Common use of Table 5 Clause in Contracts

Table 5. 2 shows how different methods of in-situ preservation mitigate against specific threats. For example, geotextiles may be used in different ways: as a layer placed between the sediment and the archaeological objects, or as a barrier method, wrapping objects or a structure. These different uses mean it may be effective in different scenarios. The rubber sheeting method that was used on the Stora Sofia in Sweden represents various methods that cover a site, but which do not actively capture sand. These kinds of methods should be used in combination with, for example, additional sand deposits. 125 See, for example, the devastating effect of the Teredo navalis on the wrecks in the Oostvoornsemeer. ▇▇▇▇://▇▇▇.▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇.▇▇/magazine/MP03/ MP03_05.1.htm (accessed 30-01-2017). 126 On the ▇▇▇▇▇▇▇ ▇▇▇▇▇, the Stirling Castle (wrecked 1703), and in the Southern Delta, the Roompot (wrecked 1853). Both are wrecks that have begun protruding from the seabed due to sand shifts. They belonged to the best preserved sites in northwestern Europe, but have been deteriorating rapidly over the last couple of years. Another wreck that is well preserved, with the boards still standing at least 3 metres is the OVM 14. This wreck, which lies at 30 metres depth in the Oostvoornsemeer, is now under threat of being destroyed by the Teredo navalis, which has been reintroduced into the lake due to the salinization of the water. 127 See Chapter 3. 128 See, for example, the natural conditions around the well-preserved shipwrecks in the Baltic Sea such as the Ghost Wreck or those in the Black Sea. 129 See Chapter 3 on mitigation against multiple threats.