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Ray T

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Ray T last won the day on September 2 2016

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  1. CRT's Latest Icebreaking Technology

    CRT's latest towpath gritting machine, borrowed from the Local Authority as it doesn't have its own.
  2. Auntie Wainwright's 12 Days of Christmas

    I put in a bid of £10 for the bank thingy.
  3. Auntie Wainwright's 12 Days of Christmas

    Jess, sorry to be a pedant but that loco is Bittern. Same class as Mallard, LNER A4. Bittern's No is 4464, Mallard's, 4468.
  4. Auntie Wainwright's 12 Days of Christmas

    Time to resurrect this again.....
  5. Extant full length butty's and horse boats

    See page 19 of the recently published book The Twilight Years of Narrow Boat Carrying. It is of Widgeon & Snipe, large Northwich and smaller FMC butty. "Clearly these boats were not designed to work together, but the latter days of canal carrying involved all sorts of mismatched pairings."
  6. Canalworld - Fundraising

    CWDF mods / staff meeting including said elephant.
  7. Canalworld - Fundraising

    Angie used to manage the finances and a good job she did too. She had to give up for valid reasons. So far no one else has offered to fill the post. It has been advertised. Remember all the folk who help are volunteers. Any volunteers?
  8. Extant full length butty's and horse boats

    These? Although I don't know the history of them, but both are hydraulically driven. I know Birdswood is also used as a horse boat for some passenger trips. There is also the wreck by the winding hole at Wolfhampcote. Which butty is that? ETA just noticed Birdswood is in your list.
  9. Thats cos I put my CRT press releases in Waterway News section not General boating.
  10. Canalworld - Fundraising

    If you donate by PayPal you should get an email thanking you, I do. This shows if the donation was successful.
  11. Auntie Wainwright's 12 Days of Christmas

    Cos its the main man. £10.00 for the bank.
  12. Historic Boats for sale online

    When I used to dinghy sail there was a product available called "Go fast white" paint. This was painted on the hull of dinghy's at waterline level and the surfaces of the hull below the water. This paint didn't have a smooth finish but a slightly rough one. The idea was that water "sat" in the tiny indentations so any water flowing across the hull was water against water, i.e. less friction, as opposed to water against gloss paint. The theory being that a gloss hull would have minute air bubbles adhering to the hull in a similar way to water globules on a polished surface which would disturb the laminar flow. In a similar way could a layer of water adhere to a wooden bottom whereas it wouldn't to a metal one? Just a theory. Yes I am aware that most dinghy hulls are capable of planing whereas a narrow boat hull isn't. Laminar Flow If the surface is super smooth and the water flow slow, then something called laminar flow can take place. Such flow is linear and non turbulent and as the water particles shear far more easily on each other within that laminar-flow area, frictional resistance can be lowered very significantly (say 30-60%) but only IF in fact, laminar flow can indeed be achieved. Whether any particular boat can have laminar flow is a subject for much debate—somewhat similar to 'can a multihull plane?'—but even harder to answer. As always, there are many ifs and buts and it's only likely over a small area of the bow, at very low speeds and with a surface prepared to be 'the least likely to provoke turbulent flow'. Actually, there is some talk that porpoises may develop laminar flow over a fair extent of their bodies as experts look for some plausible explanation of why they can travel much faster than their muscle weight would indicate. Interestingly, they apparently have a skin surface just behind the head, that has microscopically fine ribs that are located not with the flow, but at 90° to it, that are perhaps the secret of how it's achieved. So perhaps we need to paint our underwater bow sections with vertical brush strokes, rather than painting with the flow! :-) I personally think that at speeds under 1.5 knots, a small area of laminar flow 'might' be possible and if so, it would certainly lower resistance at low speed. For ship models that sometimes go to 20' in length, laminar flow is nearly always apparent in the bow area and in such cases, it so upsets the required calculation of resistance that small pins (or the equivalent) are added to the model in the bow area to actually provoke turbulent flow in order to achieve a more realistic resistance prediction for the full size boat or ship. http://www.smalltridesign.com/Trimaran-Articles/Boat-Resistance.html
  13. 7 December 2017 CANAL & RIVER TRUST BEGINS INTERNAL CONSULTATION ON STRUCTURAL CHANGES Following recent changes to its Executive team, the Canal & River Trust yesterday (6th December 2017) began a 60-day period of internal consultation about changes to its internal structures and a significant reduction in the size of its senior management team. At the heart of the proposals to transform the organisation is a change to strengthen the accountability of regional teams, and to shift the current waterway management structure to better face the outside world, so the Trust can engage and influence its partners in the most effective way. Subject to consultation, this would see the Trust move from the current ten waterways to six larger regions, and embed more of the current national teams directly into the new regional teams. Commenting on the news, Richard Parry, Chief Executive, said: “These changes are about re-focussing and simplifying the organisation so that we enable everyone across the Trust to make their greatest possible contribution, to serve our customers and support local communities to enjoy their local waterway. We have to find ways to do more and cost less to ensure a secure and sustainable future for the Trust.” The Trust anticipates making further announcements about the new structures in Spring 2018. ENDS For further media requests please contact: Fran Read, Canal & River Trust m 020 3204 4420 e fran.read@canalrivertrust.org.uk
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