NZW

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About NZW

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    Antipodean
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    umm ... sailing?

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  1. NZW

    VIRB 360 and instrument data - it works!

    Awesome jarcher, thank you - I made this work this afternoon after struggling with it a couple of months ago and giving up. Tested this evening - full wind etc data all there for the overlaying. Nice one.
  2. NZW

    FP Blink Video

    Looks like it's possible to get boat instrument data on to the virb 360 now:
  3. Shame the 360 doesn't also grab the full GMetrix... surely only a firmware update away ...? (Anyone out there from Garmin reading this ??)
  4. NZW

    Tether clips

    So you'll be looking some something like this ...easy to use clips one-handed, glow in the dark release tab, no knife needed http://www.glowfast.com/product.php?productid=16220&cat=258&page=1
  5. NZW

    What IS Keel Pin Axis Incline Angle?

    No, I've no trouble getting this. I was only referring to the bulb vs hull alignment aspect, and I only chipped in to the thread at all because you'd commented that such misalignment was a 'nasty' issue -- actually rather than being nasty, it really isn't a significant problem, and upwind/reaching it's a Good Thing. Most designers of canting keel boats now see the benefits exceeding the drawbacks for keel pin inclination, which is why many new canting keel designs now have at least some keel pin tilt. Should it be as much as the 5° that the VoR65s have? Maybe not? Cleverer folks than me probably know. I hadn't commented the 'light air disadvantage' issue in the post above, but since I'm here -- from the posts above I suspect moonduster understands this too, but I'll spell it out for others -- it's only a disadvantage in the sense that if you want _full_ leeward cant (and therefore heel to minimise wetted area and keep sails flying), and the pin inclination angle is more than a few degrees, the fin angulation will pull the boat to leeward, decreasing apparent wind and adding a little drag among other things. But that effect is proportional, and enough leeward heel can often be achieved from a partial leeward cant, with a trivial negative effect for the advantage of less hull drag. And if the boat is rolling and you can barely get the sails to set, full cant and and stable sails and being able to move at all still outweighs the disadvantage of the fin angulation.
  6. NZW

    What IS Keel Pin Axis Incline Angle?

    True -- but that's sometimes a good thing, especially going upwind/reaching... With the keel centred, the bulb has no 'tilt' relative to the waterline, but fully canted it does... the lift generated by the slightly nose-out/tail-in bulb (when fully canted and boat heeled, so fin projecting somewhere close to parallel to water surface), more or less out to windward of the hull, pulls the boat to windward, limiting leeway. Trouble getting this? Grab that biz card again, but before you tilt (cant) it between your fingers cut a thin wedge off the top of it. hold the top axis (pin) with the front edge up, so that the bottom of the card is horizontal, and without moving that 'pin angle' tilt the card up like before. Watch what happens to the 'bulb' end as it tilts up... There's probably no benefit to the bulb/hull angle when going downwind (bulb angle would decrease leeway, and nobody minds a little leeway when trying to get down...) but at the sort of speeds these boats are going, when they are fully canted and pressed - apparent wind sailing downwind - probably not a significant hit.
  7. NZW

    Sydney to Hobart 2017

    .. then the keel is still stuck out to one side - where it was all along (no canting keel boat in conditions where a capsize is possible will have the keel centred). The big lump of lead out at one side, likely assisted by the first passing wave, should flip the boat back over fast. If keel operations are not available and the keel is on the 'wrong' side after un-inverting, the boat will lie at a heel angle which would be maybe 20 degrees above flat, if rig and sails still there, well above downflooding angles. If rig broken but attached, maybe 45 degrees? Not nice, but would avoid drownings from inversion. In the '98 incident where 2 perished, one was a heart attack and the other was held under by a lifeline because the boat stayed inverted. That isn't likely to happen with a full canted keel. There are now options like the glowfast tether http://www.glowfast.com/product.php?productid=16220&cat=258&page=1 and/or safety blades for cutting tethers built in to PFDs like the spinlock Deckvests (and presumably others). And, for a broader view, tether-induced drownings aren't restricted to inverted boats: http://www.pbo.co.uk/news/maib-report-morgan-cup-fatality-june-2011-4508 (nb I'm not suggesting that tethers are a bad thing). While I'm at it, I recently re-read the Rambler 100 fastnet 2011 capsize story and reports. For me the most troubling part was that the guys inside who had some time to prepare for a swim out via the companionway nearly drowned trying to get past the lifelines (getting the gear they were wearing, esp PFDs snagged), and being held a couple of feet underwater. For me that's another point in favour of dyneema lifelines, as that particular escape problem would be very easily solved with a knife.
  8. NZW

    Sydney to Hobart 2017

    True... but a Farr 40 IMS boat is nothing like a modern canting keel boat. Even if their main concern is the now very remote possibility of needing to explain themselves to a coroner, time for CYCA to catch up. I'm not an expert... but I'd expect having more than a ton of lead canted out 40-50 agrees off centre, a few metres out, in any kind of wave activity, is extremely likely to help the boat roll back upright or at least sideways pretty fast. The super-beamy open 60s can right themselves by canting alone, even in flat water. And in the conditions that you're likely to roll in, the keel would always be at full cant Much more likely that an old heavy 7ksb has it's keel fall off, after which it won't be coming upright again.
  9. NZW

    .

    You've made your point
  10. NZW

    cool or horrifying?

    Looks like fun. How often do you get to go out in conditions like that? Oh, you need to move to Auckland. The last couple of years have been mentally windy. Or there's Cook Strait. It's sometimes windy and usually cool there. Here's 45+ knots breeze, on the same day the Volvo ocean race restart from Auckland was delayed (too windy), boatspeed average 25 (up to 30) in a 40 footer. Only 2 sails (shoulda tried harder?). Not much horrifying, heaps of cool... And here's 35 feet, going nearly as fast, on the same day ...
  11. NZW

    Smart Watch

    Quatix 5 released a few weeks ago (superseding the 3 from a few years ago...). It's pretty good, I got the 'sapphire' version. Makes the most sense if you have other Garmin gear (controls virb cams etc, as well as autohelm, and streams data from garmin plotters) but a nice watch with good smartphone interaction anyway. Quite a few sailing apps but sadly 3rd party sailing apps aren't able to access the boat data (c'mon, Garmin!).
  12. NZW

    Team NZ

    So far, so good ...
  13. NZW

    Team NZ

    Burle [burl] verb (used with object) to win a competition by such a margin that substantive effort is not required in the later stages (eg not needing to compete in the last races of a sailing regatta as the win has already been secured) Burling [ˈburl ɪŋ] The act of winning competitions with time to spare
  14. NZW

    Sailing Videos ALL Suck

    The Amateurs in NZ do a reasonable job and mostly don't break the OPs rules...
  15. NZW

    Drones for sailing

    And is best to be quick -- upwind in, say, 25 knots, apparent wind 30+, drone ideally would be capable of at least 35 to stay with the boat. You could limit use to less than 15 kts wind, but then you're not filming the interesting fun stuff