NOAA Report Examines Shipwreck Oil Pollution Threat

MarineLink.com
Tuesday, May 21, 2013
14 May, 1942, U. S. Army Air Corps photographs of the burning tanker Potrero del Llano location. (Credit: Images courtesy of National Archives, College Park, MD )

NOAA presented to the U.S. Coast Guard today a new report that finds that 36 sunken vessels scattered across the U.S. seafloor could pose an oil pollution threat to the nation’s coastal marine resources. Of those, 17 were recommended for further assessment and potential removal of both fuel oil and oil cargo.

The sunken vessels are a legacy of more than a century of U.S. commerce and warfare. They include a barge lost in rough seas in 1936; two motor-powered ships that sank in separate collisions in 1947 and 1952; and a tanker that exploded and sank in 1984. The remaining sites are 13 merchant marine ships lost during World War II, primarily along the Atlantic Seaboard and Gulf of Mexico.

The report, part of NOAA’s Remediation of Underwater Legacy Environmental Threats (RULET) project, identifies the location and nature of potential sources of oil pollution from sunken vessels. Knowing where these vessels are helps oil response planning efforts and may help in the investigation of reported mystery spills--sightings of oil where a source is not immediately known or suspected.

“This report is the most comprehensive assessment to date of the potential oil pollution threats from shipwrecks in U.S. waters,” said Lisa Symons, resource protection coordinator for NOAA’s Office of National Marine Sanctuaries. “Now that we have analyzed this data, the Coast Guard will be able to evaluate NOAA’s recommendations and determine the most appropriate response to potential threats.”

“The Coast Guard is pleased to receive these risk assessments from our partner agency NOAA and looks forward to our continued coordination on the matter of potential pollution associated with sunken vessels in U.S. waters,” said Capt. John Caplis, the Coast Guard’s chief of marine environmental response. “Coast Guard federal on-scene coordinators receiving the risk assessments will carefully review the data and incorporate it into their area contingency plans.”

In 2010, Congress appropriated $1 million for NOAA to develop a list of the most significant potentially polluting wrecks in U.S. waters, including the Great Lakes, specifically addressing ecological and socio-economic resources at risk. Those funds were not intended for oil or vessel removal.

NOAA maintains the internal Resources and UnderSea Threats (RUST) database of approximately 30,000 sites of sunken material, of which 20,000 are shipwrecks. The remaining items are munitions dumpsites, navigational obstructions, underwater archaeological sites, and other underwater resources.

Initial screening of these shipwrecks revealed 573 that could pose substantial pollution risks, based on the vessel’s age, type, and size. This includes vessels built after 1891, when U.S. vessels began using fuel oil; vessels built of steel; vessels over 1,000 gross tons, and any tank vessel.

Additional research about the circumstances of each vessel’s loss narrowed that number to 107 shipwrecks. Of those, some were deemed navigational hazards and demolished, and others were salvaged. Most of the 107 wrecks have not been directly surveyed for pollution potential, and in some cases little is known about their current condition.

To prioritize and determine which vessels are candidates for further evaluation, NOAA used a series of risk factors to assess the likelihood of substantial amounts of oil remaining onboard, and the potential ecological and environmental effects if that oil spills. Risk factors include the total oil volume onboard as cargo or fuel, the type of oil, and the nature of the sinking event. For example, a vessel that was struck by multiple torpedoes would likely contain less oil than a vessel that sank in bad weather.

After this third level of screening, 87 wrecks remained on the list developed for the Coast Guard’s area contingency plans. Among this group, NOAA determined that 36 shipwrecks are candidates for a “Worst Case” discharge event in which the shipwreck’s entire fuel oil and oil cargo would be released simultaneously, and recommended that 17 of these wrecks be considered for further assessment and feasibility of oil removal.

Six wrecks are potential candidates for a “Most Probable” discharge event, where a shipwreck could lose approximately 10 percent of its fuel oil or oil cargo. To date, known oil discharges from shipwrecks are typically in the “Most Probable” category or smaller.

The report, including 87 risk assessments, is not intended to direct Coast Guard activities, but rather provide the Coast Guard with NOAA’s scientific and technical assessment and guidance as a natural resource and cultural heritage trustee.

The Coast Guard, as the federal On-scene Coordinator for mitigating oil spills in the coastal marine environment, the Regional Response Teams, and local Area Committees, as established under the Oil Pollution Act of 1990, will review and incorporate the assessments into regional and area marine environmental response contingency plans. The individual risk assessments not only highlight concerns about potential ecological and socio-economic impacts, but also characterize most of the vessels as historically significant and many of them as grave sites, both civilian and military.

Funding for any assessment or recovery operations determined to be necessary is dependent upon the unique circumstances of the wreck. If a wreck still has an identifiable owner, that owner is responsible for the cost of cleanup. Coast Guard officials say that if no responsible party exists, the Oil Spill Liability Trust Fund would likely be accessed.

As America’s maritime first responder, the Coast Guard protects those on the sea, protects our nation from threats delivered by sea, and protects the sea itself. By executing our marine environmental protection responsibilities, the Coast Guard reduces the risk of harm to the marine environment by developing and enforcing regulations to prevent and respond to maritime oil spills and hazardous substance releases.
 

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Environmental

NZ Report: Human Error to Blame for Rena Grounding

New Zealand's Transport Accident Investigation Commission (TAIC) published its final report into the grounding of containership Rena in October 2011. The TAIC’s

Costa Rica Approves APM Terminals Project

Port operator APM Terminals, a unit of Denmark's A.P. Moller-Maersk, said on Friday Costa Rica's environment agency had approved the construction of its Moin Container Terminal project.

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

Salvage

NZ Report: Human Error to Blame for Rena Grounding

New Zealand's Transport Accident Investigation Commission (TAIC) published its final report into the grounding of containership Rena in October 2011. The TAIC’s

Workboats: Communications is Key Operational Tech

As we close out yet another year, I am constantly amazed at how much things change on the waterfront and the boats that ply the adjacent waters. Similarly, I like

Report: Dire Conditions in Indian Shipbreaking Yards

Report by Indian research institute reveals poor enforcement of occupational health and safety provisions   The working and living conditions at the shipbreaking yards of Alang,

Vessels

Damen Outfitting First of Nine Bahamas Patrol Boats

The first of nine Damen Stan Patrol 3007s ordered by the Royal Bahamas Defense Force has arrived at Damen Shipyards Gorinchem in the Netherlands for outfitting.

MARAD Publishes US ATB, ITB Database

The U.S. Maritime Administration (MARAD) released what it is calling a first-of-its-kind public database that chronicles U.S.-flagged, privately owned domestic

New Chinese Shipyard Launches First Ship

The new shipyard facility of Honghua Offshore Oil & Gas Equipment Company in Jiangsu, China, has launched its first ship, an IMT982 Platform Supply Vessel. The vessel,

 
 
Maritime Security Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.4853 sec (2 req/sec)