East Coast Naval Base

In accordance with the Defence Act of 1925, from 1928, six regional command and maintenance bodies for the Swedish Navy were organized within the respective coastal areas.

[5] The East Coast Naval District (Ostkustens marindistrikt, MDO), based in Stockholm, stretched from Öregrundsgrepen, near Gräsö (Björn's Lighthouse) to the northern part of Kalmar Strait (Kråkelund).

[7] The organization was formed on 1 July 2000 and took over certain parts of the operation after the East Coast Naval Command (Ostkustens marinkommando, MKO).

Blazon: "Per pale or and azure charged with an anchor erect surmounted two gunbarrels of older pattern in saltire counterchanged".

[11] In 2005, the Ostkustens marinbas minnesmedalj ("East Coast Naval Base Commemorative Medal) in silver (MarinBOMSM) was established.

Skeppsholmen Church , memorial stones of the men from the East Coast Naval District, who sacrificed their lives during the Swedish Navy's preparedness services 1939-1945 (including Hårsfjärden disaster on 17 September 1941).