1.   The Highway Patrol still is investigating the wreck and has not yet determined its cause.

2.   Pickford spent ten years investigating the wreck, teaming up with Swedish marine salvage expert Sverker Hallstrom to find the Douro.

3.   The freeway was closed from morning rush hour until mid-afternoon while debris was cleared and the wreck was investigated.

4.   The Navy was to send a deep-sea robot to investigate the wreck and see if recovering it is possible.

5.   The U.S. Navy was to send a deep-sea robot to investigate the wreck and see if that was possible.

6.   The U.S. Navy has sent a submersible underwater device equipped with sonar and video cameras to investigate the wreck and see if that was possible.

7.   The U.S. Navy sent a submersible underwater device equipped with sonar and video cameras to investigate the wreck and see if that was possible.

8.   Witte said he expected a ruling from the French court later this year, which would permit the divers to investigate the wreck.

9.   Greek authorities have no plans to investigate the wreck because the ship was not flying a Greek flag, the ministry added.

10.   Before investigating the wreck, the company must ensure that the Estonia is resting stable on the ocean bed.