CREATE TABLE table_204_781 (id NUMBER, "name ( s ) " CLOB, "yard no." NUMBER, "type  ( as built ) " CLOB, "owner" CLOB, "imo number" NUMBER, "laid down" CLOB, "launched" CLOB, "delivered/\ commissioned" CLOB, "fate/\ decommissioned" CLOB, "notes" CLOB)

what is the only ship in this yard to be built as a lightvessel ?
SELECT "name(s)" FROM table_204_781 WHERE "type (as built)" = 'lightvessel'
SELECT "name(s)" FROM "table_204_781" WHERE "type (as built)" = 'lightvessel'