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Charts- care & feeding
Ellen MacArthur wrote:
Get with the program Injun Ear! Any competent sailor who stores charts stores them flat. Not necessarily. Unless you think that U.S. Navy navigators are incompetent. Any real voyaging or cruising sailboat has a chart locker where you can store about a foot deep of charts flat and unfolded. Rolling them up is stupid. It makes them about impossible to use. Not if you re-roll them every 2 or 3 months, as I said in my original post. If you leave them rolled up for a few years, then yeah, they're difficult (but not impossible). Actually, paper charts are stupid anymore. Really? You can get free electronic charts from the WEB and they are the most up to datest you can get at the time. Are you sure? Have you checked charts available for download against the most recent N2Ms? If you really demand paper charts then print them on your printer from the e-chart. And I guess a "real voyaging or cruising sailboat" will have a table sized color printer on board... and a large supply of waterproof ink, too ;) -signed- Injun Ear (formerly known as Eagle Eye) |
Charts- care & feeding
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Charts- care & feeding
My charts have lat and lon in hours, min and seconds,
Wow! Lines on paper! Capt.American wrote: Not just lines Tonto, a geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. It defines two angles measured from the center of the Earth:*the latitude measures the angle between any point and the equator*the longitude measures the angle along the equator from an arbitrary point on the Earth Very impressive. Who sold you these mid-ocean charts, paleface? Ever heard of a plotting sheet? The whole ocean is a "submarine operating area." Listen Chief, some areas are restricted submarine training areas, you will find these areas around islands in the oceans like Guam, and similar Naval bases. Unless you wan't to be on bottom of the ocean like a Japanese whaling school for retards, I suggest you avoid these areas. You will also find restricted areas in the coast pilot for that area. I suggest you study Captain Neals basic Nautical terms. He defines "islands" and land surrounded by water. Ah yes, let's all learn from the Crapton®. A veritable Picasso among bull**** artists. You play the dumb injun with perfect realism. How. Ugh. Me not spend wampum on blank charts showing lines in middle of ocean. Glad me not smart like you. -signed- Injun Ear (formerly known as Eagle Eye) |
Charts- care & feeding
wrote Are you sure? Have you checked charts available for download against the most recent N2Ms? I haven't a clue what a N2M is but I do know the paper charts you can buy, the latest versions, are printed from the same electronic charts that are available free on the Internet. Here's the link: http://chartmaker.ncd.noaa.gov/staff/charts.htm "NOAA's Raster Navigational Chart (NOAA RNCT) is a georeferenced, digital image of a paper chart which can be used in a raster chart system. The NOAA RNCT files are available for free download via the internet at: http://nauticalcharts.noaa.gov/mcd/Raster/download.htm" And I guess a "real voyaging or cruising sailboat" will have a table sized color printer on board... and a large supply of waterproof ink, too ;) That would be nice if you wanted full-sized charts on demand But, you can use a standard printer and regular paper. You can always tape sheets together to make a big chart if that's what you really want. And who needs waterproof ink. Your chart table and chart storage should both be dry. Cheers, Ellen |
Charts- care & feeding
Edgar wrote:
Capt. American's reply does raise another interesting issue. Like I implied in my last post, I do have paper charts for everywhere I go but I also have a chart plotter aboard and the memory chip for this cost me the equivalent of $330. Now where I sail in Oslo fjord this remains useful because there are hundreds, if not thousands, of islands and small rocks which do not change and there are hardly any navigational buoys and no sandbanks at all so the chip on the plotter is still a useful guide and I only bought it last year anyway. But how often is someone who has bought one of these expensive chips going to get an updated one? About every 10 years or so, according to Jeff ;) Paper charts are not cheap but you can afford to update/replace them as necessary, so IMO they are not outdated technology until chart plotter chips come down to reasonable figures Is a hammer outdated? No tool is ever obsolete in the hands of a man who has the skill to use it. The chips *should* be cheaper than paper chart books, given the realities of electronic manufacturing. I would like to try using raster charts with the ability to add my own updates & annotations. One thing to bear in mind, time spent poring over a paper chart, updating it by hand, it time invested in learning the area & the nav aids & local hazards. That is something that no electronic gizmo can give you. On another note, I have recently downloaded a lot of charts navigation free-ware. After a few hours looking them over, I have found Maptech's "Chart Navigator" to be pretty good (haven't tried plugging it into a GPS) and another program called "Global Mapper" to be handy for overlaying charts to cover large areas. I have used "Sea Clear" too but have not gotten the knack of it as quickly. -signed- Injun Ear (formerly known as Eagle Eye) |
Charts- care & feeding
Its nice if you can store them flat,but its a luxury not many of us can
afford. If you have a full size chart table on your vessel its not too hard to build a full size storage space underneath and hinge the table top so you can lift it up to find charts. Storing them this way actually takes less space than storing them rolled up in my opinion, but you do need to take care. you want a good seal around the bottom of the table to prevent water from getting in, and you need to take care when looking through your charts not to rip them. This system can take a bit longer to find the chart you need, especially if you have a lot of charts. There are lots of ways of organising them to make life easier though You can sort the charts out into blocks of continents (if your lucky to have that many charts! then sort them by chart number. Its pretty easy to keep things in order this way, and you can always keep the two or three charts you are currently using on the top then put them back later. You can put a bit of tape on the side of the chart with a number on it to help find them (some books are indexed this way). Old charts can still be used so long as they are accurate. Keeping them up to date with all the notices to mariners can be a full time occupation in itself if you have a lot of charts, but its rewarding work. You can download the notices to mariners digitally now, or if you have time, you can go to your local maritime office and sit there in luxury with a cup of coffee and update your charts there. Shaun How do you all keep your charts? How old a chart would you consider using when visiting a relatively unfmiliar... or completely unfamiliar... area? -signed- Injun Ear (formerly known as Eagle Eye) |
Charts- care & feeding
''lease blocks'' ?
