Dixon, who had won two senior medals the week before at the National Cup, scored an impressive 460.20 points for his six dives in the preliminary round and then 234.95 for the three-dive final.
The 16-year-old, who had won the three-metre event on the Sunday, claimed two 10s on his second dive in the final to finish 80 points ahead of his nearest rival in the men’s 16+ category.
His team-mate Owen Weymouth took silver with 154.40 points and Connor West made it an all-Plymouth Diving podium with 143.25.
Plymouth Diving enjoyed a very successful event at their home competition.
Aidan Heslop was in top form in the boys’ B category. He managed a clean sweep of titles.
Heslop triumphed in the platform, three-metre and one-metre events and also took victory in the open high dive final and gold in the three-metre boys’ 14-18 synchro with Connor West.
Plymouth divers were dominant in the boys’ B section, winning eight of the nine individual medals available
Alfie Brown took silver behind Heslop in the platform, three-metre and one-metre competitions, with Joshua Hughes claiming bronze in the platform and three-metre.
Kayleigh Sinclair was another Plymouth diver to impress. She took gold in the girls’ 16+ one-metre and three-metre events.
In the same category, Cody Powell-Tuckett won gold in the platform and 14-18 three-metre synchro with Frances Burdett and took silver behind Sinclair in the one-metre.
Aimee Fishleigh and Alice Burdett were second in the three-metre synchro competition.
Zach Anderson was a stand-out performer in the boys’ E/D category. He won the five-metre platform and three-metre finals and took silver in the one-metre, while also claiming gold in the boys’ 13 and under one-metre synchro with Josh Freeman. Euan McCabe and Alfie Westerman took silver in that synchro final.
McCabe won the boys’ C platform and three-metre events, while also winning silver in the one-metre.
Westerman took gold in the one-metre final and silver in the three-metre and platform finals.
Weymouth, as well as his silver behind Dixon in the men’s platform, also took second in the one-metre and high dive finals and bronze in the three-metre event. He also won a synchro silver with Harry Mason in the 14-18 year-old boys’ three-metre.
There was a gold medal for Evangeline Piper in the girls’ C one-metre event. She also claimed bronze in the platform and was fourth in the three-metre.
Among Plymouth Diving’s other medal winners were West in the high dive, Chrismon Clark in the girls’ B three-metre, Katie Martin in the girls’ E/D three-metre and Ellie Pearce and Lucy Gutierrez in the girls’ under-13 one metre synchro. Iris Schmidbauer was also first girl in the high dive competition.
In addition, Plymouth Diving finished first and second in the team event.
The Armada Cup, which was sponsored by South West Motorhomes, attracted divers from all over the UK.
Crystal Palace, Edinburgh, Southampton, Shamrock, Amersham, Luton, Harrogate, Aberdeen, Star DC, Corby, Southend, Cambridge and Albatross DC all sent teams to the four-day annual competition.