The Netherlands will protect underwater cultural heritage by the ratification of  the international UNESCO convention on the Protection the of Underwater Cultural Heritage. Minister Jet Bussemaker (Education, Culture and Science) and Minister Bert Koenders (Foreign Affairs) officially announced today that the Netherlands intent to ratify this treaty. This convention improves the protection of underwater cultural heritage through international cooperation worldwide.

https://www.government.nl/ministries/ministry-of-education-culture-and-science/news/2016/05/19/the-netherlands-will-protect-the-underwater-cultural-heritage