MartinRF

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

That was a good start of the day and week. Now I have to bicycle to work. /Martin

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

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/

Water skis? Tonight's temperature is not typical and sea ice is melting. https://www.smhi.se/oceanografi/istjanst/produkter/sstcolor.pdf /Martin

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...)

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

39 years ago I took this photo between two winter storms. /Martin

Here is a simple alternative. http://www.katiekat.net/Cruise/Cruise2003EPhotos/JibClew3.jpg /Martin

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

Link to Peter Balance's report: https://www.geotrips.org.nz/downloads/Ballance_NZ_Geology-V2.pdf /Martin

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

Don't use Facebook! Problem solved. /Martin

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

Bought my jacket in 2012 so more than 6 years old but it has not seen heavy use. But the real reason for posting again is to share this photo of my maternal grandfather trying out his new boat with some friends. I don't have an exact date, sometime in the second half of the 1930s I think. Not quite dressed like we are used to now /Martin

When you want a deluge they are far and few between... So I did some preliminary testing in my shower cabin: Better but no cigar. The shoulder part still leaks some so I opted for some reinforcement using a spray-on product. Before that I also applied some heat by means of ironing at lowest power. Both seemed to help. Tonight we got some rain, not heavy though, and I took a longish walk. OK, much better. It will keep me dry in non-demanding conditions, at least for a while. Inspecting the inside at home I see water is still coming through but much less. So Nikwax helps but it do

Right, I have pondered this smock thing for a while. Probably a better choice for me and my boat and my kind of sailing than a jacket. /Martin

Last time I heard about his, which was many moons ago, they got custom kits, not what is sold over the counter. /Martin

Day before midsummer must be June. Fire bans are in force when it is deemed too dry. /Martin

You think the days in August are long? That is when people here start to lament the shortening of the day. /Martin

No, I am not that old. Those MTBs were retired well before my time. One of these: Also retired. The remaining ones are used for taking paying guests on joy rides in protected waters in summer. There are tons of amateur videos on youtube. /Martin

I am not up-to-date with what they use today but when building my boat my building buddy was involved in a research project looking into the work environment for fishermen. His part was about sea-kindliness and how ship movement wore down the bodies of fishermen. Another group was looking into foul weather gear. They did look into new, high-tech materials but soon dismissed them. The solution (back then) that worked best was the PVC-coated stuff with good design taking care of ventilation. I did my military service in the Swedish navy a couple of years prior to that and the navy foul weat

My fault, sorry Hint: the Gulf Stream helps a lot. I have a colleague from Tromsö located at N69 plus change. Still ice-free. I don't think Norway has any icebreakers. In the Bay of Botnia and the Gulf of Finland icebreakers is a must have most years. /Martin

I guess this poll is not for me. At N59 we don't usually go sailing in January /Martin

Banned according to the care label. I have destroyed another jacket by not studying the care label (until afterwards). That time a washed in 40 C (label said 30 C) and tumble dried (label said not). I don't which part of this killed the waterproofing. Right now I am subjecting this jacket to to a mild (35 C) heat treatment. Then I hope for some real rain to test it. /Martin