At noon, Royal Navy, commercial and private vessels joined those around the country to sound their sirens.
Last month, the UK Chamber of Shipping extended an invitation to all ship owners to part in the salute, sounding a simultaneous long blast on their horn or whistle.
Portsmouth man found fatally wounded in Edinburgh is named as Wayne Elliott, 53
Portsmouth Traffic: M27 between junctions 11 and 12 closed throughout August amid footbridge repairs with A27 diversion in place
Southsea seafront incident: Police update after man found 'unresponsive'
Multi-vehicle collision on the A32 near Swanmore leaves one driver injured as police warn of congestion
Red Arrows: Exact time famous RAF jets will fly over Hampshire this week including Odiham, Alton, Bordon and Petersfield
This video was taken by Tony Weaver on the Gosport side of the harbour with the Gosport ferry in the foreground.