On ships like the Dalhi, the AK-630 CIWS gun is guided by the MR-123 Vympel fire-control radar, mounted elsewhere on the ship.
A typical AK-630 CIWS gun is said to have an ammo magazine of 2,000 rounds. Since the gun is 30mm and the turret is kinda small, the ammo is most likely stored below deck.
So just because the AK-630 looks "small" doesn't mean it's easier to install than the Phalanx. Let's look at what they say about Goalkeeper CIWS vs. Phalanx CIWS:
Comparison to Phalanx
The Phalanx CIWS system is another system that is widely used in the same role, there are several key differences between the two systems:
* Goalkeepers projectiles are much larger (30 mm versus 20 mm) and have greater Kinetic energy.
* Goalkeeper is twice as expensive as the Phalanx.
* Phalanx can be welded to any section of deck and plugged in, while Goalkeeper requires significant 'deck penetration' and integration.
* Phalanx can only track and engage one target at a time, while Goalkeeper can track 18 targets and switch to engage the greatest threat.
* Both weapons have similar maximum ranges, however Goalkeepers kill distance is reportedly a slightly further (500 to 350 meters compared to 300 meters for the Phalanx).
* Phalanx ammo drum is mounted directly on the gun, the Goalkeeper is reloaded from below deck.