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About weightless

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  1. weightless

    Weather Map Definitions

    On the cell phone data so I'm not checking, but IIRC, there is a two way sharing of data between NOAA/NCEP and EC. The US civilian gov and partners, and the US military (eg. NOGAPS) run lots of models with various target audiences many of which are openly distributed. If you're willing to noodle around a bit there are free meso models available for most of US areas of influence. The predict wind models seem pretty good to me and I like their interface. Agree that the US politics are probably not helping NOAA reach their best potential. Last hurricane season their discussions relied more heavily on EMCWF than in the past and they did better than in the past (IIRC). Though to be fair they are all getting upgraded continually. Links to some of the US stuff: http://nomads.ncep.noaa.gov/ https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/numerical-weather-prediction https://www.ncdc.noaa.gov/data-access/model-data
  2. weightless

    required navigation tools

    If by "compact" you mean the smallest volume of books then 208 is not the most compact method. That's just a fact. If you're talking about compactness of the exercise of sight reduction for a given level of precision then you may have a reasonable argument.
  3. weightless

    required navigation tools

    My celestial is more than a little rusty so I don't have an opinion on the "best" method. FWIW, the Commercial Almanac includes sight reduction table, forms and instructions. You don't really need any other books. There are other simplified , long term and or abridged combined ephemeris and reduction books out there, too. I'm sure they're adequate for emergency or recreational work. I carry an almanac and "S" tables on my boat mostly out of habit. I agree that piloting is a far more useful skill and typically a prerequisite to celestial. https://www.amazon.com/2018-Nautical-Almanac-UK-Hydrographic/dp/1937196593/ref=sr_1_1?ie=UTF8&qid=1525466989&sr=8-1&keywords=nautical+almanac+2018&dpID=41CuKHEO08L&preST=_SY291_BO1,204,203,200_QL40_&dpSrc=srch
  4. weightless

    thank you

  5. weightless

    required navigation tools

    +Lots to the protractor. However, with a good protractor you don't need to remember TVMDC. Just set the one you have. Read the other off the dial if you need it. That's one of their many charms. You can get away with surprisingly little astronomy in the most basic of celestial navigation. If you can locate the sun two or three times a day you've meet the LCD of astronomical knowledge. At that level very basic tools will be fine too. A plastic sextant, a horizon, something that keeps time to the second to any degree of accuracy, an almanac and something to plot on will do the trick. I'd gather together some toys and take a noon sight before diving off the deep end of celestial. On the opposite end of the spectrum you might enjoy looking through the sections of the "American Practical Navigator" that deal with astronomy. It's free and full of treasure.
  6. Their plans have been evolving. When last I looked, IIRC, they thought they could take advantage of the Ekman spiral, which describes a theoretical difference between current vectors by depth, by dropping sea anchors into deep water. They're only planning on cleaning up large, near surface flotsam. Initially they were planning on setting anchors in the sea bed but it was pointed out to them that would be a very difficult task in the area of the N Pac gyre. They may have moved on to a new system since last I checked but the news articles I've seen recently suggest they still plan to use some kind of sea anchors.
  7. There's a crunching sound and then your plastic boat is collected and recycled into cheap sunglasses? I hope they'll put lights, radar reflectors and automatic sound signals on it. Given the level of magical thinking involved in this project (off the scale even for TEDx, IMHO), I fear the "plan" is that you'll hear the singing of grateful sea creatures a long way off. You get fair warning and the opportunity to join in the celebrations. That or you'll hear the lamentations of dying animals trapped in this huge, slowly sinking under the weight of it's fouling drift net. I dunno.
  8. I wish them well. It reads like BS to me. Caveat Emptor and all. However, I've been wrong before. I hope I am in this case because the cause is good.
  9. weightless

    E-nav on the cheap

    If the voltage drop / power dissipation are a problem and you don't want to blow fuses you might be interested in this method:
  10. weightless

    Anybody repower with a Torqueedo Pod here

    Yep, we've been through a stack of batteries and have replaced almost all of the other bits too. I think that it would be ideal if the pods sent an error code but continued to work if they flooded. I'm not sure it'd be a great idea to leave all the bits flooded for any length of time. For instance, chipping marine life out of the gears, bearings and motor might get tedious.
  11. weightless

    Anybody repower with a Torqueedo Pod here

    Some ROV's are using BLDCs exposed to sea water. In theory, I suppose the pod could flood and, assUming, everything in there was perfectly potted it might still work. In reality, I suppose bad things would happen if salt water got in. I like the 1003 that I use. However, and just IMO, I would need to be convinced that they'd upped their game significantly before I'd depend on a product of theirs permanently installed underwater. If saving money was a priority I'd be doubly skeptical.
  12. weightless

    Hydroptere abandoned - Available for $20,000

    I wonder if anyone knows what to do with that hardware in its proper place.
  13. weightless

    Anybody repower with a Torqueedo Pod here

    Do you have cell level monitoring on your battery?
  14. weightless

    Hydroptere abandoned - Available for $20,000

    It is an intentionally offensive bit of hazing. There have been some amusing rejoinders. Yeah, it can be ironical and all that. It's not a particularly great sin but it is a joke that only an ass would make. It's been done a lot. So, and just saying, not judging, but a poster kinda looks like a lazy ass when they go there nowadays. Maybe time to give it rest?