No Norwegian Boat for Pakistan.
Right, but then Solomon simply missed the point. He wrote pirate speedboats can outrun a FAC - true and not true depending on the type - I provided a counterpoint. It's not a non-overlapping bell curve. There are FACs that can outrun and out endurance speedboats and speedboats that can outrun FACs.
Do you know what USNAVY use against Pirates?
Destroyers mostly. Looking at the vessels participating in Operation Ocean Shield (Ocean Shield is not the only counter-piracy operation the USGC or USN are involved in) off the coast of Africa, it's mostly frigates and destroyers... but there are exceptions too.
Two INS Car Nicobar-class FACs are also participating in counter-piracy efforts in the region.
From an armament perspective they're a bit of an oddity among FACs, being armed with guns and torpedoes, but not all FACs are armed with missiles.
In terms of near-US counter-piracy (though the USCG is deployed globally as well) the USCG uses cutters, some of which (Hamilton, Legend) are the size of frigates.
In terms of FAC-type ships, the USN used the Cyclone class and the USCG has the Fast Response Cutter.
The USN also provides counter-piracy and counter-smuggling support near Central and South America, so again, destroyers and carriers are on hand.
The US doesn't really operate true FACs anymore since they don't really fit into their doctrine of overseas deployment and the US doesn't have too many concerns close to home, enjoying a massive qualitative and quantitative edge in its neighborhood. The Pegasus Class were the last true FACs of the USN, but they continue to operate ships that are similar in function in the FRC and Cyclone classes.
Japan's Hayabusa is used to protect their waterways and shipping lanes, so it's not as if there's no precedent for FACs being used in such a manner. Our Skjold does the same.
Pakistan is not the US and should not be compared with the US. They have different doctrines, missions and situations that mandate different assets and usage. FACs are fine for securing regional and territorial waters and have been used in such roles. Counter-piracy too, as noted with India's involvement in Operation Ocean Shield.
FACs often overlap with patrol ships and corvettes in terms of size and role.