Navy could deploy unmanned maritime security ships that can self-navigate, avoid obstacles by end-2021 Toggle share menu Advertisement Navy could deploy unmanned maritime security ships that can self-navigate, avoid obstacles by end-2021 The Navy demonstrated how its new maritime security unmanned surface vessel (USV) operated autonomously in the waters off Changi Naval Base. (Photo: Marcus Mark Ramos) 01 Mar 2021 02:50PM) Share this content Bookmark SINGAPORE: The Republic of Singapore Navy (RSN) could deploy four unmanned surface vessels (USV) for maritime security by the end of this year, depending on the progress of final sea trials. Once operational, the USVs will conduct round-the-clock patrols, investigate, as well as intercept suspicious vessels in Singapore waters. They are equipped with long-range loudhailers, strobe and search lights, as well as a 12.7mm gun.