The Perwira is a Singapore-built Malaysian PX Class police boat of 86.4 tons displacement launched in the late 1960's. The Perwira is powered by two Mercedes-Benz MTU 820 Db 12-cylinder diesel engines providing a top speed of 25 knots and a range of 550 miles at 20 knots. The Perwira carries a crew of 15 and is armed with two Oerlikon 20 mm machine...