The ADA class is fine for what it was designed to do - ASW.
With tri-barrel torpedo launchers and a Ship Self Defense System for torpedo countermeasures - this being Sea Sentor.
Hanger facilities for S-70 ASW helicopters.
And a powerful, but well optimized for littoral waters, sonar.
These ships, the ADA class, excel at what they were designed to do - hunt submarines. They don't excel at land-attack or air-defense because that's not their intended role.
They aren't major surface combatants, they aren't multi-role destroyers or cruisers, and thus they only need to be able to do their designed role and do it well. The RAM? Perfectly fine for a ship like the ADA.
In fact, we see this setup repeated in other navies such as the USN with their (albeit maligned) Freedom and Independence class LCS.
There's no VLS on this ship, no VLS on any Freedom class corvette. Just the RAM for air-defense, a gun for self-defense against surface vessels, AShMs, and a SH-60 for ASW and ASuW. They are similar in their role to ADA.
And unlike the LCS, which even as a frigate wont have a credible air-defense capability. Future MILGEM project classes will as the corvette design of the ADA is enlarged to become a frigate and then a destroyer.
Across the world, we see that corvettes are largely the same. ASW or littoral patrol ships with secondary AShM or land-attack and very limited air-defense roles.
Visby of Sweden doesn't even have an air-defense weapon!!! Not even RAM! But it's a stellar ASW ship.
Same with India's Kamorta Class corvettes, though unlike Visby and like ADA, they have a close-in weapon system - the AK-630.
Looking around the world at corvette designs, ADA is typical for that class of ship.
For what they were designed to be, ASW corvettes with a secondary AShM capability, the ADA gives good quality for their size and cost.
This.
Within the scope of their intended role, ASW and a secondary ASuW, they are credible, and in the scheme of the world's corvette designs, largely typical for that class.
It shouldn't come as a surprise to anyone that they aren't outfitted with land-attack missiles or anything beyond point-defense air-defense weapons. These aren't the ships intended roles.
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For a navy the size of the USN, I don't like corvette-type ships like the LCS. They don't fit into the operational doctrine too well. Full-size frigates would be better.
But for the Turkish navy which is more limited in size and more limited geographically with a minimal expeditionary role and a major focus on regional defense, corvettes make sense as their more cost effective - at the expense of capability as swing or multi-role platforms.
There's nothing wrong with the ships. Not have a land-attack capability or VLS is normal for corvettes. Once you start to think about adding those, you're getting into frigate territory.