Japanese battleship Yamato design A0-140 dated 10 March 1935

Nagato-class. ©Warshipsresearch.blogspot.com

No. 13-class. ©Warshipsresearch.blogspot.com

Yamato-class. ©Warshipsresearch.blogspot.com. Revised sketch Cincpac-Cingpoa 26 October 1944

Part of the Yamato-class preceded by the realized Nagato-class and planned Number 13-class and to be succeeded by the planned A-150 class, consisted of 4 ships. Yamato ordered in March 1937, laid down by Kure Naval Arsenal on 4 November 1937, launched on 8 August 1940, commissioned on 16 December 1941, sunk in an American air attack during Operation Ten-Go on 7 April 1945 and stricken on 31 August 1945. The Yamato was underway to attack Allied forces on and around Okinawa.

Displacement trials 68,402 (69,500) tons) and as dimensions 964.57 (waterline) x 135.17 (maximum) x 34.12 feet or 294 x 41.2 x 10.4 metres. Armament consisted of 3x3-18.1”/46cm cal 45 guns, 4x3-6.1”/15.5cm cal 60 guns, 6x2-5”/12.7cm cal 40 guns and 12x2-1”/25.cm guns. Armor consisted of gunstandard 17,1”/46.0cm, immunity zone 21,872 yards/20 kilometres (inner limit)-32,808 yards/30 kilometres (outer limit). Turbine propulsion totaal horsepower 197,264 shp/200,000 mhp. Maximum speed 31 knots. Endurance 8,000 nautical miles/18 knots.

Sources

Evans, David C.; Peattie, Mark R. Kaigun: Strategy, Tactics, and Technology in the Imperial Japanese Navy, 1887–1941.

Garzke jr., Wiliam H. and Robert O. Dulin jr. Battleships. Axis and Neutral Battleships in World War II.

Hansgeorg Jentschura, Dieter Jung and Peter Mickel. Warships of the Imperial Japanese Navt 1869-1945.

Lengerer Hans. “The Japanese Supership Strategy” in: Warship Volume VII, nrs. 25-27.

United States Pacific Fleet and Pacific Ocean Areas. Weekly Intelligence. Vo; 1 No. 22 8 December 1944.

Watts, A.J. &B.G. Gordon. The Imperial Japanese Navy. 

WebsiteMaritime Museum Kure.

Website Hiraga Archive.

Warshipsresearch.blogspot.com

American aircraft destroying or damaging large number of Japanese ships and aircraft on Okinaway since 1 April 1945

An item reported since the operations on Okinawa, Ryukuy Islands, Japan begun American aircraft sunk 150 Japanese ships with totally 145,000 tons, damaged another 194 ships with totally 138,888 tons and damaged or destroyed 70 Japanese aircraft.(1)

Note

1. Operation Iceberg or the Battle of Okinawa was between 1 April-22 June 1945.

Source

The National Archives, Kew Gardens, England CAB-66-67-28 Weekly Résumé (No. 306) of the naval, military and air situation from 0700 5th July to 0700 12th July 1945. 

Japanese cruiser submarine I-44 1942-1945

©Warshipsresearch.blogspot.com

ProjectS37B. Cruiser submarine Type-B Modified 1-class or I-40 class/Otsu-gata Kai-1, preceded by Junsen Type A succeeded by Junsen Type B. Built under the Maru Kyu Programma as No. 374. Laid down by Yokosuka Naval Arsenal on 11 June 1942, launched on 5 March 1943, completed on 31 January 1944, converted into a Kaiten mother ships on 22 October 1944 and sunk by a plane of the American Casablanca-class escort carrier USS Tulagi south east of Okinawa, Japan on 29 April 1945. 

American submarines shelling Japanese positions on Toroshima Island and Kujukurihama in August 1945

An item reported that American submarines shelled Toroshima Island part of the Okinawa Group and Kujukurihama south east of Tokyo, Japan. Further more was of an escorted convoy in the Sea of Japan a cargo ship sunk and other ships damaged.

Source

The National Archives, Kew Gardens, England CAB-129-1-20. Weekly Résumé (No. 311) of the naval, military and air situation from 0700 9th August to 0700 16th August 1945. 

Japanese destroyer Numakaze 1921-1944

Minekaze-class. Warshipsresearch.blogpost.com

Wakatake-class. Warshipsresearch.blogspot.com

Part of Minekaze-class Nokaze sub-class prededed by Momi-class succeeded by Wakatake-class, built under the 8-4 Fleet Program. Totally 15 built. Ordered under 1918 Fiscal Year. Laid down by Maizuru Naval Arsenal on 10 August 1921, launched on 25 February 1922, commissioned on 24 July 1922, torpedoed and sunk by the American submarine USS Grayback east-northeast of Naha, Okinawa at position 26°29′ North 128°26′ East on 18 December 1943 and stricken on 5 February 1944.

Japanese passenger-cargo ship Toyama Maru 1913-1944

Call sign JTXD. Laid down by by Mitsubishi Dockyard&Engineering Works, Nagasaki on 4 August 1913, launched on 20 March 1915, delivered on 3 June 1915, requsitioned on 29 January 1941 and torpedoed and sunk by the American submarine USS Sturgeon (SS-187) underway to Okinawa serving as a troop transport on 29 June 1944. Gross tonnage 7,090 tons, under deck 6,574 tons, net tonnage 4,386 tons and dimensions 445.0 x 58.0 x 34.0 x 9 (light)-27 (loaded) feet. 922 Nhp Steam turbine. Fitted out for deep tanks for carrying oil in bulk. 

Japanese cargo steam ship (ex-War Wallaby 1920-1924, Shuntai Maru 1924-1938) Syuntai Maru 1938-1944

Call sign JOBB. Built by Canadian Allis-Chalmers Ltd., Bridgeburg, Ontario, Canada in August 1902. Sunk north of Okinawa by the American submarine Tambor (SS-198) on 29 January 1944. Gross tonnage 2,253 tons, under deck 1,857 tons, net tonnage 1,325 tons and as dimensions 252.0 x 43.6 x 20.5 7 (light)-20 (loaded) feet. Reciprocating propulsion, 274 nhp, coal bunker capacity 224 tons, range 1,800 nautical miles/8 knots and speed 8 (normal cruising)-11 (maximum) knots. Lake type.