Scheduling is not usually applied to underwater sites although historic wrecks can be protected under the Protection of Wrecks Act 1973, although three maritime sites have been designated as scheduled monuments. In Scotland new powers for protection of the marine heritage, better integrated with other maritime conservation powers, have been given by the Marine (Scotland) Act 2010. It is intended that the marine scheduled monuments will be protected by this new Act. The Historic Environment (Amendment) (Scotland) Act, which amended the 1979 Act, was passed into law in 2011.