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 2827 kW (or 2.827 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) 2.827 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 B. SORYU & Oyashio II Program as at February 1, 2018
Anonymous and Pete
PETE COMMENT
The estimated Mechanical output of 2827 kW (or 2.827 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) 2.827 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 or 8? | 220 | 300 | 993 | 794 | 850 |
Oshio + | 1965 | 5 | V8V24/30mMAL [1] | 2 | 16 | 240 | 300 | 993 | 794 | 850 |
1971 | 7 | V8V24/30AMT | 2 | 16 | 240 | 300 | 1544 | 1235 | 850 | |
1980 | 10 | V8V24/30AMT | 2 | 16 | 240 | 300 | 1544 | 1235 | 850 | |
1990 | 7 | 12V25/25S | 2 | 12 | 250 | 250 | 1985 | 1588 | 1200 | |
II | 1998 | 11 | 12V25/25S | 2 | 12 | 250 | 250 | 1985 | 1588 | 1200 |
Mk.1 | 2009 | 11 | 12V25/25SB | 2 | 12 | 250 | 250 | 2280 | 1824 | 1200 |
29SS Soryu Mk.3? | 2024? | - | 12V25/31S [2] [4] | 2 | 12 | 250 | 310 | 2827 | 2261 | 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.
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 | KHI | |||
25SS | 8124 | SS-509 | ¥53.1B FY2013 | LABs + AIP | 22 Oct 2013 | 12 Oct 2016 | Mar? 2018 | MHI |
26SS | 8125 Shoryu | SS-510 | LABs + AIP | 2014 | 6 Nov 2017 | Mar 2019? | KHI | |
27SS First Soryu Mk 2 | 8126 | SS-511 | 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.
---Anonymous and Pete