▁engineer ▁section , ▁transport ▁section , ▁mine ▁war fare ▁section , ▁replacement ▁section , ▁and ▁ar sen al . ▁ ▁The ▁old ▁Aust rian ▁craft ▁being ▁considered ▁ob sol es cent ▁by ▁the ▁late ▁ 1 9 2 0 s , ▁plans ▁were ▁made ▁to ▁build ▁two ▁new ▁large ▁river ▁mon itors . ▁One ▁of ▁these , ▁President ▁Mas ary k , ▁was ▁built , ▁being ▁commission ed ▁in ▁ 1 9 3 2 . ▁With ▁four ▁ ▁guns , ▁President ▁Mas ary k ▁was ▁the ▁flags hip ▁and ▁most ▁powerful ▁ship ▁of ▁the ▁Dan ube ▁fl ot illa . ▁President ▁Mas ary k ▁was ▁the ▁only ▁Czech oslov ak ian ▁ship ▁able , ▁to ▁some ▁degree , ▁to ▁match ▁the ▁best ▁ships ▁of ▁the ▁more ▁powerful ▁fle ets ▁of ▁the ▁other ▁Dan ub ian ▁powers ▁( Y ug oslav ia , ▁Roman ia , ▁and ▁Hung ary ) ▁in ▁the ▁ 1 9 3 0 s . ▁ ▁The ▁fl ot illa ▁also ▁included ▁various ▁other ▁craft . ▁The ▁gun bo ats ▁MD - 1 ▁and ▁MD - 2 , ▁originally ▁ordered ▁for ▁Austria - H ung ary ▁as ▁tor ped o ▁retr ie vers , ▁were ▁equ ipped ▁with ▁ 2 ▁single ▁mount ▁Š k oda ▁ ▁can non , ▁two ▁machine ▁guns , ▁and ▁mines . ▁The ▁O M H ▁class ▁launch es ▁were ▁also ▁ordered ▁by ▁Austria ▁but ▁not ▁completed ▁until ▁ 1 9 2 4 ; ▁their ▁only ▁arm ament ▁was ▁two ▁machine ▁guns . ▁Two ▁small ▁min