Indonesia Indonesian Navy, Tentara Nasional Indonesia-Angkatan Laut (TNI-AL)

[this is crunch]

lithium were denser than lead-acid so it can store more mean longer range and got smaller packaging/size than lead-acid.
lithium also got better charging time than lead-acid and the price is going down right now considering the transition to electrification and more R&D spend to make lithium better.

Japanese even considering to throw out their sterling AIP and replacing all the batteries with lithium-ion one.

After using lithium, no need for AIP anymore.

so then is it possible to upgrade our current Nagapasa class with Li-on battery? since if im not mistaken one of their problem is with the batteries

 

[Umigami]

so then is it possible to upgrade our current Nagapasa class with Li-on battery? since if im not mistaken one of their problem is with the batteries

I don't think it could be that simple. I don't know...

 

[FlyinMandau]

military_buzz on Instagram: "Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Bagaikan mutiara wajahmu bola (bola) matamu Bagaikan kain sutra lesungnya (lesung) pipimu C

1,170 likes, 470 comments - military_buzz on February 16, 2021: "Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Bagaikan mutiara wajahmu bola (bola) matamu Bagaikan kain sutra lesungnya (lesung) pipimu Cantiknya...

www.instagram.com

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imo, regardless from this "too good to be true" wishlist (16 frigates & 13 sub altogether) these whole list are the exact composition we need to fulfill in 2-4 year (which i doubt will be done right on time) to stop the northern bully from harassing us in Natuna on the upcoming storm. there are some missing part tho such as MPA & AWACS for the airforce, but the rest of the list is quite balanced i guess, not too much or less.

 

[Parry Brima]

Using lithium battery powered submarine could score another point in terms of offset too. We are the biggest nickel producer in the world and have been actively pursuing the goal to be the major hub for EV battery production by inviting some top battery producers (CATL, LG, Tesla, Panasonic, etc) to build the factory here. We should position ourselves as the major provider for lithium battery for the next generation battery powered submarines as well.

 

[FlyinMandau]

military_buzz on Instagram: "Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Bagaikan mutiara wajahmu bola (bola) matamu Bagaikan kain sutra lesungnya (lesung) pipimu C

1,170 likes, 470 comments - military_buzz on February 16, 2021: "Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Terpesona Aku terpesona Memandang (mandang) wajahmu yang manis Bagaikan mutiara wajahmu bola (bola) matamu Bagaikan kain sutra lesungnya (lesung) pipimu Cantiknya...

www.instagram.com

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does anybody know what's this KSSI sub refer to? is it dosan ahnchangso-class?

 

[trishna_amrta]

what is significant improvement using Lithium Ion battery over conventional lead-acid battery?

Denser energy density compare to lead-acid + AIP combo. However, Lithium-ion is a broad term that cover a wide variety of chemical mix.

so then is it possible to upgrade our current Nagapasa class with Li-on battery? since if im not mistaken one of their problem is with the batteries

Not going to happen. It will require an entire new design

 

[Captain Wales]

does anybody know what's this KSSI sub refer to? is it dosan ahnchangso-class?

kssi is chang bogo, kss-ii is type 214, kss-iii is the dosan

 

[FlyinMandau]

kssi is chang bogo, kss-ii is type 214, kss-iii is the dosan

whoa, silly me for realizing that just now. thanks for the insight mate.

 

[Van Kravchenko]

Denser energy density compare to lead-acid + AIP combo. However, Lithium-ion is a broad term that cover a wide variety of chemical mix.

In some literature, Li-ion is claimed to have almost double capability compared to lead acid. Moreover Li-ion also provide quicker charging time, its mean the sub could have more time underwater.


But some question goes to Li-ion + AIP. here some statrment from SAAB.

"...If replacing lead acid, the endurance can be maintained with a smaller battery. Freed up volume can be used for
increased storage of diesel and LOX to increase AIP endurance..."


As for france, perhaps there's small chance to put AIP with Li-ion.

 

[trishna_amrta]

In some literature, Li-ion is claimed to have almost double capability compared to lead acid. Moreover Li-ion also provide quicker charging time, its mean the sub could have more time underwater.

As I had stated earlier the term "Li-ion" is a broad term that cover a wide variety of battery tech. For example the chemical mix in your phone isn't the same as one use in Tesla car, or different chemical mix between brand for the same type / form of cell (example : 18650 cell from Sanyo use different chemical mix than those from Sony) and each type have their pro & cons. I personally prefer cell from Sanyo (or one with similar chemical mix) for laptop or smartphone, however for any camera I prefer those from Sony or Nitecore.

But some question goes to Li-ion + AIP. here some statrment from SAAB.

"...If replacing lead acid, the endurance can be maintained with a smaller battery. Freed up volume can be used for
increased storage of diesel and LOX to increase AIP endurance..."

If a boat already using Li-ion battery there is no longer any point of using any kind of AIP (just waste of space). SAAB most likely only saying it in an attempt to recoup their investment in AIP system, which is no longer relevant with the emerging use of Li-ion battery

 

[Van Kravchenko]

For example the chemical mix in your phone isn't the same as one use in Tesla car, or different chemical mix between

Both of chemical compossition, and material composittion for separator, catode and anode can be different for each type of manufacturer.

As you mentioned before, the battery for mobile devices are almost totally different from the one that use in Tesla motor cars.

