Navigator Holdings Ltd. is an owner and operator of a fleet of handysize liquefied gas carriers. The Company provides international and regional seaborne transportation services of liquefied petroleum gas (LPG), petrochemical gases and ammonia. As of December 31, 2016, it had 33 semi- or fully-refrigerated handysize liquefied gas carriers. Its handysize liquefied gas carriers are liquefied gas carriers with capabilities between 15,000 and 24,999 cubic meter (cbm). Its handysize liquefied gas carriers can accommodate medium- and long-haul routes. In addition, it had four midsize 37,300 cbm ethylene-capable semi-refrigerated liquefied gas carriers as of December 31, 2016. Its midsize ethylene-capable semi-refrigerated gas carriers enable long-haul transportation of ethane/ethylene. As of December 31, 2016, it also had one 38,000 cbm fully refrigerated gas carrier. The Company carries LPG for international energy companies, state-owned utilities and commodities traders.