The collision between a Panama-owned tanker and a Curtis Bay coal pier caused in excess of $22 million in damages — more than four times the original claim — according to documents filed in U.S. District Court by CSX Transportation, the pier owner.

The Aug. 25 accident took the Bayside Coal Pier out of action for nearly two months and a CSX employee was hospitalized for injuries, said CSX, a railroad based in Jacksonville, Fla.

The 479-foot Wawasan Ruby was making a left turn from Curtis Bay on its approach to the Bitumar Asphalt Dock when it struck the Bayside pier. In its filing, CSX accused vessel owner Trio Happiness S.A. of operating an "unseaworthy, unportworthy and unfit" vessel.

A lawyer for Trio Happiness said that the ship, built in 2010, was under the control of a member of the Association of Maryland Pilots.

The Coast Guard has not completed its investigation.

Another status report by both sides must be submitted to Judge Richard Bennett by Jan. 4.