Japanese motor tanker (ex-Corabank 1931-1937) Rikko Maru 1937-1945

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Call sign JDAM. Owner in 1939 Nippon Skikyu K.K, Tokyo, Japan. Laid down by Workman Clark Ld., Belfast, Northern Ireland for account of Andrew Weir Shipping&Trading Co. Ltd., (Bank Line), Glasgow/London, United Kingdom with yard number 516 in end 1931, launched in 1932, completed in August 1932, bought in October 1937, requisitioned by Japanese government and allotted to the army in end 1941, damaged during air attack off Mako on 3 January 1945, again damaged in an air attack on 21 January 1945, broken in two parts during a typhoon off Kirun and sunk on 6 March 1945. Gross tonnage 9,181 tons, net tonnage 7,143 tons, deadweight 13,000 tons and as dimensions 477.0 x 63.8 x 35.6 x 9 (light)28- (loaded) feet. , single screw, oil bunker capacity 750 ton, oil carrying capacity 90,000 barrels (of 42 gallons), range 17,500 nautical miles/11 knots and speed 78 rpm/11 (normal cruising)-13.5 (maximum) knots. 

Russian intelligence gathering ship RFS Kildin SSV 512 1969-

Great Belt Bridge, Denmark 18 July 2026

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Project 861/Moma-class hydrographic survey vessel converted iin 1970 nto an intelligence gathering ship. Laid down by Stocznia Polnocna Shipyard, Gdansk, Poland with yard number 861/13 on 31 December 1969, commissioned on 23 May 1970. 

French intelligence gathering ship (SIGINT) Dupuy de Lorme A759 2004-

Great Belt Bridge, Denmark 13 July 2026

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France-flagged, IMO 9282156, MMSI 228716000 and call sign FALM. Launched by Royal Niestern Sander, Delfzijl Netherlands with yard number 816 on 27 March 2004, commissioned in April 2006. 

Russian intelligence gathering ship RFS Kildin SSV 512 1969-

Great Belt Bridge, Denmark 13 July 2026

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Project 861/Moma-class hydrographic survey vessel converted iin 1970 nto an intelligence gathering ship. Laid down by Stocznia Polnocna Shipyard, Gedansk, Poland with yard number 861/13 on 31 December 1969, commissioned on 23 May 1970. 

German signals intelligence and reconnaissance vessel FGS Oker A 53 1986-

Great Belt, Denmark, 6 July 2026

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Part of Oste-class Type 423, officially called fleet service ships preceded by Type 422 class succeeded by Type 424. Ordered on 3 July 1985, laid down by Flensburger Schiffbau-Gesellschaft, Flensburg, Germany on 15 December 1986, launched on 24 September 1987 and commissioned on 10 November 1988. Germany-flagged, IMO 4549200, MMSI 211211460 and call sign DRHG. 

Russian intelligence collection vessel (ex-Odograf 1988-2004) Viktor Leonov CCB-175 2004-

Great Belt, Denmark 5 June 2026

Part Project 864, called by NATO Vishnya-class SIGINT ships , also known as Meridian-class preceded by Balzam-class succeeded by Yury Ivanov-class. Commissioned on 5 October 1988. Built by Remontowa Shipbuilding SA/Stocznia Polocna, Gdansk, Poland. Northern Fleet with yardnumber 864/7. Renamed in April 2004. IMO 4617904. 

Russian intellligence ship RFS (ex-Pelengator SSV231 1987-2000) Vasily Tatichev 2000-

Passing Helsingborg 19 August 2025

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Part of Vishnua- or Meridian-class (Project 864) preceded by Balzam-class succeeded by Yury Ivanov-class. Launched with yard number 864/6 by Remontowa Shipbuilding SA, Gdansk, Poland on 27 November 1987,, commissioned on 23 July 1988 and renamed on 31 January 2000.

Russian electronic intelligence gathering ship RFS Kildin SSV512 1969-

Great Belt Bridge, Denmark 12 April 2025

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Russia-flagged, IMO 461798. Launched at the Stocznia Polnocna Shipyard, Gdansk, Poland as part of Moma-class survey vessels annex buoy tenders in 1969, commissioned as a hydrographic survey vessel in 1970, converted into a intelligence gathering ship project 861M in 1970.

