CREATE TABLE table_32996 ("Date" TEXT, "Ship" TEXT, "Nationality" TEXT, "Tonnage" FLOAT, "Fate" TEXT)

What was the tonnage of the Great Britain ship Batna?
SELECT "Tonnage" FROM table_32996 WHERE "Nationality" = 'great britain' AND "Ship" = 'batna'
SELECT "Tonnage" FROM "table_32996" WHERE "Nationality" = 'great britain' AND "Ship" = 'batna'