<P> OPA also set a schedule for the gradual phase in of a double hull design, providing an additional layer between the oil tanks and the ocean . While a double hull would likely not have prevented the Valdez disaster, a Coast Guard study estimated that it would have cut the amount of oil spilled by 60 percent . </P> <P> The Exxon Valdez supertanker was towed to San Diego, arriving on July 10 . Repairs began on July 30 . Approximately 1,600 short tons (1,500 t) of steel were removed and replaced . In June 1990 the tanker, renamed S / R Mediterranean, left harbor after $30 million of repairs . It was still sailing as of January 2010, registered in Panama . The vessel was then owned by a Hong Kong company, who operated it under the name Oriental Nicety . In August 2012, it was beached at Alang, India and dismantled . </P> <P> In the aftermath of the spill, Alaska governor Steve Cowper issued an executive order requiring two tugboats to escort every loaded tanker from Valdez out through Prince William Sound to Hinchinbrook Entrance . As the plan evolved in the 1990s, one of the two routine tugboats was replaced with a 210 - foot (64 m) Escort Response Vehicle (ERV). Tankers at Valdez are no longer single - hulled . Congress enacted legislation requiring all tankers to be double - hulled as of 2015 . </P> <P> In 1991, following the collapse of the local marine population (particularly clams, herring and seals) the Chugach Alaska Corporation, an Alaska Native Corporation, filed for Chapter 11 bankruptcy protection . It has since recovered . </P>

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