gCaptain has a video up here with commentary.
Seems like an older video that first appeared on YouTube in 2012.
Really not much of mystery - looks like prospective pirates misidentified a potential target and took on the wrong ship. Some of them seemed to have paid a severe price for their error.
Here is the YouTube version:
Don't know the ship, but this is a video shot at night, looks like IR. Camera looks like it might be on an aircraft or perhaps on a ship some distance from the events depicted. It also appears the putative "pirates" fired first.
gCaptain get credit for the Tico class cruiser ID. Doesn't appear the cruiser was going very fast, so it may have been trolling for just such an attack.