Revised Table of KHI-MAN Diesels for Japanese Submarines

Anonymous has revised Table A, originally published as Submarine Matters article of February 1, 2018. The revised (now the correct) data is in Yellow with data sources [5] and [6] by experts. ( ) is based on [5], other data are based on [6].

Revised Table A (ver 3) 

Class	First completion year	No. of vessels	Model [1] or [2]	No. of diesels	No. of cylinders	Bore mm	Stroke mm	Mechanical  ouput kW	Electrical outpout   kW [3]	Speed rpm
Oyasho	1960	1	V8V22/30mAL  [1]	2	16	220	300	993 (993)	794 (794)	850
Oshio	1964	5	V8V24/30mMAL [1]	2	16	240	300	993 (1066)	794 (853)	850
Uzushio	1970	7	V8V24/30AMT [1]	2	16	240	300	1544 (1287)	1235 (1030)	850
Yushio	1970	10	V8V24/30AMT [1]	2	16	240	300	1544 (1545)	1235 (1236)	850
Harushio	1990	7	12V25/25S [2]	2	12	250	250	1985 (2280)	1588 (1824)	1200
Oyashio	1998	11	12V25/25S [2]	2	12	250	250	1985 (2500)	1588 (2000)	1200
Soryu MK I & II [7]	2009	11	12V25/25SB [2]	2	12	250	250	(2500)	(2000)	1200
29SS	-	-	12V25/31S [2] [4]	2	12	250	310	3100	2500	1200

[1] KAWASAKI (under the license of MAN): V8V22/30mAL, V8V24/30mMAL, V8V24/30AMT

[2] KAWASAKI: 12V25/25S, 12V25/25SB, 12V25/31S

[3] Electrical output = mechanical output x 0.8

[4] Estimated values:

[5] “Historical Development of Four Stroke Diesel Engine” by Kazuya Sato, Center of the History of Japanese Industrial Technology, National Museum of Nature and Science.

This is comprehensive review and is reviewed by representative diesel manufacturers in Japan (KHI, MHI, MAN-Japan, JFE, Mitsui, etc) reviewed this article. [Pete comment the Japanese version is at http://sts.kahaku.go.jp/diversity/document/system/pdf/044.pdf [PDF, about 15MB] with an Abstract in English. It has a "Table 3.4.14 Main subject of submarine" covering the years 1960-1997 on page 35. As the document is dated March 2008 it predated public details of the Soryu-class.] 

[6] “History of Japanese submarine after WWII” by Rear Admiral and ex-commander, Dr. Yoichi Hirama republished on Submarine Matters with edits as Updated History and Photos of Japanese Submarines After WWII of January 17, 2015.

[7] Based on those of 12V25/25S for Oyashio [6].

The relationship between KHI and MAN Diesel & Turbo is very healthy.

Anonymous located the following KHI Media Release “100th anniversary of technology partnership on diesel engines with MAN” dated October 24, 2011 (originally in Japanese,) published at http://www.khi.co.jp/machinery/news/detail/111024.html and further translated by Pete:

Kawasaki Heavy Industries (KHI) commemorates the 100th anniversary of 1911, the year it entered into technical cooperation relationship with Germany's M.A.N. company (currently, MAN Diesel & Turbo) concerning diesel engines. This is the longest historical relationship among companies currently licensed with MAN Diesel & Turbo.

In 1911, when the first contract was signed, the steam engine was still in use for the propulsion of merchant ships and the diesel engine had not been introduced. KHI’s first president, Kojiro Matsukata [bio takes 30 seconds to download], signed a technical agreement with M.A.N. regarding diesels submarine use. Though the relationship was temporarily interrupted by the two world wars, we have revived the relationship each time and it continues up until the present day.

At the beginning of the contract, we intended the diesel engine for submarine use, but then extended the use to main propulsion engines for merchant ships, auxiliary power generation agencies, onshore power generation agencies, and power engines for diesel locomotives, etc.

Since 1980, we also manufacture turbochargers under the license of MAN. We provide various products of MAN Diesel & Turbo including 2 stroke diesels, 4 stroke diesels and turbo chargers.

KHI will continue to manufacture reliable, highly efficient and environmentally friendly diesel engines and turbochargers assisted by the strong relationship with MAN Diesel & Turbo.

Anonymous and Pete