By the time he reaches the other end and looks back, he feels more as if he were standing on a dock gazing up at the prow of a huge ocean-going vessel, perhaps one of Pessoa's dream ships.

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Coroner Dewi Pritchard-Jones said there were weaknesses concerning the vessel going back to a survey in 2002, which did not seem to have been acted upon.

BBC: An RNLI lifeboat

"That group will also be looking at human performance, how the crew interacted, what was going on the bridge of that vessel" before the collision, Mr. Sumwalt said.

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Has the administration worked out clearly in its own mind what its procedures are going to be in tracking this vessel to -- in order to enforce the U.N. sanctions?

WHITEHOUSE: Press Briefing

Gliders, moreover, give a continuous view of what is going on, rather than the series of snapshots yielded by equipment lowered from a vessel at the surface.

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