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WWII WRECKS – A TOXIC LEGACY?

Maritime archeologist Matt Carter discusses what brought him to Chuuk Lagoon and his quest to call attention to the oil leaking from WWII shipwrecks, the focus of the Major Projects Foundation, where he serves as Research Director. The foundation was created with the goal of working with Pacific nations to protect their marine ecosystems from potential oil spills from WWII shipwrecks, and is currently working to determine determining how much oil the ships lost in the Asia-Pacific region still hold. Previously a team of international experts calculated the amount of oil to be anywhere between 150 million and 1.2 billion gallons.

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Header image by Steve Trewavas. The port propeller of the Rio de Janeiro Maru clearly showing the huge scale of the shipwreck.

Maritime archeologist Matt Carter discusses what brought him to Chuuk Lagoon and his quest to call attention to the oil leaking from WWII shipwrecks, the focus of the  Major Projects Foundation (MPF), where he serves as Research Director. The foundation was created with the goal of working with Pacific nations to protect their marine ecosystems from oil spills from WWII shipwrecks.

What many people know is that between 1939 and 1945, the Japanese military and the Allied powers fought an increasingly bloody war through South-East Asia and out across the Pacific Ocean. What fewer people know is that this maritime war saw the loss of some 3800 ships which sank, taking with them their crew, cargoes, and in some cases huge volumes of toxic heavy fuel oil. 

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A volunteer cleaning oil spilled from the wreck of the MV Wakashio in August 2020. (Photo: Shutterstock)

One of the questions that Carter is asked frequently is how much oil could these ships possibly still be holding today? In 2005, a team of international experts came together to answer just that question. Searching through archives for information on these potentially polluting shipwrecks (PPW), they calculated that combined, all of the ships lost in the Asia-Pacific Region could possibly still hold anywhere between 150 million and 1.2 billion gallons of oil!

MPF was established in 2018. After signing a memorandum of understanding with the Secretariat of the Pacific Regional Environment Programme (SPREP), the foundation began reviewing and prioritizing the 3800 WWII shipwrecks sunk in the Asia-Pacific Region, resulting in a priority list of 55 PPW deemed to be the highest environmental risk. Seventeen of these wrecks are located in the world-famous diving Mecca of Chuuk Lagoon in the Federated States of Micronesia.

One of the key tools that the foundation used for investigating the condition of the PPW in Chuuk was photogrammetry, a process where a wreck is scanned by divers taking thousands of overlapping photos which are then run through a 3D software program. The main focus of this photogrammetry work was the wreck of the Rio de Janiero Maru, as oil leaks from the wreck were thought to have impacted nearby mangroves in 2008. Over multiple dives, the foundation surveyed and scanned the shipwreck taking 7350 photos and three hours of video. This was the first time that any of the wrecks in Chuuk Lagoon had been recorded in this way resulting in the 3D model shown below. 

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3D model of the 140-metre-long Rio de Janeiro Maru. The model comprises 7,350 high-resolution images Photo Dr. Matt Carter/Major Projects Foundation

From this survey, Carter was able to create a baseline condition assessment of the Rio de Janeiro Maru including a hull integrity assessment that has allowed for a more accurate estimation of the amount of oil that may remain inside the wreck. This information was subsequently incorporated into a ‘Likelihood of Oil Release’ assessment providing MPF and the Chuukese authorities with a greater understanding of the potential threat that this wreck poses.

The survey of the Rio de Janeiro Maru has shown what can be achieved through the combination of marine archaeology, technical diving, and photogrammetry. However, this is only the first of the 55 potentially polluting wrecks throughout the Pacific that MPF and its partners urgently need to assess in order to mitigate the impact that these ticking ecological time bombs will have on the people and marine ecosystems of the region. 

Read The Full Article Here 

Conservation

New Limited Edition Project Baseline BCD Wings

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Halcyon Dive Systems has teamed up with Project Baseline to produce PB branded wings that will be for direct order from Halcyon or a Halcyon Dealer near you. 

Proceeds from the purchase of your wing will help sustain Project Baseline’s global database, strengthen our capacity to advocate for policy changes needed to restore and protect the type of underwater world we all want and need.

Project Baseline will also be doing a membership drive for the month of June. By becoming a Project Baseline Member* during June will be added to a raffle to win a PB wing of their choice.  

Place your order for a PB wing here.

Learn more about Project Baseline

Submit your Project Baseline data here

*A GUE Conservation level membership is not equal to a Project Baseline membership and is not a way to enter the drawing.


Project Baseline’s mission is to mobilize citizen-divers to record change in the world’s underwater environments and to engage with scientific, conservation, and government entities to advance the restoration and protection of our natural and cultural treasures.

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