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About MartinRF

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    Stockholm, Sweden

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  1. Kim Klaka used to hang out on rec.boats on Usenet. He is (used to be?) a researcher at an institute or uni in western Australia. Lars Larsson used to be a hydrodynamics professor at the university I got my degrees at (*). My brother was one of his PhD students. My brother met Kim Klaka during a trip down under in 1995. Now this pops up here. Small planet /Martin *) My boat was built in the workshop of the marine engineering department of that university. Usenet: https://en.wikipedia.org/wiki/Usenet
  2. Real hydrodynamists in white lab coats: http://web.mit.edu/hml/ncfmf.html Boundary layers: https://techtv.mit.edu/collections/ifluids/videos/32603-fundamental-boundary-layers /Martin
  3. That was a good start of the day and week. Now I have to bicycle to work. /Martin
  4. Sea-speed and Hempel SilicOne mentioned so far. Sea-speed is not available where I live as far as I know and SilicOne seems to be fased out and replaced by Hempaspeed TF. Anyone with experience of Hempaspeed TF? It is said to be less complex to apply and hard rather than soft. /Martin
  5. Very interesting discussion. I am currently at this stage: This is just testing to see how hard it is to remove the old stuff. Sooner or later I will have to re-do the antifouling from the ground up. Probably not this time as I am running out of time and would like to do this thoroughly including some filling and long-boarding. I gather from what I read here that a silicone-based system may be a good fit for me but there is no easy going back. /Martin https://www.reflectometrist.eu/
  6. Water skis? Tonight's temperature is not typical and sea ice is melting. https://www.smhi.se/oceanografi/istjanst/produkter/sstcolor.pdf /Martin
  7. Over here daylight saving just started and the nearby airport reported -8 C tonight. But, yes, sunny and drifty. /Martin (need to wait a little before I can apply that coat of epoxy to my decks...)
  8. MartinRF

    UV Damage

    Having watched this happen to my clear coated decks my conclusion is that the UV filter is not good enough to stop the epoxy below from breaking down. It only slows it down and eventually the bond between epoxy and clear coat gives up. The clear coat flakes off. Wait long enough and the wood below the epoxy laminate is affected enough for that bond to break. This never happens where I have paint on top of the epoxy. Wood-epoxy cat. 35 years in Sweden so less UV than you have. https://www.reflectometrist.eu/ I am re-doing the clear coat on the decks this spring. I am scraping off the
  9. 39 years ago I took this photo between two winter storms. /Martin
  10. Here is a simple alternative. http://www.katiekat.net/Cruise/Cruise2003EPhotos/JibClew3.jpg /Martin
  11. I have browsed that report a little and it looks like an interesting read. I wonder if there is something like that for Scandinavia... More on geology: Some years ago I stumbled on this lecture: /Martin
  12. Link to Peter Balance's report: https://www.geotrips.org.nz/downloads/Ballance_NZ_Geology-V2.pdf /Martin
  13. Live music? I mean, Händel's Water Music... Many moons ago (late 1970s) I sailed some on a school ship, this one: On one occasion we ha teenage girls as crew/pupils. Some of them knew each other already. They sang in the same choir... /Martin
  14. Don't use Facebook! Problem solved. /Martin
  15. Earlier this week I learned that even George Orwell sported a toothbrush mustache for a while. I don't know who those guys are, apart from my grandfather that is. /Martin
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