The New Panamax category is based on the maximum vessel-size that is able to transit a new third set of locks, which opened in June 2016.[23][24] The third set of locks were built to accommodate a container ship with a length overall of 366 metres (1,201 ft), a maximum width of 49 metres (161 ft), and tropical fresh-water draft of 15.2 metres (50 ft).[24][25] Such a vessel, called New Panamax class, is wide enough to carry 19 columns of containers, can have a total capacity of approximately 12,000 TEU and is comparable in size to a capesize bulk carrier or a Suezmax tanker.[25]