According to Wikipedia, the armament of this 3500 ton ship consists of a 57mm gun, two .50 BMGs, torpedos, and RIM surface to air missiles.
Unless the Wiki article missed something, this doesn't sound like much punch for a 3500 metric ton warship.
It's not, but it is enough to chase pirates, patrol sea lanes, deliver specwar, and generally show the flag. In a perfect world I would want a ship that carried lotsa Harpoons and served up missiles for an Aegis DDg to control, but ohwell.
Stuff like this happens all the time, poorly trained sailors supervised poorly. You figure you get a new guy and you want him to obtain 2,000 or so line item signatures in his first 6 months on various training items. The chain of command doesn't particularly care about quality of training unless someone f's up. They care about telling their dept. head why Seaman Shmuckatelli is on the delinquent list. So you get sailors who are qualified on paper but not competent.
My last active duty ship had a engineering roving watch sign off on a bunch of checks during the watch. come to think of it it was most likely a lot of watches that signed off everything was a-ok. Problem was a main shaft bearing was 19 quarts low. Ooops. Put inch deep grooves in the main shaft of a 2 screw ship while we were deployed. Buddy of mine set up the rig to turn it in place after it was repaired. Or the time the emergency diesel came up with salt water in the lube oil, or the time....
