CREATE TABLE table_204_100 (id NUMBER, "date" CLOB, "name of ship" CLOB, "nationality" CLOB, "tonnage" NUMBER, "fate" CLOB)

boat with the least tonnage that was attacked
SELECT "name of ship" FROM table_204_100 ORDER BY "tonnage" LIMIT 1
SELECT "name of ship" FROM "table_204_100" ORDER BY "tonnage" FETCH FIRST 1 ROWS ONLY