The Marine Navigation Act 2013 (c. 23) (introduced into Parliament as the Marine Navigation (No.

2) Bill) is an act of Parliament that amends various existing legislation, in particular relating to pilotage and the powers of harbour authorities, ports police, and the general lighthouse authorities.

The act is the result of a private member's bill promoted by Sheryll Murray (the Conservative MP for South East Cornwall) and Baroness Wilcox (a Conservative peer).

Much of its content has its origins in a draft Bill published by the Department for Transport in 2008.

[2] The act achieved royal assent on 25 April 2013.