▁two ▁variants , ▁the ▁ME K O ▁ 3 6 0 H 1 , ▁compr ising ▁one ▁ship , ▁and ▁the ▁ME K O ▁ 3 6 0 H 2 , ▁compr ising ▁four ▁ships . ▁The ▁altern atively ▁class ed ▁as ▁fr ig ates ▁and ▁destroy ers ▁by ▁different ▁sources . ▁The ▁design ▁is ▁based ▁on ▁the ▁mod ular ▁concept ▁which ▁allows ▁sw apping ▁out ▁different ▁arm aments ▁to ▁fit ▁mission ▁requirements ▁and ▁allows ▁easier ▁application ▁of ▁up gr ades ▁and ▁ref its . ▁ ▁Vari ants ▁ ▁ME K O ▁ 3 6 0 H 1 ▁ ▁A ▁single ▁vessel ▁of ▁the ▁ME K O ▁ 3 6 0 H 1 ▁variant ▁was ▁produced ▁for ▁the ▁Niger ian ▁Navy . ▁Cal led ▁, ▁it ▁is ▁one ▁of ▁the ▁largest ▁vessels ▁of ▁that ▁n avy . ▁ ▁ME K O ▁ 3 6 0 H 2 ▁ ▁Six ▁vessels ▁were ▁ordered ▁and ▁four ▁vessels ▁of ▁a ▁second ▁variant , ▁ME K O ▁ 3 6 0 H 2 , ▁were ▁constructed ▁for ▁Argentina . ▁They ▁were ▁locally ▁named ▁the ▁. ▁They ▁are ▁considered ▁fr ig ates ▁and ▁destroy ers ▁by ▁different ▁publications . ▁The ▁design ▁is ▁based ▁on ▁the ▁concept ▁of ▁mod ular ▁systems ▁and ▁is ▁capable ▁of ▁changing ▁the ▁arm ament ▁of ▁the ▁ship ▁swift ly ▁and ▁can ▁be ▁modern ized / ref itted ▁with ▁more ▁ease . ▁ ▁The ▁ships ▁have ▁a ▁standard ▁disp lacement ▁of ▁ ▁and ▁ ▁at ▁full ▁load . ▁The ▁vessels ▁are ▁ ▁long ▁overall ▁and