Aegean Marine Petroleum Network is a holding company. Through its subsidiaries, Co. markets and physically supplies refined marine fuel and lubricants to vessels. As a physical supplier, Co. procures marine fuel from refineries, major oil producers and other sources and resells and delivers these fuels using Co.'s bunkering vessels to a broad base of end users, including oil tankers, container ships, drybulk carriers, cruise ships, reefers, LNG/LPG carriers, car carriers, ferries, marine fuel traders, brokers and other users. As of Dec. 31, 2016, Co. owns a fleet of 45 bunkering vessels, all of which are double-hulls, and Co. charters in 13 bunkering vessels, all of which are double-hulls.