On Shipyards and CIWS
Well it seems you somehow debating the quality of Damen Schelde vs Fincantieri,. In my oppinion those two are highly regard and experience ship builder, and I don't have strong arguments on which of those two are the best.
I don't know how the problem of the four Damen build Sigma Corvetes now in TNI AL inventories, however do remember TNI AL is the first customers of SIGMA, and Diponegoro was the first SIGMA ever build.
I think building some new design do have problem that need to sort out. However TNI AL now claim all four Sigma in full readiness..
True. No doubt that both shipyards are highly regard and experience shipbuilders. I was just looking at the present result, of the present ship. A new design has ALWAYS problems, true. But if the quality of the steel is very poor (or if it is too thin), it means that the shipbuilder has thought only to save money, regardless of quality, regardless of international standards. This is not "a problem". If the axis bends during operation, it is a big fault in design. It is not "a problem". All Sigma in full readiness? What are they doing in PAL?
On why the 3rd & 4th Sigma Corvetes eventually still build on Damen shipyard and not in PAL, again based on several communicates from sources in here I'm specualting 2 thing:
1. PAL was not ready yet at that time,
2. TNI AL wants to have those 4 corvetes ASAP (remember Damen manage to finish those 4 Corvetes in 6 years, quite fast for new design building).
I would add point 3: Damen ha NEVER wanted to build ships in Surabaya, because they do NOT trust PAL, its quality, its capability to carry out the work. And in fact, while Fincantieri has always supported the idea of the "Korvet Nasional", since 2004, Damen has proposed, for PKR, a ship entirely built in Holland. Only in the last few months, they started playing dirty, claiming to build the ship "with" PAL, but with the idea of leaving them the local construction of bow and stern, while building the central part and the superstructure (that is 70% of the ship) in Holland (of course with PAL Engineers assisting to the comedy!). Maybe now they accepted to do all in Surabaya. Wait and see. Regarding the support given to PAL, Fincantieri proposed to develop the design together with PAL, with two advantages:
1. PAL develops design capabilities, not jut construction.
2. property of design would have been common.
For Damen, the design exists already. OK, the Dutch shall "concede" the licence, but the difference is not so little. And what about design capabilities?
Coming to CIWS, the specs were requesting a Goalkeeper-like CIWS, working on the principle of firing as many bullets as possible against incoming missile at short range, hoping to make it explode. Here there are two problems:
1. With 20 or 30 mm rounds, you can counter a target at distances below 1,000 m. And, with supersonic missiles, even if you have a fully automatic reaction (which is the core characteristic of any CIWS), you may think to have impact at 500 m from the ship, when it is really too late. In fact, systems like Goalkeeper, or Phalanx, were conceived in the late Seventies of last century, more than 30 years ago. And, in fact, it looks that Thales is pushing the system out of production.
The Dutch did not propose any solution as CIWS. Apparently, so did the Italians. As a matter of fact, the Italians proposed a very interesting solution: the same Fire Control System selected by the Italian and French Navies on board their new Destroyers Horizon Class (today at sea) and FREMM Class (presently under construction). What makes the difference? The Italian FCS has a fully automatic reaction, like a CIWS and, associated to the 76 gun (like on Horizon and FREMM), can engage with a very short reaction time, any incoming missile at medium distance, starting to counter it a 8 km (not 800 m!) from the ship, thus assuring a safe period in which to destroy missile. Of course the Dutch also proposed their FCS associated to 76 gun. But no feature of fully automatic reaction, and so engagement of the incoming missile can start at 2 km only. The difference is not so small...