MartinRF
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Posts posted by MartinRF
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5 hours ago, Black Panther said:
That was a good start of the day and week. Now I have to bicycle to work.
/Martin
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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
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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
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2 hours ago, aardvarkash10 said:
Doors wide open, little breeze, just coming up 8pm, sunset was 7.20pm, and its 24 degrees...
I am concerned about our ski season this year with sea temperatures like this.
Water skis?
Tonight's temperature is not typical and sea ice is melting.
https://www.smhi.se/oceanografi/istjanst/produkter/sstcolor.pdf
/Martin
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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...)
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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 old stuff this weekend. Most of it comes off with little effort. Not so where it is in the shade.
This is the third time I do this, if memory serves.
Two-pot paint also breaks down but is a (much) slower process.
/Martin
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39 years ago I took this photo between two winter storms.
/Martin
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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
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Link to Peter Balance's report: https://www.geotrips.org.nz/downloads/Ballance_NZ_Geology-V2.pdf
/Martin
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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
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Don't use Facebook!
Problem solved.
/Martin
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2 hours ago, 44forty said:
um yeah …who’s that chap with a death grip on the tiller ?
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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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
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On 18/09/2021 at 10:22 AM, MartinRF said:
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
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 does not elevate this jacket to proper foul weather gear level again.
/Martin
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22 hours ago, The big T said:
Have a set of Musto which has done a Volvo - hand me up from my son. Good as gold apart the neoprene collar and ends of sleeves. And I've thrashed it since then - about 6 years more. Good gear. Simple though - more a smock with a front pocket and no bullshit stuff.
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
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Last time I heard about his, which was many moons ago, they got custom kits, not what is sold over the counter.
/Martin
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8 hours ago, DoT said:
Actually, it must have been July. I was there a month, arriving the day before midsummer - bonfire night.
For a country covered in forest they really love the open fire.
Day before midsummer must be June.
Fire bans are in force when it is deemed too dry.
/Martin
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9 hours ago, DoT said:
I've sailed in Helsinki - in August though not January. Very nice blocks of granite everywhere. Islands set up with DIY barbeque hut and sauna.
Very long days. You could go for a day sail at lunchtime and still be out 10 hours before sunset.
You think the days in August are long?
That is when people here start to lament the shortening of the day.
/Martin
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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
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13 hours ago, Fogg said:
What do the Swedish fishermen use up there?
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 weather gear was also of the PVC-coated variety. Very well designed when it came to the protection although I don't remember any wrist seals so maybe not ideal for sail racing. Neither do I remember any provisions for ventilation but then it was more important to stay warm and dry while on look out duty while we were bouncing from wave top to wave top in a winter storm. Cold war tech was not always super sophisticated but powerful engines were definitely in fashion...
/Martin
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9 hours ago, B00B00 said:
Similar to mine! (Sorry for the thread drift)
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
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I guess this poll is not for me. At N59 we don't usually go sailing in January
/Martin
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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
Careful with that Silicone AntiFoul
in MarineTalk
Posted
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