Naval warfare has not been widespread during the last fifty years. However, some recent armed conflicts involving naval warfare have shown the inadequacies of certain aspects of the existing law, which has not seen any codification since 1949. The present state of the law of naval warfare was evaluated in the early 1990s by a group of international experts, scholars, naval officers and ICRC lawyers. The working group drafted the "San Remo Manual", which, although not legally binding, provides a clear statement of existing law and practice.