Time needed for constructing American warships reported in 1936

An item reported the building time for several types of warships built for the US Navy:

Battleships and aircraft carriers:time on ways 24 months total building time 42 months

Heavy and light cruisers: time on ways 24months total building time 38months

Destroyers and gunboats: time on ways 12 months total building time 30 months

Submarines: time on ways 18 months total building time 30 months

Coast Guard cutters: time on ways 12 months total building time 24months

Source

Munitions Industry. Report on War Department bills S.1716-S relating to industrial mobilization in wartime by the Special Committee on investigation of the Munitions Industry United States Senate persuant to S. Res. 206 (73d Congress). June 15 (calendar day, June19), 1936 ordered to be printed. Washington, 1936.

Croatian merchant ship Cetinje in 1943

According to a letter dated Zagreb 4 November 1943 of the German embassy at Zagreb to the Department of an independent Croatia were the results represented of a investigation concerning Croatian merchant coastal shipping and navy. Except for what was Croatian private property [in the past until April 1941 Yugoslavian] was also described if possible what the Italians had taken away. One list was of the steamships of the shipping company Zetska Plovida D.D, Kotor, Montenegro. Their ships served in the Bay of Kotor and surrounding area. The ships active on the Skutarisee (Lake Shkodër) on the border between Montenegro and Albania] and river Bojana were not mentioned. The company was located at Cetinje, the administration at Kotor both in Montenegro, part of the capital was Montegrin.

Original name Cetinje. Homeport in 1941 Kotor. Gross register tonnage 100 tons. Net register tonnage 44 tons. .Deadweight 50 tons. Built in 1903.(1)

Note

1. The Independent State of Croatia was established after Yugoslavia was captured by Italy and Germany on 10 April 1941. This state was first an Italian Protectorate between 1941-1943 and then a German puppet state between 1943-1945.

Source

Bundesarchiv TM-12-II/4

Rear admiral Raskosow commanded the Russian naval forces at Archangel according to the Weekly Intelligence Summary No. 8 dated 25 February 1922

An item reported that rear admiral Raskosow became commander-in-chief of the Russian naval forces stationed at Archangel.

Source

The National Archives, Kew Gardens, England CAB-24-133-91

Japanese deep-sea trawler Mamiya Maru 1930-

Call sign JHHC. Gross tonnage 398 tons, under deck 280 tons, net tonnage 197 tons and as dimensions 145.0 x 24.0 x 14.0 metres. Laid down by Mitsubsihi Zohensko K.K., Hiroshima, Japan on 10 April 1930, launched on 28 June 1930, completed on 23 August 1930, since 1937 owned by Nippon Suisan K.K., Tobata. Japan, converted for military purposes at the Kawasaki K.K. Shipyard  including a gun and 2 machine guns, requisitioned by the Imperial Japanese Navy on 6 November 1937, became an auxiliary minesweeper, returned to owners in 1938, again requisitioned by the navy on 4 April 1940, became a storeship, sunk by American aircraft carrier based planes near Iwo Jima on 15 June 1944 and stricken on 10 September 1944.

Hungarian inland ladder dredger Csallokoz in 1921

After the First World War (1914-1918) lost by the German, Austro-Hungarian and Ottoman Empires was Walker D. Hines appointed as international arbitrator responsible for the ceding of tugs and other inland vessels by Germany, Bulgaria, Austria and Hungary to the Allied Powers. For Austria respectively Hungary were the Treaties of St. Germain and Trianon leading. Lists were made of the involved vessels including some details and what their fate was to be.

A list dated Paris, France 2 August 1921 reported that prior to the end of the hostilities Hungary possessed over material for maintenance purposes on the Danube. This included the inland ladder dredger Csallokoz still in possession of the GD (National Direction of Water service), tonnage 150 tons, horsepower 260 and lying at Budapest, Hungary.

Source
Reports of International Arbitral Awards. Navigation on the Danube, 2 August 1921, volume 1. UN, 2006. 

German Type 143 intelligence collection ship Oker (A53) 1986-

Kiel, Germany 30 April 2016

Germany-flagged, call sign DHRG and homeport Kiel, Germany. Ordered on 3 July 1985. Laid down by Flensburger Schiffsbaugesellschaft, Flensburg, Germany on 15 December 1986, launched on 24 September 1987 and commissioned on 24 November 1988. Part of the Oste-class or 423 classe consisting of the Oker, Alster and Oste. Built using commercial standards. Displacement 3.200 (service)-2.375 (type) ton and as dimensions 75,70 (between perpendiculars)-83,50 x 14,60 x 4,18 metres. Speed 20 knots. Could be fitted out with 2x1-2,7cm Mauser 27 anti aircraft machineguns. Crew numbered 42 men to which 38 technicians were added.