Table of Kawasaki-MAN and wholly Kawasaki Marine Diesel Characteristics

Anonymous in Table A. has kindly submarized some characteristics of diesel engines in Japanese submarine classes since 1960. Anonymous concludes that the current 12V25/25S (of the Oyashio II and Soryu classes) represent a major improvement of power output. 

PETE COMMENT

The estimated Mechanical output of 3100 kW (or 3.100 MW) for the 12V25/31S in the future 29SS (which can be called Soryu Mk. 3 see Table B.) represents an even larger improvement. 

Note [1] (below) that these early diesels were built by KAWASAKI under licence from MAN, while [2] diesels since 1990 have been KAWASAKI's design and licence. 

For Australia's Future Submarine a broader and continuing KAWASAKI-MAN relationship, may allow Naval Group access via MAN to the Soryu's high power 2.280 MW 12V25/25SB or the Soryu Mk.3's (estimated) 3.100 MW 12V25/31S. 

KAWASAKI-MAN's relationship can be seen here: "Kawasaki’s manufacture of marine diesel engines began with a licensing agreement with Germany’s MAN in 1911. Following the merger of MAN and Denmark’s B&W in 1981, Kawasaki renewed the agreement and began producing Kawasaki-MAN B&W 2-stroke diesel engines. [By 2006 Kawasaki] delivered enough MAN B&W engines to output over 10 million horsepower."

Also in 2006 "Completed the Kawasaki-MAN B&W 12K98ME, an electronically controlled marine diesel engine (93, 360 PS)."

Table A. List of Diesel Characteristics for Japanese submarine since 1960

Class (from Wiki)	First commiss-ioned	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
Oyashio I	1960	1	V8V22/30mAL [1]	2	16	220	300	993	794	850
Oshio + Asashio	1965	5	V8V24/30mMAL [1]	2	16	240	300	993	794	850
Uzushio	1971	7	V8V24/30AMT [1]	2	16	240	300	1544	1235	850
Yushio	1980	10	V8V24/30AMT [1]	2	16	240	300	1544	1235	850
Harushio	1990	7	12V25/25S [2]	2	12	250	250	1985	1588	1200
Oyashio II	1998	11	12V25/25S [2]	2	12	250	250	1985	1588	1200
Soryu  Mk.1	2009	11	12V25/25SB [2]	2	12	250	250	2280	1824	1200
29SS Soryu Mk.3?	2024?	-	12V25/31S [2] [4]	2	12	250	310	3100	2500	1200

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

       and V8V24/30AMT

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

[3]  Electrical output = mechanical output x the 0.8 power factor

[4]  Estimated values.

TABLE B. SORYU & Oyashio II Program as at February 1, 2018 

SS No.	Build No Name	Pennant No.	MoF approved amount ¥ Billions FY	LABs, LIBs, AIP	Laid Down	Laun -ched	Commi ssioned	Built By
5SS Oyashio	8105 Oyashio	SS-590/ TS3608	¥52.2B FY1993	LABs only	Jan 1994	Oct 1996	Mar 1998	KHI
6SS-15SS Oyashios 10 subs	8106 -8115 various	SS-591-600	¥52.2B per sub FY1994-FY2003	LABs only	15SS Feb 2004	15SS Nov 2006	15SS Mar 2008	MHI & KHI
16SS Soryu Mk 1	8116 Sōryū	SS-501	¥60B FY2004	LABs + AIP	Mar 2005	Dec 2007	Mar 2009	MHI
17SS	8117 Unryū	SS-502	¥58.7B FY2005	LABs + AIP	Mar 2006	Oct 2008	Mar 2010	KHI
18SS	8118 Hakuryū	SS-503	¥56.2 FY2006	LABs + AIP	Feb 2007	Oct 2009	Mar 2011	MHI
19SS	8119 Kenryū	SS-504	¥53B FY2007	LABs + AIP	Mar 2008	Nov 2010	Mar 2012	KHI
20SS	8120 Zuiryū	SS-505	¥51B FY2008	LABs + AIP	Mar 2009	Oct 2011	Mar 2013	MHI
No 21SS			No 21SS built
22SS	8121 Kokuryū	SS-506	¥52.8B FY2010	LABs + AIP	Jan 2011	Oct 2013	Mar 2015	KHI
23SS	8122 Jinryu	SS-507	¥54.6B FY2011	LABs + AIP	Feb 2012	Oct 2014	7 Mar 2016	MHI
24SS	8123 Sekiryū	SS-508	¥54.7B FY2012	LABs + AIP	15 Mar 2013	2 Nov 2015	13 Mar 2017	KHI
25SS	8124 Seiryū	SS-509	¥53.1B FY2013	LABs + AIP	22 Oct 2013	12 Oct   2016	Mar? 2018	MHI
26SS	8125 Shoryu	SS-510	¥51.7B FY2014	LABs + AIP	2014	6 Nov 2017	Mar 2019?	KHI
27SS First Soryu Mk 2	8126	SS-511	¥64.4B FY2015	LIBs only	2015	2018?	Mar 2020	MHI
28SS  Second Soryu Mark 2	8127	SS-512	¥63.6B FY2016	LIBs only	2016?	2018?	Mar 2021?	KHI
29SS First Soryu Mk 3 (1) (3)	8128	?	¥76B FY2017	LIBs only	?	?	2023?	MHI?
30SS Second Soryu Mk 3 (2)	8029?	?	¥71.5B FY2018	LIBs only	?	?	2024?	KHI?

Table from information exclusively provided to Submarine Matters. LABs = lead-acid batteries, AIP = air independent propulsion, LIBs = lithium-ion batteries. ¥***B = Billion Yen. MHI = Mitsubishi Heavy Industries, KHI = Kawasaki Shipbuilding Corporation of Kawasaki Heavy Industries.

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Anonymous and Pete