From what that i know, the more power output that contain by a battery, the more durable material that use. From what i believe Heat, is the main challenge to achieve high efficiency in electronic stuff

If a boat already using Li-ion battery there is no longer any point of using any kind of AIP

Here a picture with illustration of Scorpene and S BR variant. The last one has additional 5m long hull wich could accomodate either AIP module, logistic accomodation, or battery.

And then here we goes my stupid question, is it practical to install both of AIP and Li-ion battery alltogether into a sub ?

 

[Gary]

Credit to: Lembaga Keris

 

[this is crunch]

Credit to: Lembaga Keris

ah bofors 57mm, the KCR 60m Sampari Class should be using that type right,?

 

[Gary]

ah bofors 57mm, the KCR 60m Sampari Class should be using that type right,?

yup, the more advanced variant, the MK3

 

[Gary]

PASSEX in Arabian Sea.

 

[trishna_amrta]

is it practical to install both of AIP and Li-ion battery alltogether into a sub ?

Practical YES, but does it make sense Definitely NO. Why does anyone want to DOWNGRADE their own boat, when they already have much better solution (Li-ion battery) Replacing li-ion battery space for AIP is basically lowering the overall onboard energy density.

Again as I had stated, those whose offering mix of AIP + Li-ion battery merely want to recoup their R&D investment in AIP

From what that i know, the more power output that contain by a battery, the more durable material that use.

It doesn't need to. It is merely coincidence that more modern materials tend to outperform older material. Example, lithium in raw form doesn't even look like metal at all, not to mention they react with water. In fact all Li-ion cell is inherently unstable. Which is the main reason you shouldn't let any Li-ion cell gone dry, otherwise the electronic circuit that regulate the chemical reaction (as in keeping the cell from exploding) won't have any power

From what i believe Heat, is the main challenge to achieve high efficiency in electronic stuff

Only for computing purpose. For power is less of an issue, unless there isn't any atmosphere for any heat exchange to occur (such as in outer space)

 

[Nilgiri]

Replacing li-ion battery space for AIP is basically lowering the overall onboard energy density.

Yep it boils down to energy density.

The Li-Ion is literally offering AIP at the higher level.

 

[reashot_xigwin]

SPH for the Marine Korp

A self-propelled howitzer for the Marine Corps (image: Konstrukta)

The Marine Corps gets a budget allocation for the purchase of the Self Propelled Howitzer, according to reliable sources. This howitzer will have a caliber of 155mm, which is bigger than the current drag howitzer, namely the LG1 with caliber 105mm and M1938 (M-30) with caliber 122mm. Thus the plan to add LG1 towed howitzer from France for the 2020-2024 period was canceled. The purchase of SP Howitzer also completes the modernization of the Marine defense equipment so that each unit will be mobile. In contrast to the Kostrad Forces which have a requirement for it to be air-transportable in the form of Nexter Caesar self propelled howitzer with a 6x6 wheeled truck base, but the Marine Corps are not limited in size because SP Howitzer transportation would use warships (LPD or LST). Thus, the only size limitation is to fit the gate for LPD and LST ships owned by the Indonesian Navy. Since the budget is for a 155mm howitzer, the caliber must be adjusted accordingly. So far, the Marine Corps has not used heavy tracked wheels, so the choice of the type of truck mounted will be more realistic. The 8x8 wheeled type will provide a wider roaming field than the 6x6 wheeled type. Following the Marine Corps custom of purchasing products from the Eastern Bloc, the following is a selection of truck-mounted SP Howitzer products available that adhere to NATO standards (weight, range of fire with original projectiles, number of projectiles carried, number of crew):

-Kryl 6x6 (23 tons, range 30 km, 18 grains, 5 people) made in Poland, http://www.military-today.com/artillery/kryl.htm

-Bohdana 6x6 (28 tons, range 35-40 km, 20 grains, 5 people) made in Ukraine, https://www.armyrecognition.com/wea...ohdana_155mm_6x6_self-propelled_howitzer.html

-Dana 8x8 (29 tons, reach 39 km, 40 grains, 2 people) made in Czech, http://www.military-today.com/artillery/dana.htm

-Zuzana 2 8x8 (28.5 tons, 39.6 km range, 40 grains, 3 people) made in Slovakia, http://www.military-today.com/artillery/zuzana_2.htm

-EVA 8x8 (28.1 tonnes, 41 km range, 24 grains, 3 people) made in Czech-Slovak, http://www.military-today.com/artillery/eva.htm

-Aleksandar 8x8 (34 tons, range 37.5 km, 24 grains, 3 people) made in Serbia, http://www.military-today.com/artillery/aleksandar.htm

compare with the Nexter Caesar 6x6 currently operated by Kostrad (17.7 tonnes, 42 km range, 18 points, 5 people). http://www.military-today.com/artillery/caesar.htm

It appears that all of these systems have their respective advantages and disadvantages. Considering the number of Marine Corps field artillery battalions is only 3 for 3 PasMars and even then composites with tensile howitzers, the Marine needs will not be much for this type of howitzer. Happy choosing.

 

[Gundala]

there are some missing part tho such as MPA & AWACS for the airforce, but the rest of the list is quite balanced i guess, not too much or less

The existance of AWACS would be great if most of our area already covered with GCI. It would be wise to reach the acceptable number of GCI esixtance then move to EWA. We are lacking on GCI and still have the "opa-opa" knida GCI operating until now.

 

[JATOSINT]

https://twitter.com/i/web/status/1363701628008755200