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Infrastructure, Transportation and Supply

Storage and depots

Sea Mine Depot

Naissaare meremiinide ladu ja montaažitehas

Naissaare meremiinide ladu ja montaažitehas

Full name of site:

Naissaare meremiinide ladu ja montaažitehas – Naissaar island naval mine depot and factory


Lõunaküla / Storbyn, 74001 Harju maakond, Estland

Operational period:




Primary user:

Soviet Navy


The mine weapons depot as a complex with all buildings and railways is an unique military object in Estonia. The mine factory and depots are located on an area of approx. 82 ha in the middle of the southern part of the island of Naissaar. All warehouses, open mine platforms and factory buildings are connected to the railway branches. The complex was built with the aim of mining the western parts of the Gulf of Finland quickly, if necessary. The accompanying activities were the repair, maintenance and assembly of sea mines. During the Cold War, the mine depot was one of the most important military structures on the island. Another important object was the zenith missile base located in the northern part of the island. There was also a maritime border guard cordon and a technical observation point. The whole island was completely inaccessible to civilians.


The territory of mine depot and factory is partly private and partly publicly owned

Valuation of authenticity and integrity:

Baseline 1993. Warehouses for mine components and spare parts are either completely collapsed or falling apart. The condition of the sea mine depot platforms is satisfactory. The buildings of mine factory are in bad condition.

Status and access:

Access: Currently the access to the territory of the sea mine depot and factory is free for the public

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