FS-1500 CLASS

This ship is the FM-51 ARC Almirante Padilla, ARC Isla Tesoro is small ship Dauntless Class used by "Pilot Ship" by the Colombian Navy

Hi rarcand
That could be, I took the name out of AIS,,some of them had it on and also infos in it. But sometimes those AIS are not really on the target. 2-3 miles off is not seldom,, could be for that matter that the name is wrong

I think this ship is ATR Almirante Padilla, a sister of the Antioquio that was also posted recently.