Question: what is the maximum number of hull numbers?
SQL: SELECT MAX("Hull Numbers") FROM "1-12232526-2";

Question: who is the class where note is Reportedly still active as of 2012?
SQL: SELECT "Class" FROM "1-12232526-2" WHERE "Note" = 'Reportedly still active as of 2012';

Question: what is the maximum number of hull nunbers where ship name is KRI Yos Sudarso?
SQL: SELECT MAX("Hull Numbers") FROM "1-12232526-2" WHERE "Ship Name" = 'KRI Yos Sudarso';