would it not make more sense to build karel doorman (M class) frigates instead of the T23? at the very least, it would be close to stupid to have 2 goalkeepers on the T23, bloody expensive even for a richer hellas. the issue would be especially troubling when you keep the british weapon systems on board, giving your nation a mix of systems that are completely incompatible.
where on the S class modernisation would the twin goalkeeper be placed? I am not certain it fits. I would expect a switch of the aft gun for a goalkeeper and the installation of an SMART-S instead of the WM egg (this was actually proposed for the UAE ships)
for the L modernisation: I actually doubt you can fit Mk 48 on board in the L class. if you can, you must do so forward and an goalkeeper forward will be out of the question. if you replace the Mk 29 and the missile storage there with an goalkeeper, this is an maybe. the L frigates were somewhat tight ships, so addition of equipment is impossible (only replacement)
having 3 types of missiles in the Mk 13 and 2 more on board in seperate launchers seems like an waste of capabilities, space and money.
that OPV conversion of the S frigates, could you give (PM or post) me some more data on that? those are very big, fast and fuel-hungry vessels for an OPV role
so I wonder what they proposed.