Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey

The wreck site of the Australian First World War submarine HMAS AE2 in the Sea of Marmara had a salinity of 26‰ (parts per thousand) for the first 13 m, which increased to 41‰ at 21 m, after which it remained constant to the bottom at 72 m, where the dissolved oxygen was three...

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Main Author: Ian D. MacLeod
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Heritage
Subjects:
Online Access:http://www.mdpi.com/2571-9408/2/1/58
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author Ian D. MacLeod
author_facet Ian D. MacLeod
author_sort Ian D. MacLeod
collection DOAJ
description The wreck site of the Australian First World War submarine HMAS AE2 in the Sea of Marmara had a salinity of 26‰ (parts per thousand) for the first 13 m, which increased to 41‰ at 21 m, after which it remained constant to the bottom at 72 m, where the dissolved oxygen was three parts per million. The vessel is protected by a very dense anaerobic concretion and lies half above a silt mound. Cross-sections of a concretion sample revealed the original surface, associated paint films and a series of burial-exposure episodes that reflected periodic changes in the silt levels, which are likely associated with major storms. Core samples of sediment have established the impact of the vessel on the site. Corrosion simulation experiments have established the direct linkage between chloride levels underneath the concretion layer and the pH of the entrapped solution. Following the initial drop camera survey, an ROV (Remote Observation Vehicle) examination of the interior of the boat showed a remarkable degree of preservation. A network of ten-tonnes of zinc anodes were distributed at the stern, amidships and the bow to bring about in-situ conservation of the historic submarine.
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spelling doaj.art-6065c53c7aea45708eaff201560a7dbb2022-12-21T19:53:45ZengMDPI AGHeritage2571-94082019-03-012186888310.3390/heritage2010058heritage2010058Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, TurkeyIan D. MacLeod0Western Australian Maritime Museum, Victoria Quay Drive, Fremantle, WA 6160, AustraliaThe wreck site of the Australian First World War submarine HMAS AE2 in the Sea of Marmara had a salinity of 26‰ (parts per thousand) for the first 13 m, which increased to 41‰ at 21 m, after which it remained constant to the bottom at 72 m, where the dissolved oxygen was three parts per million. The vessel is protected by a very dense anaerobic concretion and lies half above a silt mound. Cross-sections of a concretion sample revealed the original surface, associated paint films and a series of burial-exposure episodes that reflected periodic changes in the silt levels, which are likely associated with major storms. Core samples of sediment have established the impact of the vessel on the site. Corrosion simulation experiments have established the direct linkage between chloride levels underneath the concretion layer and the pH of the entrapped solution. Following the initial drop camera survey, an ROV (Remote Observation Vehicle) examination of the interior of the boat showed a remarkable degree of preservation. A network of ten-tonnes of zinc anodes were distributed at the stern, amidships and the bow to bring about in-situ conservation of the historic submarine.http://www.mdpi.com/2571-9408/2/1/58AE2 submarineTurkeyFirst World Warin-situ conservationsediment corescorrosionsimulationsacrificial anodes
spellingShingle Ian D. MacLeod
Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
Heritage
AE2 submarine
Turkey
First World War
in-situ conservation
sediment cores
corrosion
simulation
sacrificial anodes
title Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
title_full Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
title_fullStr Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
title_full_unstemmed Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
title_short Corrosion and Conservation Management of the Submarine HMAS AE2 (1915) in the Sea of Marmara, Turkey
title_sort corrosion and conservation management of the submarine hmas ae2 1915 in the sea of marmara turkey
topic AE2 submarine
Turkey
First World War
in-situ conservation
sediment cores
corrosion
simulation
sacrificial anodes
url http://www.mdpi.com/2571-9408/2/1/58
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