Tracker is one of sixteen 20-metre, 54-tonne P2000 patrol craft operated by the Royal Navy. She is constructed from glass-reinforced plastic. As a "batch 2" vessel, Tracker has a sustainable top speed of 24 knots, faster than her batch 1 sister ships due to her more powerful turbocharged MTU diesels; she can exceed 24 knots in suitable sea conditions. Both Raider and Tracker operate in the force protection role, providing maritime security for high value shipping in the Firth of Clyde, and are armed with three general purpose machine guns.