Question: What is the Ship Type of the Prize Disposition of ship and a tonnage less than 151?
SQL: SELECT "Ship Type" FROM "2-18137936-1" WHERE "Disposition of Ship" = 'Prize' AND "Tonnage" < 151.0;

Question: What is the highest tonnage of the Brig Ship Type and the disposition of Ship of Prize?
SQL: SELECT MAX("Tonnage") FROM "2-18137936-1" WHERE "Ship Type" = 'Brig' AND "Disposition of Ship" = 'Prize';