PKR 10514 (Sigma light frigate/heavy corvette ) project is actually the same project or the continuation of the long overdue plan of National corvette. At the beginning, we want to build en masse Sigma 9113 (91m corvette) as the backbone of the navy,. But after the completion of 4 Sigma 9113 units and evaluating thoroughly their performance, Navy change the plan, arguing they need more firepower so they refine the plan and that is how PKR 10514 born.
So in my opinion, Navy will stick their choice to Sigma 10514 for 105m warship. They will build this type as much as they see fit to modernize corvette/light frigate fleet that currently in service within Indonesian Navy, which is quite many.
As for 150m warship, this is already planned and coordination already made within various institution to realize this plan. I hope they stick to it and strive to realize this goal. This is a long time goal, if we stick to the plan and bring the right industrial expertise (Damen,etc), we can get this warship around 2020.
2020 is so optimitic, 4 years is only for building the 1st ship , plus design will take 4-5 years at least. Such large platforms are not fully operatable when they are in the service,it also takes about 3-5 years to make them full operating . I think 2025 is more optimistic.
To have it in 2020,you should begin to build that ship next year ,if we consider PTPAL is this busy with sigma,and modernizations ,that is not possible. Also i said before,its not only about designing the hull, electronic systems will be integrated, a phased array radar will be designed and integrated. ( with an indigenous PAR , this 150 meter ship makes no sense)
so we can simply say 2025 ,with the best plan.
Let me explain the steps and flow chart of designing a ship, as 1st experience;
1stly, rumours appear, president makes decision , this is delivered to universities.
2nd university makes research, also contacts to other sub contractor for electronics and radar
3rd university delivers the research report to responsible institution , they begin to concept design in lights of report, together with university.
4th design is offered to military , military makes feed back, go to step 3rd.
5th military accepts , design now considered as serious and major design begins,
6th PTPAL handles the construction design , while sub controctors are still in cooperation with PTPAL ,simultaneously to this a major company handles about weapoon systems , and electronics.
7th , ships final design is completed begin to construct.
8th struggle begin to integrate national systems, with the best option ship will go into tests. Performance of ship will be evaluated by military , feedbacks are taken.
@Indos, why PTPAL is only option for naval construction . Isnt there any consideration to make a private company able to build corvette and frigate.?
Yup, we have two major state owned company in electronic warfare and two private owned company that has specialty on that area, for Naval warfare it is Infra RCS
Indonesia's company signs export of frigate-used software | Republika Online
REPUBLIKA.CO.ID, BANDUNG - PT Len Industri (Persero), an Indonesian electronic instrument-producing company, has signed a contract for export of software used on warship missile destroyers or frigates for the second time in cooperation with multinational company Thales Netherlands. Currently, Len is the only company in Indonesia that has managed to make a CMS and has installed it in three warships.
The second contract contains the development of STING EO tracker software, MASS Decoy Launcher, and VL-MICA SAM.
Persero means state owned company
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As far as radar and electronic warfare development there are PT LEN/ PT INTI (state owned) and PT Infra RCS (producing LPI radar for several Indonesian warships, including Van Speijk Class frigates), and also there is R&D department in our Armed Force that has able to make Naval ESM system.
So when these all companies be together and equip a ship with local systems? Before going to a locally build ship,these systems should be integrated together in existing, or some newly building ship ( such as sigma) ,the old corvette you have shown is good option as well. Still there is doubt if netherland will let for this.