1:20 SCALE - FOILS APRIL 2024: ELIZABETH SWANN
Dig for gold with our A - Z or set sail for HOME
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APRIL 26th 2024 - We finally reached the point in design and manufacture, were we could mark out the position of the foils in relation to the superstructure and hulls. This 1:20 scale model, will be over 2.8 meters long and weigh over 29 kilograms (64lbs). Thus, it will be a two man job getting to events and launching the vessel. Or, setting up a stand. Leo is the Youth Project Lead, an engineering student at Bexhill-On-Sea college.
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APRIL 24TH 2023 - Leo is seen here offering up an aluminium fold, to check for length in relation to the deck, which is covered in solar panels. Leo is interested in boat design and practical metal working skills. In the background you can see a solar catamaran design that was tested a long time ago, in the development of the present trimaran design. We are hoping to have this model ready for another local United Nations event in November. So, we have our work cut out.
It is very important to measure carefully. We work to a tolerance of around 0.25mm. But in practice, where there are folds, 0.5mm is usually acceptable with a little fettling at the joins. In the background you can see a SWATH design that was tested well before the Elizabeth Swann design hit the drawing board. The submerged twin hull concept proved to have a higher drag than expected, and it was difficult to trim. The radio controlled model had four tanks that could be flooded or pumped out, for trim and ride height adjustment for different sea conditions.
SAILING COMPETITIONS
Thomas Coville holds the world record of 49 days and 3 hours for sailing solo around the world in the trimaran Sodebo Ultim, finishing on December 25, 2016. The previous record was set by Francis Joyon on January 20, 2008. The 51-year-old Frenchman circled the planet alone in 57 days, 13 hours, 34 minutes, 6 seconds in a trimaran. He beat British sailor
Ellen
MacArthur's record set in February 2005 for which she spent just over 71 days at sea.
- More complicated geometry and large size per unit of cargo carried, which makes docking more difficult than for a catamaran or monohull.
APRIL 2024 - Between February and March we increased the diameter of the base cradle and original Jig base and tower locator clearances. Having calculated the diameter of the larger hull tubes, it was a relatively simple matter to cut larger semi-circles in the wooden Jig. But this was very time consuming. In April, having re-sealed the cut wood, we were able to progress to the vessel itself. In this picture you can see we have, sealed, primed and painted the superstructure, onto which the aluminium aft and helm sections will be fixed. Please note that these modifications to the scale model, do not increase the estimated build schedule of the full size craft. Previously, Leo (Youth Lead) had tried his hand at spray painting on the AmphiMax model, before conducting remote controlled trials.
The Research Vessel Triton is a trimaran vessel owned by Gardline Marine Sciences Limited and a former prototype British warship demonstrator for the UK's Defence Evaluation and Research Agency (later QinetiQ). She was built as a technology demonstrator ship for the Royal Navy's Future Surface Combatant, and has been used to both prove the viability of the hull-form and as a trials platform for other QinetiQ innovations. The ship was used by the Australian Border Force's Marine Unit, and was for a time moored in the River Fal near the King Harry chain ferry. Up until July 2019 she was moored on the River Yare, Great Yarmouth in Norfolk, England.
NAVAL TRIMARANS
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These are some of the main components of the 1:20 scale Elizabeth Swan technology demonstrator. We applied for part funding for this project from the Dti's TRIG marine technology competition. But, they said they were concerned about cleaning of the panels of salt caking at sea, as applied to ships. We have solved that problem, and were prepared to share that information in return for helping us with development costs. We considered the automatic furling and sun tracking to be an important feature for applications like cargo ships, cruise liners and ferries - not so the UK government. But then, we suppose that most governments around the world are in a pickle. Looking for ways to power ships to meet with the IMO's zero targets for 2100 without much modification of hulls and decks. The target for 2030 is a 40% reduction in GHG emissions. The Elizabeth Swann is a clean-sheet-of-paper design. Not flavour of the month with fleet operators, as well we appreciate. But then progress is sometimes financially painful. In the commercial world it is all about profits. Now, the planet gets a look in, but still has to wait for existing ships to depreciate. We have suggested a scrappage scheme is applied to induce ship operators to change out hulls earlier, as was applied to cars some years ago.
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Dig for treasure with our A - Z or set a course for HOME shipmates
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