CREATE TABLE table_204_33 (id NUMBER, "number" NUMBER, "name" CLOB, "year built" NUMBER, "boat builder" CLOB, "current status" CLOB)

which boat builder is the most popular ?
SELECT "boat builder" FROM table_204_33 GROUP BY "boat builder" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "boat builder" FROM "table_204_33" GROUP BY "boat builder" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY