Biter was one of many vessels taking part in Portsmouth's D-Day 75 commemorations that day

Builder: Watercraft Ltd, Shoreham-by-Sea
Launched: October 17th 1985
Commissioned: January 25th 1986
Homeport: HMS Eaglet, Liverpool
Status: In active service

Class: Archer-class P2000-type patrol & training vessel
Displacement: 54 tons
Length: 68 feet
Beam: 19 feet
Draught: 5 feet 11 inches
Propulsion: 2 shafts, Cat C18 ACERT diesels, 873hp
Top speed: 14 knots (in service), 45 knots (hull design, but limited due to the engine fitted)
Range: 550 nautical miles
Crew: 18 when training, 12 when operational
Sensors & processing systems: Decca 1216 navigation radar
Armament: 1 Oerlikon 20mm cannon on fo'c'sle (fitted for but not with), 3 general purpose machine guns

https://www.vesselfinder.com/vessels/HMS-BITER-IMO-0-MMSI-235009860