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axolotl

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About axolotl

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  • Location
    San Diego
  • Interests
    Sailing, Camping

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  1. Old bronze struts can break due to galvanic corrosion, the warning sign is a pinkish color. My '70s boat has a strut design which is quite thin and many sister boats in the 770 boat production run have had their strut break due to corrosion. Due to the way the strut is imbedded into the hull it's a several thousand dollar+ repair. Cheap insurance is to mount two button zincs on the strut, and scrupulously maintain them. The shaft zinc doesn't protect the strut because the cutlass gland insulates the strut from the shaft.
  2. Got booted years ago even though I was friendly and had spent $30USD to phone him when he was in American Samoa.
  3. Not true. There is the South Atlantic Anomaly where the magnetic field is up to 50% weaker than elsewhere but there's still plenty of field strength for magnetic compasses. The rest of the Southern Hemisphere's magnetic field is as strong as the Northern Hemisphere's. You may be talking about the fact that a compass set up for the Northern Hemisphere won't work well in the Southern Hemisphere. What happens to the compass needle is that it becomes unstable, wanting to dip a great deal but unable to do so. Compasses are specific and pre-set for whichever hemisphere they are to be
  4. Beware. I was a ski instructor for a few years in my youth and *all* our equipment & outer clothing was supplied gratis as there's no better advertising than pasting it on an instructor's back. In fact, when it came to skis the manufacturer would pay the ski school for exclusive rights to supply our skis for the season.
  5. Woopsie, I missed it's a 14' catboat.
  6. Nope, FG b/carbon battens can be quite thin but the Velcro leech pocket can be quite wide for maximum compression when inserting them. Believe me I can insert the battens with nearly no compression or push really hard on the Velcro stuffer and affect mainsail trim. Of course the reverse is useful, shove the stuffer between the Velcro an pull on the string and you can easily get the batten out.
  7. Nowcasting is the shizzle for near shore can racing (2-6 hours). PredictWind, SailFlow and Blue Sky use local sensors to fine tune the regional forecast in a particular location. Blue Sky is especially useful for backpacking/camping because you give them a precise LAT/LON and they dial in your elevation and local terrain (mountains/valleys) for a short term (48 hour) prediction. For example, should I stay at 5,000' and camp, or camp up the Jeep road @ 10,000' for a bivouac with a summit push the next day? Blue Sky will predict 40°F, light rain & 10mph winds at the 5,000 site and h
  8. I have one. Definitely a batten loader for velcro style batten retainers, although primitive wood instead of hi-tech fiberglass. Allows you to control/adjust batten compression from none to high. North Sails Instructions
  9. Depends on your locale. In some locales forecasting more than 24 hours out is notoriously difficult, while in others the 7 day forecast is remarkably accurate 80%+ of the time. Take San Diego for example. If you predict light and variable until 10:00am, then 8-12knts from the WNW, veering to NW as the day passes, then dying to light and variable near sunset, you'll be right over 50% of the time.
  10. Um, that's 2 grams of tritium in 1.25 million tons of water. Do the math. It's less "contamination" than is permitted in domestic water supplies. Calling bullshit on the Japanese because they're engaged in a coverup for expedience is also bullshit. Many international nuclear regulatory agencies are closely monitoring Japan's plan to discharge the water into the ocean and agree it's going to be harmless. I assure you Japan is being completely honest and transparent. Note that removing other more serious radionuclides from the effluent is going to cost Japan many billions and may take
  11. Total bullshit. The planned release of two grams of tritium off the coast of Japan will be undetectable at American coasts, and although will be detectable at the outlet pipes in Japan will be below safe drinking water standards. Fukushima radiation was detected in the US soon after the meltdown in the first month but it was all atmospheric and insignificant compared to the amount of Caesium-137 released, at Fukushima around 1/50th of the fall out of nuclear weapons tests and 1/5th that released at Chernobyl. Agreed US coastal pelagic fish radionuclide levels detectibly rose a five years
  12. The planned Fukushima wastewater release meets drinking water standards; the tritium is now diluted to less than 1,500 becquerels per liter, one-40th of the concentration permitted under Japanese safety standards and one-seventh of the WHO's guideline for drinking water. The American limit is calculated to yield a dose of 4.0 millirems (or 40 microsieverts in SI units) per year. This is about 1.3% of the natural background radiation (roughly 3,000 μSv). In fact, a Japanese official did drink the contaminated water only 9 months after the meltdown (Press Conference vid), and its radioactivi
  13. Because there's only 2.1 grams of tritium in the 1.25 million tons of stored water. Tritium could be separated theoretically, but there is no practical separation technology on an industrial scale. If separation were possible, the tritium would only be worth $60,000USD. Accordingly, a controlled environmental release is said to be the best way to treat low-tritium-concentration water. In fact, water containing tritium has been normally released from nuclear plants for many decades under controlled, monitored conditions the US NRC mandates to protect public health and safety.
  14. The ultimate solution for stray current corrosion protection from your poorly wired dock or marina neighbors. Also will prevent your boat from ever causing electric-shock drowning Heavy and costly though. Hubble makes a 60a isolation transformer that would suit your situation, only $2,000 and weighs 250 pounds: Hubble IT With the optional ISO-Boost module which handles brownout shore power voltage drops of up to 12.5% it'll cost $7,000. I've got a 20a ACME isolation transformer for my modest shorepower needs, about 40 pounds and a few hundred bucks when I installed it in the earl
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