As you can see from the above image, the hull had developed a lot of dirt and mould while exposed to the elements outside the house. The first priority was to hire a couple of contractors to power-hose the deck, sand back the antifoul and generally restore some sort of life to the paint job.
They told me the name of the weird concoction they used - I should have written it down. I think it’s called Roklore but Google thinks otherwise. Apparently painters use it to clean pebble-dash from the outside of houses, prior to painting. If you know, leave a comment… Please!
Whatever it is, it’s effective. I don’t have a recent photograph of the deck, but I will add one so you can see the transformation. It’s quite awe-inspiring. The deck and hull look like new.