company’s wholly-owned shipyard, Quality Shipyards, L.L.C.) at a total cost, including contract costs and  other incidental costs, of approximately $742.4 million, including contract costs and other incidental costs, of  which costs for the 31 new-build vessels totaled $681.8 million. In particular, the company is committed to  the construction of 13 anchor handling towing supply vessels ranging between 5,150 and 13,570 brake  horsepower (BHP), 16 platform supply vessels ranging between 2,965 and 5,400 deadweight tons of cargo  capacity, and two crewboats. Scheduled delivery for these vessels began in April 2010 with delivery of the  final vessel expected in July 2012. The company also had at such date binding agreements to purchase five  anchor handling towing supply vessels for a total cost of approximately $60.6 million. In April 2010, the  company took possession of three of these five anchor handling towing supply vessels, and plans to take  possession of the fourth and fifth anchor handling towing supply vessels in May and June of 2010,  respectively. At March 31, 2010, the company had invested $271.9 million in progress payments towards  the construction of 31 vessels, and no payments have been made on the purchase of five anchor handling  towing supply vessels. The remaining expenditures necessary to complete construction of the 31 vessels  currently under construction (based on contract prices), and to fund the acquisition of the five anchor  handling towing supply vessels was $470.5 million at March 31, 2010.  A full discussion of the company’s capital commitments, scheduled delivery dates and vessel sales is  disclosed in the “Vessel Count, Dispositions, Acquisitions and Construction Programs” section of Item 7 and  Note 10 of Notes to Consolidated Financial Statements included in Item 8 of this report. The “Vessel Count,  Dispositions, Acquisitions and Construction Programs” section of Item 7 also contains a table comparing the  actual March 31, 2010 vessel count and the average number of vessels by class and geographic distribution  during the three years ended March 31, 2010, 2009 and 2008.  Between April 1999 and March 2010, the company also sold, primarily to buyers that operate outside of our  industry, 508 vessels. Most of the vessel sales were at prices that exceeded their carrying values. In  aggregate, proceeds from, and pre-tax gains on, vessel dispositions during this period approximated  $746.0 million and $256.4 million, respectively.  The company's vessels regularly and routinely move from one operating area to another, often to and from  offshore operating areas of different continents. The company discloses its vessel statistical information,  such as revenue, utilization and average day rates, by vessel class. Listed below are the company’s five  major vessel classes along with a description of the type of vessels categorized in each class and the  services the respective vessels typically perform. Tables comparing the average size of the company's  marine fleet by class and geographic distribution for the last three fiscal years are included in Item 7 of this  report. Included in this vessel class are large, platform supply vessels (PSVs) and large, higher-horsepower  (generally greater than 10,000 horsepower) anchor handling towing supply (AHTS) vessels. This vessel  class is generally chartered to customers for use in transporting supplies and equipment from shore bases  to deepwater and intermediate water depth offshore drilling rigs, platforms and other installations. Platform  supply vessels, which have large cargo handling capabilities, serve drilling and production facilities and  support offshore construction and maintenance work. The anchor handling towing supply vessels are  equipped to tow drilling rigs and other marine equipment, as well as to set anchors for the positioning and  mooring of drilling rigs. Also included in this vessel class are specialty vessels that can support offshore  well stimulation, construction work, subsea services and/or have fire fighting capabilities and/or accommodation facilities. These vessels are generally available for routine supply and towing services but  are outfitted and primarily intended for specialty services. Included in the specialty vessel category is the  company’s one multi-purpose platform supply vessel (MPSV), which is designed for subsea service and  construction support activities.  This is the company’s largest fleet class by number of vessels. Included in this class are anchor handling  towing supply vessels and supply vessels with average horsepower below 10,000 BHP, and platform supply  vessels that are generally less than 230 feet. The vessels in this class perform the same functions and  Our Vessel Classifications  Deepwater Vessels Towing-Supply and Supply Vessels -8- 