Marchwood is always bad for fouling, but 2016 was a bad year. However, Teal was worse than most boats. The Propspeed had been ineffective on all surfaces except the propellers themselves. We think this is due to the slightly brackish water due to fresh coming down the River Test, probably loaded with nitrates from farm runoff.
Propspeed is supposed to have a life of 2 years, so it was decided to leave it on the props for the 2017 season, but use Trilux on the shafts, P-brackets, rudders and trim tabs.
Trained as Naval Architect. Involved in shipbuilding and shipyard construction/ Worked briefly in aviation. Joined Associated British Ports in 1984 as Business Development Manager. For 10 years until retirement in 2001, Environment Manager at ABP. Has owned several yachts described on this website