Unless otherwise indicated, references to "Dorian," the "Company," "we," "our," "us," or similar terms refer to Dorian LPG Ltd. and its subsidiaries and predecessors. The terms "Predecessor" and "Predecessor Business" refer to the owning companies of the four vessels that comprised our initial fleet, prior to their acquisition by us. We use the term "VLGC" to refer to very large gas carriers. We use the term "LPG" to refer to liquefied petroleum gas and we use the term "cbm" to refer to cubic meters in describing the carrying capacity of our vessels. Unless otherwise indicated, all references to "U.S. dollars," "USD," and "$" in this report are to the lawful currency of the United States of America and references to "Norwegian Krone" and "NOK" are to the lawful currency of Norway.
Dorian was incorporated on July 1, 2013 under the laws of the Republic of the Marshall Islands, is headquartered in the United States and is engaged in the transportation of LPG. Specifically, Dorian and its subsidiaries are focused on owning and operating VLGCs in the LPG shipping industry. Our founding executives have managed vessels in the LPG shipping market since 2002. Our fleet currently consists of twenty-three VLGCs, including our nineteen new fuel-efficient 84,000 cbm ECO-design VLGCs, or our ECO VLGCs, three 82,000 cbm VLGCs, and one time chartered-in VLGC. The twenty-two VLGCs in our fleet, excluding our time chartered-in vessel, have an aggregate carrying capacity of approximately 1.8 million cbm and an average age of 4.9 years as of May 24, 2019. Two of our ECO VLGCs are fitted with exhaust gas cleaning systems (commonly referred to as “scrubbers”) to reduce sulfur emissions. We have entered into contracts for an additional ten of our VLGCs to be fitted with scrubbers. We provide in-house commercial and technical management services for all of our vessels, including our vessels deployed in the Helios Pool, which may also receive commercial management services from Phoenix (defined below).
Sixteen of our ECO VLGCs were constructed at Hyundai Heavy Industries Co., Ltd., or Hyundai, and three of our ECO VLGCs were constructed at Daewoo Shipping and Marine Engineering Ltd, or Daewoo. Our nineteen ECO VLGCs, which incorporate fuel efficiency and certain custom features, were delivered to us between July 2014 and February 2016, seventeen of which were delivered during calendar year 2015 or later.