Also, given these ships have no sonar (I stand to be corrected on that as I've only read one reference source on them and that didn't mention one) their main capabilities are anti-surface and anti-air. If you're near a land base then the aircraft there would be more effective than the ship for those roles in any case. I'm assuming that the ships over the horizon capability with its SSM's is extremely limited if it exists at all due to the lack of a helo.
spsun, can I refer you back to post no. #128.
In the text there's a link to the Naval technology site, to the blurb about the Nakhoda class....
SENSORS
The ship is equipped with a Radamec 2500 electro-optic weapons director, which includes an eye-safe laser range-finder, TV and thermal imager and is used for gun fire control and surveillance.
The hull-mounted sonar is the medium frequency Thales Underwater Systems TMS 4130C1.
....As for your other comments about suitability for over the horizon capability & being tied to a land based helo, well these ships do have limited helo facilities by the fact that they don't have a hanger, however they have AVCAT refueling capabilities & stowages for air weapons for the helo. These 2 facts make them an ideal (if small) sea base for a helo, thus allowing OTH capabilities.
In addition, the weapons & sensors suite have been fully integrated & operationally tested with the command system (with the exception of the missiles). Having a full 3D radar system (which is 100% compatible with those currently used within the RN), makes these vessels quite potent, with comparable fire power of a Type 23, in a smaller hull.
Finally, they were finished after the last Type 23, with up to date systems/equipment, this means that they are more modern than them.
These factors are some of the pluses I mentioned in earlier posts & also make them ideal for being integrated into a task force, if required.
Systems Adict