Question: What is the fate for the Bremen ship?
SQL: SELECT "Fate" FROM "2-18215055-1" WHERE "Ship" = 'Bremen';

Question: Who is the original operator for the AG Vulcan builder and the Prinzess Irene ship?
SQL: SELECT "Original Operator" FROM "2-18215055-1" WHERE "Builder" = 'AG Vulcan' AND "Ship" = 'Prinzess Irene';

Question: What is the Tonnage that has builder AG Vulcan, and the original operator NDL, and the ship, Prinzess Irene?
SQL: SELECT "Tonnage" FROM "2-18215055-1" WHERE "Builder" = 'AG Vulcan' AND "Original Operator" = 'NDL' AND "Ship" = 'Prinzess Irene';