AIP & LIBs difference on Japanese Submarines - Table

Following an article of February 28, 2019 Anonymous provided the comments below:

Currently, Japan [J] has three kinds of submarine, Oyashios (non-AIP, with Lead-acid Batteries (LABs)), Soryu MkI (Stirling AIP, with LABs) and is building Soryu MkII (non-AIP, with Lithium-ion Batteries (LIBs)) (see Table below). The operational period of J-submarines are as long as 70 days, mainly limited by amount of food [1].

A Soryu MkI's AIP use will end once the LOx is used up. But in a Soryu MkII (with LIBs) there is no such limitation and the underwater mission is carried out after recharge of LIBs in quiet sea area [2]. The operation of an AIP Soryu MkI suffers due to huge 100 (?) ton LOx tank it has to carry for AIP. In contrast the lack of a LOx tank on a LIBs Soryu MkII provides more space for crew accommodation making MkII's more suitable for the mixed male/female crewing that Japan is introducing.

[Comments on SAAB-Damen and ASC-Collins will be published separately on March 15, 2019.] 

[1] The range of J-submarines (maybe 6,000nm) is considerably shorter than the Australian Collins-class (around 10,000nm with longer transit legs within same operational period of 70 days). Presumably, J-subamarines sit, monitoring, on the seafloor for long periods. Hence less mobile J-subs do not need extra fuel.

[2] Information from retired submarine Admiral, Masao Kobayashi.

TABLE.  Japanese Soryu and Oyashio Programs as at November 7, 2019 

SS No. Diesel Type Motor	Build No Name	Pennant No.	MoF approved amount ¥ Billions FY	LABs, LIBs, AIP	Laid Down	Laun -ched	Commi ssioned	Built By
5SS Oyashio 2 Toshiba motors	8105 Oyashio	SS-590/ TS3608	¥52.2B FY1993	LABs only	Jan 1994	Oct 1996	Mar 1998	KHI
6SS-15SS Oyashios  10 subs 2 Toshiba motors SMC-7?	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 I 12V25/25SB SMC-8	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	12 Mar 2018	MHI
26SS end of SMC-8s	8125 Shoryū	SS-510	¥51.7B FY2014	LABs + AIP	2014	6 Nov 2017	18 Mar 2019	KHI
27SS First Soryu Mk II 12V25/25SB  diesel first SMC-8B motor	8126 Oryū	SS-511	¥64.4B FY2015	LIBs only (NCA type)	2015	4 Oct 2018	Mar 2020?	MHI
28SS  Second Soryu Mk II 12V25/25SB SMC-8B	8127 Toryu	SS-512	¥63.6B FY2016 around $496 million	LIBs only (NCA type)	Jan 2017	6 Nov 2019	Mar 2021?	KHI
29SS First Soryu Mk III 12V25/31S SMC-9?	8128	?	¥76B FY2017	LIBs only?	?	?	2022?	MHI?
30SS Second Soryu Mk III 12V25/31S	8029	SS-514	¥71.5B or ¥69.7B? FY2018	LIBs only?	Jan 2019?	2021?	Mar 2023?	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. Numbers before "SS" refer to "Heisei" the year of the reign of Japan's previous Emperor Akihito who abdicated on 30 April 2019. Hence "30SS" refers to the last year (the 30th year) of Akihito's reign. The next year will likely be "1SS" and will likely be called a new submarine class name (ie. not "Soryu").  

---

Thankyou Anonymous (further translation by Pete).