vehicle's engine and transmission.
The mine is installed on the bottom of the reservoir at a depth of 1.1-2.0 m manually from the shore or from a PTS type watercraft. It is possible to install a mine from a helicopter. The installation of these mines can only be done in advance, in the absence of an enemy on the other shore, because a significant amount of work, a fairly large number of personnel participating in the work unmask the work. Also, there is always a lot of grass, garbage, logs, branches, and other objects floating downstream, which often leads to false alarms
Demining is prohibited.
Color: Green. The marking is applied with black paint on the side surface and contains: - PDM-1 or PDM-1M – mine code; - 80-1-88 – manufacturer’s code – batch number – year of manufacture; - T – equipment code.