27 Jun, 1941
L-3 lays a minefield off Memel.

19 Jul, 1941
L-3 lays a minefield off Brüsterort.

1 Oct, 1941
L-3 was anchored in harbour of Suursaari island (Gulf of Finland) when Finnish Navy motor torpedo boats attacked. One torpedo explosion damaged L-3.

1 Oct, 1941
The Latvian merchant Kaija (1876 GRT) is sunk off Memel in position 55º45'N, 21º00'E when she hits a mine laid by the Soviet submarine L-3 on 27 June 1941. (see map)

19 Nov, 1941
The German merchant Henny (764 GRT) is sunk off Memel in position 55º45'N, 21º00'E when she hits a mine laid by the Soviet submarine L-3 on 27 June 1941. (see map)

22 Nov, 1941
The small Swedish tanker Uno (430 GRT) is sunk off Memel in position 55º45'N, 21º00'E when she hits a mine laid by the Soviet submarine L-3 on 27 June 1941. It is also possible that Uno was sunk on a German defensive minebarrage. (see map)

26 Nov, 1941
The German merchant Engerau (1142 GRT) is sunk off Memel in position 55º45'N, 21º00'E when she hits a mine laid by the Soviet submarine L-3 on 27 June 1941. (see map)

18 Aug, 1942
L-3 torpedoes and sinks the Swedish merchant C.F. Liljevalch (5492 GRT) west of Gotland in position 57º37'N, 17º00'E. (see map)

25 Aug, 1942
L-3 lays a minefield.

The small German merchant Franz Bohmke (210 GRT, former Dutch Vledderveen) is mined and sunk in position 55º08'N, 13º05'E. The mine was laid the same day by L-3. (see map)

26 Aug, 1942
L-3 lays more mines.

L-3 also fires four torpedoes against two merchants in position 55º13'N, 14º01'E. The torpedoes however missed their targets. (see map)

1 Sep, 1942
At 1712 hours L-3 fires two torpedoes at ' what is identified as ' a destroyer in the Baltic Sea about 50 nautical miles south-east of Karlskrona, Sweden in position 55º52'N, 17º01'E. The torpedoes however missed their target.

At 1732 hours L-3 fires four torpedoes at ' what are indentied as ' two merchants. Once again the torpedoes missed their targets. (see map)

2 Nov, 1942
L-3 lays a minefield off Utö.

5 Nov, 1942
L-3 lays a minefield off Libau.

6 Nov, 1942
While on patrol west of Klaipeda, Lithuania L-3 fires two torpedoes at what is identified as 'a destroyer'. The torpedoes miss their target.

13 Nov, 1942
L-3 lays a minefield in the Irben Strait.

17 Nov, 1942
The German merchant Hindenburg (7880 GRT) is mined and sunk off Utö, Finland in position 59º40'N, 21º20'E. The mine was laid on 2 November 1942 by the Soviet submarine L-3. (see map)

9 Dec, 1942
The German merchant Edith Bosselmann (952 GRT) is mined and sunk off Klaipeda, Lithuania in position 56º05'N, 20º05'E. The mine was laid on 5 November 1942 by the Soviet submarine L-3. (see map)

5 Feb, 1943
The German merchant Tristan is probably mined and sunk off Klaipeda, Lithuania. The ship was enroute from Danzig to Klaipeda and disappeared without a trace. If she was mined it's likely the mine might have been laid by the Soviet submarine L-3 on 5 November 1942.

5 Feb, 1943
The German merchant Grundsee (866 BRT) is probably mined and sunk off Klaipeda, Lithuania. The ship was enroute from Danzig to Klaipeda. If she was mined it's likely the mine might have been laid by the Soviet submarine L-3 on 5 November 1942.

30 Mar, 1943
The German submarine U-416 was sunk in the Baltic Sea near Bornholm in position 54.55N, 14.45E by a mine laid on 26 August 1942 by the Soviet submarine L-3. U-416 was raised on 8 April 1943 and recommissioned as a training submarine on 4 October 1943. (see map)

11 Oct, 1944
L-3 lays a minefield near Cape Arkona.

15 Oct, 1944
At 0050 hours L-3 fires three torpedoes at what is identified as a merchant of approx. 3000 GRT 10 nautical miles south-west of Smygehuk, Sweden. The torpedoes miss their (so far unidentified) target.

25 Oct, 1944
At 0738 hours L-3 fires two torpedoes at what is identified as a merchant 6 nautical miles north-west of Klaipeda, Lithuania. The torpedoes miss their (so far unidentified) target.

26 Oct, 1944
At 1011 hours L-3 fires two torpedoes at what is identified as a auxiliary patrol vessel 6 nautical miles north-west of Polangen, Lithuania. The torpedoes miss their (so far unidentified) target.

14 Nov, 1944
The German sailing vessel Albert Leo Schlageter (1634 GRT) is damaged when she hits a mine north-east of Cape Arkona in position 54º51'N, 13º35'E.

The mine was laid by the Soviet submarine L-3 on 11 October 1944. (see map)

20 Nov, 1944
The German torpedo boat T 34 (1294 tons) is sunk when she hits a mine north-east of Cape Arkona in position 54º40'N, 13º29'E.

The mine was laid by the Soviet submarine L-3 on 11 October 1944. (see map)

26 Jan, 1945
L-3 lays a minefiled off Ventspils, Latvia.

29 Jan, 1945
The German merchant Henry Lütgens (1141 GRT) is mined and sunk off Ventspils, Latvia in position 57º20'N, 21º20'E.

The mine was laid on 26 January 1945 by the Soviet submarine L-3. (see map)

31 Jan, 1945
At 0628 hours L-3 fires three torpedoes at what is identified as a merchant of approx. 3000 GRT) off Ventspils, Latvia in position 57º16'N, 21º07'E. The torpedoes miss their (so far unidentified) target.

While continue to operate in the same area, at 2147 hours L-3 fires three torpedoes at what is identified as a merchant. The torpedoes miss their (so far unidentified) target.

Still operating in the same area, at 2212 hours L-3 fires three torpedoes at what is identified as a merchant and once again the torpedoes miss their (so far unidentified) target. (see map)

2 Feb, 1945
L-3 lays a minefield off Libau.

4 Feb, 1945
At 1211 hours L-3 fires three torpedoes against the German torpedo boat T 36 and at ' what is identified as ' a minesweeper north-east of Brüsterort in position 55º00'N, 20º20'E. All torpedoes missed their targets. (see map)

7 Feb, 1945
The German icebreaker Pollux (4191 GRT) is mined and heavily damaged when she hits a mine 7 nautical mines south-west of Pillau. The mine was laid on 2 February 1945 by the Soviet submarine L-3. The Pollux is beached to prevent her from sinking.

23 Mar, 1945
L-3 lays a minefield off Rixhöft.

The same day the German auxiliary minesweeper M 3138 (112 GRT) is mined and sunk in position 54º46'N, 18º45'E after hitting one of these mines. (see map)

30 Mar, 1945
The German merchant Jersbek (2804 GRT) is mined and sunk when she hits a mine off Pillau. The mine was possibly laid on 2 February 1945 by the Soviet submarine L-3.

17 Apr, 1945
L-3 torpedoes and sinks the German merchant Goya (5230 GRT) off Rixhöft in position 55º09'N, 18º25'E. The Goya was packed with some 7000 refugees from Hela that were fleeing to the west. Only 334 survivors were picked up. (see map)