CREATE TABLE "table1_12232526_2" (
  "class" text,
  "ship_name" text,
  "origin" text,
  "hull_numbers" real,
  "service_years" text,
  "previously" text,
  "note" text
);

Question: what is the maximum number of hull numbers?
SQL: SELECT MAX("hull_numbers") FROM "table1_12232526_2";

Question: who is the class where note is reportedly still active as of 2012?
SQL: SELECT "class" FROM "table1_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 "table1_12232526_2" WHERE "ship_name"='KRI Yos Sudarso';