We ended the blog yesterday with the problem of the salination of the Oostvoornse meer. Oostvoornsemeer is now a freshwater lake and the wrecks are a popular destination for the thousands of divers who take to the deep here every year. The easy diving conditions, good visibility, and the interesting wrecks make this one of the most frequently visited diving spots in the Netherlands.
After years of desalination, the salinity in the lake is being increased again in the hope of improving the water quality and biodiversity. However, this has also reintroduced one of the greatest threats to wooden shipwrecks – Teredo navalis, the naval shipworm. The shipworm damages the wood by eating it. To investigate the salination and the reintroduction of the shipworm, multibeam sonar, water quality research, underwater observation and sampling are being used to obtain the clearest possible picture of the current spread of shipworm, and the imminent threat. During this fieldwork campaign we want to assess the speed of degradation of the wooden shipwrecks by the shipworm. The municipality of Westvoorne is bringing together stakeholders to discuss how to manage the underwater cultural heritage in relation to the vision that is being developed for the lake. We are providing the information for the discussion and the decision making process.
Today a filmcrew from the Dutch television came by to film for a program called ‘De Kennis van Nu’ (Current Knowledge), presented by Diederik Jekel. The program focuses on the underwater archaeological research that is being conducted on the shipwrecks at the Oostvoornse meer and the implementation of new archaeological research techniques. We will keep you updated on the airing time and date of the television programme! Tomorrow we will tell you about the implementation of those new archaeological research techniques. So check it out!
Robert de Hoop (intern Maritime Program)
Martijn Manders (Head of the Maritime Program)