Project Tag: Oil Spill Recovery Equipment

Helena Star Derelict Vessel Removal

In January 2013, the derelict freighter MV Helena Star was abandoned and sank while moored in the Hylebos Waterway in Tacoma, WA, releasing more than 600 gallons of diesel and oil into the water. Officials determined the vessel needed to be removed, utilizing federal funding and funds from the state’s Derelict Vessel Program. The Helena Star was built …

Refloating the Tug Tiger

The United States Coast Guard tugboat Tiger sank at her mooring at the Richmond Historical Pier in California. Global responded with 4 boats,2 skimmers,boom,and spill response materials to contain and remove the released containments.

Global was contracted to continue the salvage operations,utilizing an innovative plywood freeboard panel concept in an effort to refloat the Tiger.

SS Montebello ROV Assessment

Global Diving and Salvage Inc. has been contracted by the United States Coast Guard to determine if oil is present aboard the sunken ship S.S. Montebello,which sits 900 feet below the ocean surface approximately 6.5 miles off the coast of Cambria,California.

The S.S. Montebello sank after a Japanese submarine torpedoed the large oil tanker on December 23,1941. The vessel broke apart landing upright with her bow separated from the majority of the wreckage. To date,no signs of leakage have been detected,and from previous visual inspections by submarine,the cargo section appears to be intact.

The possibility of future oil release has prompted the U.S. Coast Guard to contract Global to determine the integrity of the cargo section and its contents. Coast Guard Capt. Roger Laferrier,acting as the Federal On-Scene Coordinator,states,“The California coast is a vital national resource that we must protect.” Additionally,he explains,“Working in concert with our state and local partners,it is our duty to ensure we gain good information about the Montebello so we can do our best to protect the marine environment.”

Global’s Cougar XT ROV will be used as the platform which will support the inspection,both visual and sonar,thickness gauging,backscatter tooling operations,physical sampling of the tank contents,and sediment sampling from the general area. Global has teamed with T & T Bisso to provide engineering support and 3D modeling on the vessel. Additionally,Tracerco has been subcontracted to utilize their neutron backscatter tool,a non-invasive sensing device,which will be used to determine the presence of oil and oil/water interface.

“This sampling and observation operation will provide the answers needed to truly assess what threat,if any,the Montebello poses,” said Capt. Chris Graff from California Department of Fish and Game’s Office of Spill Prevention and Response,who will be serving as the State On-Scene Coordinator.

“Global Diving & Salvage is pleased to work in collaboration with the United States Coast Guard,other federal and state agencies,and our teaming partners to assist in the assessment of the vessel in a safe and efficient manner” says Devon Grennan,President of Global Diving & Salvage,Inc. “The project provides a unique opportunity to take a proactive approach towards mitigating potential pollution threats,and Global is proud to be a part of it.”

Crescent City – Tsunami Response

On March 11th,2011 after the 8.9 magnitude earthquake in Japan a tsunami wave crossed the Pacific Ocean landing squarely in Crescent City,California. Our crews were activated by the US Coast Guard to provide environmental and diving services necessary to address the immediate pollution threat caused by the tsunami,which damaged 30 vessels in the Crescent City Inner Harbor on the coast of Northern California.

Our initial response was directed to contain fuel which had already leaked from the various vessels,as well as to prevent fuels and oils on-board from further release. The initial dive tasks focused on surveying the wreckage and addressing the pollutants. During the survey,it was observed that several of the sunken wrecks were piled on top of each other,making it unsafe for divers to access points of release and fully seal leaks. Divers were able to seal exposed ports and remove fuel from the tanks of vessels they could access.

To safely remove the unstable vessels a derrick barge was brought in from San Francisco. Divers used straps and slings to rig the larger,more intact sunken wrecks to lift them from the water A clam bucket was used grip the smaller and more severely damaged vessels. All wrecks were transported to shore for proper upland disposal.

In all 10 sunken vessels were removed from the Inner Harbor. Over 400 gallons of fuel and oily waste were contained and properly disposed of.

Prince William Sound Fishing Vessel Salvage

Global Diving & Salvage,Inc. responded to the rescue of the shipwrecked 42’ F/V fishing vessel,hard aground on the rocky shore of Latouche Island,a remote island near the western entrance to Alaska’s pristine Prince William Sound. Global’s response included a salvage master and crew equipped to quickly mitigate the threat to the extremely sensitive marine environment through the safe recovery of fuel and other oils from the vessel. The RUFFIAN was subsequently patched,successfully refloated and towed to Whittier,Alaska where she was safely delivered to her owner.

Deepwater Horizon Spill Response

Provided shoreline clean-up services to the Gulf of Mexico oil spill clean-up effort following the explosion and fire aboard Transocean’s Deepwater Horizon drilling rig on Tuesday 20 April at approximately 10:00 pm US central time. Our crews were initially stationed in Pascagoula,MS before being relocated to Cocodrie,LA in an effort to protect the state’s barrier islands .

A Unified Command was established to manage response operations.

Angel Rae Salvage

A live-aboard vessel sank at it moorage on the Duwamish River. Global Diving was contracted by Department of Ecology to mitigate any potential fuel release as well as raise the vessel and remove it from the water. Containment boom was deployed around the vessel as well as various locations around marina to mitigate the spread of fuel in the river current. The fuel vents and caps were sealed. Lifting straps were run under the vessel. A derrick was brought to the site to lift the vessel off bottom. Once on the surface,water was pumped from the hull.