Timeline of Baltic mystery sub drama

Oct 3-5: Russian-owned tanker NS Concord sails from St Petersburg to Baltic Sea. Ship circles off Stockholm, in international waters, for 16 days

Oct 11-16: Warships from Sweden, Denmark, Poland and Netherlands take part in Baltic Sea exercise Northern Archer. On Oct 16, Dutch submarine HNLMS Bruinvis sails to Tallinn, Estonia 

Oct 16: Presence of unknown underwater object reported off Stockholm

Oct 17: Media reports of encrypted radio transmissions from area

Oct 18: Russian research vessel Professor Logachev sails from St Petersburg to Baltic Sea 

----------------------------------

200 miles, 320km

NORWAY

DEN.

GERMANY

SWEDEN

Stockholm

Baltic Sea

Gotland

POLAND

FINLAND

St. Petersburg.

Tallinn ESTONIA

Russia

LATVIA

LITHUANIA

Kaliningrad: HQ of Russian Baltic fleet

-----------------------------

SWEDEN

Stockholm

Muskö naval base

Nynäshamn

Möja

Runmarö

Nämdö

Ornö

Baltic Sea

Nåttarö

--------------------

Stockholm archipelago: Search area extends from Möja to Nynäshamn. Civilian vessels told to evacuate area

Oct 20: Russia claims mystery vessel could be Dutch sub 

Oct 21: Jane’s Defence Weekly speculates that mystery vessel could be Russian Losos Class sub, launched covertly from beneath larger vessel

Oct 22: Concord sails in direction of St. Petersburg. Logachev remains in Baltic Sea

-------------------------
Project 865 Piranya Losos Class

Length: 28.2m. Speed: 6.65 knots dived

Crew: 9. Endurance: 10 days. Diving depth: 200m. Armament: 2 mines or 2 torpedoes. Titanium alloy hull reduces effectiveness of enemy mines

Sources: U.S. Naval Institute, IHS Jane’s, Global Security, MarineTraffic.com

words 251