The cause of the death of the Soviet submarine "D-1", which sank in the Barents Sea in 1940, will be attempted to be established using a high-precision 3D model created following a deep-sea expedition. The work will be carried out by the "People of the Sea" foundation in conjunction with the Russian Geographical Society, the Northern Fleet and JSC "Gazprom Shelfproekt".
To study the submarine hull, specialists will use an underwater photogrammetric complex with a resolution of less than 1 cm, capable of operating at depths of up to 3 m. The frames will allow creating a detailed 3D model that will help establish the exact causes of the "D-1" death.
As part of the project, a memorial action is planned — a memorial plaque will be lowered to the side in memory of the deceased sailors, and water and soil samples will be taken from the site of the submarine death for scientific analysis. All results will be published on the GIS portal "Russia — from sea to sea" so that researchers and historians can study the object remotely.
The death of "D-1" in 1940 in the Motovsky Bay with 55 crew members remains a mystery. The official version is exceeding the maximum immersion depth, among the unofficial ones are rudder jam, torpedoing or hitting a minefield. The submarine was discovered only in 2014 at a depth of 256 m by the Main Directorate of Deep-Sea Research of the Ministry of Defense.
