The Republic of Singapore Navy has commissioned another two littoral mission vessels (LMV) in a ceremony at Changi Naval Base.
RSS Sovereignty and RSS Unity are the second and fourth vessel of an eight-strong fleet that is expected to be operational by 2020.
Built by ST Marine, the 80-metre vessels displace 1,250 tonnes and are 2.5 times larger than the Fearless-class patrol vessels they are replacing.
They are equipped with advanced radars and sensors, and a 360 degree out-of-window view.
Sovereignty and Unity join the lead ship, RSS Independence, which was commissioned on the 50th anniversary of the country's navy on May 5.