Closer to launching

The last month has seen significant progress with Team Britannia‘s round the world powerboat Excalibur. Not only are the engines in place, but we’ve had a trial fitting of one of the jets in order to get precise measurements for the way they fit to the transom. And the complex skeleton of aluminium framework, exposed for so long, is now hidden from view with all the deck plates having been welded into place. The 3/4 inch plywood floor has been fitted in the wheelhouse, which is also taking shape, so there is now no longer an uninterrupted view from bow to stern. The upper section incorporating roof and flybridge has already been fabricated, and will be lifted into place very soon.

What hasn’t been shown photographically is the system of pipes and pumps interconnecting the six huge fuel tanks. Apart from delivering fuel to the engine room ready to be mixed with the Clean Fuel emulsifier and water, there’s another purpose. The attitude of a powerboat in the water is generally controlled by trim tabs acting as trailing edge flaps on the underside of the hull at the stern. They work well, but in so doing, they introduce extra drag. Excalibur will be trimmed rather the way Concorde was in flight, by pumping fuel from one tank to another to distribute the weight.

We also hosted our first public open day on 30th June, when around 150 people visited the boatyard, some travelling from as far away as Scotland. They included partners and supporters, enjoying a close-up look at the boat and chatting to members of the crew, all in glorious sunshine, with the barbecue and bar kept pretty busy throughout. We were delighted to welcome Portsmouth North MP and Secretary of State for International Development Penny Mordaunt, and the media were there too, including Portsmouth News, Express FM and That’s Solent News.

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