a fast-growing international marine transportation company, historically part of the d'Amico Group that traces its origins to 1936. We control, either through ownership or charter arrangements, a modern fleet of 35.9 product tanker vessels, aggregating approximately 1.60 million deadweight tons (dwt). Our fleet includes fourteen owned and ten chartered in medium range product tankers (MRs), ranging from 46,000 to 51,000 dwt, and three owned and four chartered in handysize product tankers, ranging from 36,000 to 40,000 dwt. In addition, through the Handytankers Pool, we have partial interests in the charters of eleven handysize product tankers. We employ most of our fleet through three commercial partnership arrangements.
a young fleet, with an average age of approximately 3.9 years, compared to an average in the product tanker industry of about 10.6 years. All of our vessels are built in accordance with international industry standards and are compliant, among others, with IMO (International Maritime Organization) regulations and MARPOL (the International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978); In addition, we comply with the stringent requirements of major oil and energy-related companies.
Based on recent revisions to Annexes I and II to MARPOL, adopted by the IMO and effective as of 1 January 2007, cargoes, such as palm oil, vegetable oil, bio-diesel, and a range of other chemicals can only be transported by vessels that meet the requirements stated in these revised annexes (hereinafter referred to as IMO Classified). Approximately 71% of our present fleet, calculated by number of vessels, is IMO Classified.