The Noble Discoverer slipped its mooring in Unalaska Bay , Shell says . It drifted towards shore near Unalaska Bay , a petty officer says . Shell Oil says it is investigating the incident . The Coast Guard plans an inspection of the interior of the ship 's hull on Monday , the same day that Shell will use a diver to conduct a secondary inspection of the outer hull . The Noble Discoverer is One of the ships Shell Oil plans to use to drill in the Dutch Harbor .
The Noble Discoverer slipped its mooring in Unalaska Bay , Shell says . It drifted towards shore near Unalaska Bay , a petty officer says . Shell Oil says it is investigating the incident . The Noble Discoverer is One of the ships Shell Oil plans to use to drill in the Dutch Harbor .