OSV Monarch

November , 2009

The Monarch, a 166-foot offshore supply vessel,was submerged at the base of the Granite Point oil platform in northern Cook Inlet after its collision with the platform in heavy ice on Jan.15, 2009.

At the time of the sinking, an estimated 34,603 gallons of diesel fuel and lube oil were on-board the vessel posing an enviromental risk. The fuel had to be removed.

Global was hired to monitor the situation and complete an initial vessel damage assessment in May. A sonar and bathomtetric survey were used to determine if the vessel was moving during the, up to 24 foot tidal changes in the area.

With extensive planning and careflu execution the fuel was successfully removed in 34 dives. The operation commenced in July with our divers diving three times per day. The fuel was removed using hoses and vacuum wands that pumped the fuel oil into temporary storage tanks.

The vessel is still on bottom and continually monitored.