Tug Valour Sinking a Puzzle - Maritrans says it does not know why it happened?

Maritrans, the Coast Guard and the families of the crew do not yet know why the Tug Valour took on water and went down in 14 foot seas. A tug of that size should have been able to handle those seas. Maybe interviews of the rescued crew, examination of the tug (if possible) or a review of company records will shed some light on why this tragedy occurred. Dwayne Clark