This dataset documents field investigations on the biological effects of legacy World War I munitions on marine organisms, with a focus on shipwreck sites in the North Sea. Three historically well-documented wrecks were selected: the light cruiser SMS Mainz, the minelayer SMS Ariadne, and the submarine UC30. These wrecks were chosen based on detailed archival information regarding their sinking circumstances and cargo, their unambiguous identification, and their accessibility for scientific diving operations. As a munition-free control, a reference area outside known wreck fields was sampled (Naturschutzgebiet Borkum Riffgrund). The flatfish Limanda limanda (dab) was selected as a sentinel species. Sampling was conducted during several cruises with the research vessel Heincke (HE 573, April 2021 – SMS Mainz; HE 596, April 2022 – UC30 and SMS Ariadne; HE 607, September 2022 – UC30; HE 613, February 2023 – SMS Ariadne) and with the Uthörn (May 2022 – reference site). Fish were caught using bottom trawls deployed as close as possible to the wreck structures. Captured fish were transferred to seawater tanks prior to dissection. Each specimen was measured, weighed, and assessed biometrically to calculate condition factors as indicators of general health. Subsequent processing included macroscopic examination of livers for pathological alterations (e.g., fatty liver, nodules, bile stasis, tumor formation). Liver tissue was partitioned for histological analysis (H&E staining after methacrylate embedding), histochemical biomarker assays (lipofuscin accumulation, neutral lipids, lysosomal membrane stability), and biochemical measurements. Enzyme activities of catalase (CAT) and glutathione S-transferase (GST) were quantified in liver and muscle homogenates using spectrophotometric assays and normalized to protein content. Both otoliths were extracted for age determination, dried, embedded in resin, and microscopically examined under variable light intensities to identify annual growth rings. The resulting dataset integrates biometric data, liver pathology, histological and histochemical biomarkers, enzyme activity profiles, and otolith-based age determinations from dabs collected at munition-affected shipwrecks and a reference site. It provides a standardized and comprehensive resource to evaluate the potential toxicological effects of World War I munitions on marine fish populations in the North Sea.
In der deutschen Nord- und Ostsee liegen tausende von Schiffswracks, von denen viele Wracks von Kriegsschiffen aus den Weltkriegen sind. Diese enthalten oftmals noch Munition und Treibstoff, so dass sie eine potentielle Quelle von Schadstoffen und Ölverschmutzung darstellen. Der vorliegende Bericht informiert über Arbeitsschritte zur Bergung von gefährlicher oder wassergefährdender Ladung aus Schiffswracks aus den zwei vergangenen Weltkriegen, zu Wrackdatenbanken und gibt Beispiele für erfolgreiche Bergungen. Auf dieser Basis kann eine Strategie und ein Handlungs- und Leitfaden zur systematischen Vorgehensweise bei der Identifizierung und Bergung solcher gefährlichen Ladungen aus Schiffswracks für Behörden und Bergungsunternehmen aufgestellt werden. Veröffentlicht in Texte | 103/2023.
This dataset contains results from a field-based exposure study assessing the biological effects of submerged munitions on the marine bivalve Mytilus spp.. Mussels were collected from Sylt Island (North Sea) and exposed at three historic munition wrecks: SMS Mainz (Germany), KW58 Hendericus (Belgium), and UC30 (Denmark). At each site, mussel cages were deployed directly on or near the wreck structures for several weeks. After recovery, mussels were assessed for mortality and dissected for histochemical and biochemical analyses. Tissues (gills, mantle, and digestive gland) were examined for histological biomarkers including lipofuscin, glycogen, neutral lipids, as well as sex and gonadal maturity. Enzymatic activities of catalase (CAT) and glutathione S-transferase (GST) were measured spectrophotometrically and normalized to protein content.
Der vorliegende Bericht dient der Informationssammlung und Zusammenfassung in Bezug auf die Bergung von gefährlicher oder wassergefährdender Ladung aus Schiffswracks aus den zwei vergangenen Weltkriegen. Auf diese Weise soll die Grundlage für die Aufstellung einer Strategie zur systematischen Vorgehensweise bei der Identifizierung und Bergung solcher gefährlichen Ladungen aus Schiffswracks geschaffen werden. Durch weitere Vertiefung und Detaillierung kann in einem Folgeprojekt ein Handlungs- und Leitfaden ausgearbeitet werden, der für Behörden und Bergungsunternehmen verwendbar ist. Quelle: Forschungsbericht
ARROWS proposes to adapt and develop low cost autonomous underwater vehicle technologies to significantly reduce the cost of archaeological operations, covering the full extent of archaeological campaign. Benefiting from the significant investments already made for military security and offshore oil and gas applications, the project aims to demonstrate an illustrative portfolio of mapping, diagnosis and excavation tasks. ARROWS approach is to identify the archaeologists requirements in all phases of the campaign, identify problems and propose technological solutions with the technological readiness levels that predict their maturation for exploitation within 3-5 years. The individual technologies are then developed during the course of the project using agile development method comprising rapid cycles of testing and comparison against the end user requirements. To ensure the wide exploitability of the results the requirements are defined and the solutions are tested in two historically significant but environmentally very different contexts, in The Mediterranean Sea and in The Baltic Sea. Both immediate, low risk and long term, high risk developments will be pursued. In particular: - Fast a low cost horizontal surveys of large areas using customised AUVs with multimodal sensing. - Fast and low cost semi-automated data analysing tools for site and object relocation - High quality maps from better image reconstruction methods and better localization abilities of AUVs. - Shipwreck penetration and internal mapping using small low cost vehicles localising using fixed pingers. - Soft excavation tool for diagnosis and excavation of fragile objects. - Mixed reality environments for virtual exploration of archaeological sites. - Monitoring of changes via back-to-the-site missions. The ARROWS consortium comprises expertise from underwater archaeology, underwater engineering, robotics, image processing and recognition from academia and industry.
Nahe der Aleuten-Inselgruppe in Alaska lief der malaysische Frachter "Selendang Ayu" auf Grund und brach auseinander. An Bord befanden sich etwa 1,8 Millionen Liter Schweröl (IFO 380) und 70 000 Lieter Schiffsdiesel. Ein Wintersturm und der schlechte Zustand des Schiffswracks behinderten die Bergungsarbeiten. Der mittlere Tank zerbrach und etwa 160.000 Liter Schweröl sind sofort ins Beringmeer ausgelaufen. Die gesamte ausgelaufene Ölmenge bleibt zunächst ungewiss. Das Gebiet des Nordpazifiks und des Beringmeers ist der Naturpark Alaska Maritime, Lebensraum von bedrohten Seevögeln, Seelöwen, Robben, Seeottern und Walrössern. Erst vor 15 Jahren lief unweit die Exxon Valdez auf Grund und verursachte eine Katastrophe mit irreversiblen Folgen.
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