What is the fleet size of the Vanguard 0-6-0dh class?
CREATE TABLE table_name_73 (fleet_size VARCHAR, class VARCHAR)
SELECT fleet_size FROM table_name_73 WHERE class = "vanguard 0-6-0dh"
### Context: CREATE TABLE table_name_73 (fleet_size VARCHAR, class VARCHAR) ### Question: What is the fleet size of the Vanguard 0-6-0dh class? ### Answer: SELECT fleet_size FROM table_name_73 WHERE class = "vanguard 0-6-0dh"