What type of ship is a Kobben class vessel that has been in service longer than 2?
CREATE TABLE table_name_18 (type VARCHAR, in_service VARCHAR, vessel VARCHAR)
SELECT type FROM table_name_18 WHERE in_service > 2 AND vessel = "kobben class"
### Context: CREATE TABLE table_name_18 (type VARCHAR, in_service VARCHAR, vessel VARCHAR) ### Question: What type of ship is a Kobben class vessel that has been in service longer than 2? ### Answer: SELECT type FROM table_name_18 WHERE in_service > 2 AND vessel = "kobben class"