Just received May 25, 2017
Precise details of yet to be deployed submarine batteries are usually tightly held secrets. But it appears Chinese websites have already published the following details.
Below may be:
- the first pictures of Lead-acid (LABs) and Lithium-ion Batteries (LIBs) for Japanese submarines,
The pictures and graph are in the original Japanese at
http://www.mod.go.jp/j/approach/hyouka/seisaku/results/18/jigo/sankou/jigo05_sankou.pdf
It was too difficult for Submarine Matters to cut, paste, put on website and fully translate the whole document.
However I converted PDF into WORD. This allowing part Japanese character translation using https://translate.google.com.au/?hl=en.
LIBs
On the document, the Battery in center of picture, is probably an image of the Japanese Navy's (JMSDF's) new Lithium-ion Battery (LIB) which weighs 770 kg, with dimensions 444mm x 431mm x 1647mm.
These LIBs will be used on 27SS the first Soryu Mk 2 see the Oyashio-SORYU Table. 27SS, being built at MHI, might be launched this year (2017) and may be commissioned in March 2020. The longer than usual trial-commissioning period is for testing such new battery technology.
- on left of battery document in blue are the LIB battery management system components.
------------------------------------------------------------------------
![]()
A historical LIB Battery development graph (in Japanese)is included below the pictures.
----------------------------------------------------------------------------------------------
Separately Howies Marine has produced this interesting Youtube (below) of Japan's changeover from LABs + AIP to LIBs. The Youtube also broaches the subject of the US returning to a part diesel-electric (SSK) submarine service.
The big risk for Japan might be that even if the US re-introduced some SSKs (using LIBs) into the US Navy the US would return to building its own SSKs (not rely on Japan). The US might even sell SSKs in competition against existing SSK builders.
Pete
Precise details of yet to be deployed submarine batteries are usually tightly held secrets. But it appears Chinese websites have already published the following details.
Below may be:
- the first pictures of Lead-acid (LABs) and Lithium-ion Batteries (LIBs) for Japanese submarines,
The pictures and graph are in the original Japanese at
http://www.mod.go.jp/j/approach/hyouka/seisaku/results/18/jigo/sankou/jigo05_sankou.pdf
It was too difficult for Submarine Matters to cut, paste, put on website and fully translate the whole document.
However I converted PDF into WORD. This allowing part Japanese character translation using https://translate.google.com.au/?hl=en.
LIBs
On the document, the Battery in center of picture, is probably an image of the Japanese Navy's (JMSDF's) new Lithium-ion Battery (LIB) which weighs 770 kg, with dimensions 444mm x 431mm x 1647mm.
These LIBs will be used on 27SS the first Soryu Mk 2 see the Oyashio-SORYU Table. 27SS, being built at MHI, might be launched this year (2017) and may be commissioned in March 2020. The longer than usual trial-commissioning period is for testing such new battery technology.
- on left of battery document in blue are the LIB battery management system components.
------------------------------------------------------------------------
LABs
I was able to retrieve an image of the above LAB battery (in document it is on the right). This is most probably installed in all current Japanese submarines. This battery weighs 880 kg.
Dimensions are 444mm x 432mm x 1665mm
----------------------------------------------------------------------------------------------
Separately Howies Marine has produced this interesting Youtube (below) of Japan's changeover from LABs + AIP to LIBs. The Youtube also broaches the subject of the US returning to a part diesel-electric (SSK) submarine service.
Pete