The club’s under-14s lifted the Hampshire RFU Vase with a 31-24 victory over Farnborough at Rugby Camp.
Tries came from Corben Hibbard-Chapman (2), Bertie Southern, Rhys Cronin and Josh Witt. Reggie Duggan added three conversions.
Portsmouth under-13s won the Hampshire Shield with a 15-10 victory over Tottonians.
Completing a trophy treble, the club’s under-12s won the Plate at a Hampshire tournament held at Winchester RFC.
Victories over Totton (5-1), Romsey (9-0) and Havant (4-2) and a5-4 defeat to Wimborne saw Portsmouth finish second in their pool. In the Plate semi-final they beat Alton 2-1 before defeating Gosport & Fareham by the same score in the final.