The frame of the artpieces is a historical deep-sea mine of AGSB-type, made in Russia in 1942. It was a big galvanic deep-sea mine, equipped with "Blok" device and two contact electro-magnetic antennas. The upper antenna was kept steady by a buoy. The mine was used to fight submarines. It was still manufactured in the 50-ies.
The measures of the original mine are: diameter: 875 mm, weight: 1140 kg, Explosive charge: 240 kg.
Mines of Estonian waters
www.marinemine.com