Tiger and Cougar class light frigates. IEP via a pair of MT30s and 2 MTU V16s for ship and system power. Reasonably high speed with adequate endurance this collection of mid sized vessels doesn't really have much of a place within the naval forces of Atlantia, they lack much of a punch to be really useful in either the AAW or ASW roles when compared to their siblings (the Metallurgy class of FFGs) and they lack much of the endurance needed for extended operations without having to rely on UNREP or docking in friendly ports... They're well liked by their crews despite their lack of direction.
The Tigers were the forerunners of the design featuring quite a small helipad and short 16 cell Mk41 whilst in production changes were made to the design increasing the size of aviation facilities and size of the Mk41 to accommodate more capable systems in the form of the Barracuda (MH-60) and the ability to launch SM-2 and SM-6 in addition to ESSM.
They achieve the best part of 38 knots at full power and cruise at 17 knots for a range of roughly 3700km. It has been well documented how wet they tend to get when travelling at speed however.
Complete armament consists of: 1x 76mm SR, 1x 16 cell Mk41 (SDLS or Tactical depending), 2x Rheinmetall Millennium 35mm CIWS, 2x Oto Melara Marlin WS with complete Rheinmetall 27mm cannon, 4x Kongsberg Protector RWS with either M134D or M3Ms and 8x Kongsberg NSM AShMs.
They have aviation facilities for one helicopter either an AB.212/AW159 or WS70 depending on the group. They also carry two 9m RIBs amidships.