"Capt.American" wrote in message ups.com... My charts have lat and lon in hours, min and seconds, shipping lanes, currents, soundings in fathoms, loran lines, lease blocks, compass rose, loran linear interpolator, variation factors, pollution reports, ship wrecks, conversion tables, explosive dumping areas, submarine operation areas, radio range info, reefs, islands, atolls, bottom info, ect..ect..ect and thats the simple charts, not the pilot chart which have average currents, wind, and information beyond your simple understanding of charts. After reading the responce you provided I suggest you hang your charts on the wall and marvel at all the information you have no clue existed. What a putz you are you deserve a chart that rolls up when you try to use it. Go buy software with a chart plotter GPS interface. Surely you can push a few buttons right? Ever heard the phrase "off soundings"? I would agree in a port with major traffic, an up to date chart is the one to use. What does traffic have to do with the chart? High traffic areas have marked channels, dredging, bouys dragged off location, ranges, light list, designated anchorage areas, ect.. and lots of mariners that submit reports for an up to date Local Notice to Mariners. Charts in high traffic areas are in general more up to date and critical to safe navigation. In an area like a secluded cove or harbor with no traffic and no aids to navigation and older chart showing depths, currents, bottom info is all that is needed to safely navigate. Hope this helps. Capt. American -signed- Injun Ear (formerly known as Eagle Eye) |
Charts- care & feeding
''lights change characteristics''
how so? Scotty "Edgar" wrote in message ... wrote in message oups.com.. .. How do you all keep your charts? How old a chart would you consider using when visiting a relatively unfmiliar... or completely unfamiliar... area? I would not use an old chart at all in an unfamiliar area. Sandbanks move, buoys are shifted, wrecks appear, lights change characteristics, etc etc. Forget old charts for navigation. Frame them and hang them on the wall if you like. But on your boat have new charts or ones that have been regularly updated from 'Notices to Mariners' (or your local equivlent) either by yourself or by returning your charts to a chart agent for correction up to date. Apart from being a danger to yourself and others your insurance may be deemed invalid on grounds that you were negligent if you knowingly go to sea with out-of-date charts. |
Charts- care & feeding
Scotty wrote: ''lease blocks'' ? In 1982 Congress passed the Federal Oil and Gas Royalty Management Act to ensure that all Federal lands in the offshore have proper accounting and enforcement mechanisms. This included a comprehensive system for determining, collecting and auditing all fees and payments for offshore leases in addition to conducting inspections and enforcing penalties. The increased responsibilities led the Secretary of the Interior to create the MMS within the Department to administer all responsibilities relating to natural gas and oil production on the OCS. They range from the scheduling of sales and the leasing of Energy Information Administration, Office of Oil and Gas, September 2005 8 OCS tracts to approval and oversight of offshore operations and the conduct of environmental studies. Today the MMS collects and disperses billions of dollars in revenue from the sale of mineral leases. Offshore leases brought in revenues of $5.2 billion in 2000. This represents 73.1 percent of the $7.1 billion in revenues collected from all Federal and American Indian mineral leases that year. The MMS sectioned off most offshore seabottom land into lease blocks. If you ever sail up to any offshore oil platform you will see a sign on two corners that tell the name of the area and the block number, this is the area leased to an oil company by the MMS. You can purchace block charts from any chart dealer. They are great for fishing and a rock solid way to double check your position in any area that has offshore mineral exploration. Capt. American "Capt.American" wrote in message ups.com... My charts have lat and lon in hours, min and seconds, shipping lanes, currents, soundings in fathoms, loran lines, lease blocks, compass rose, loran linear interpolator, variation factors, pollution reports, ship wrecks, conversion tables, explosive dumping areas, submarine operation areas, radio range info, reefs, islands, atolls, bottom info, ect..ect..ect and thats the simple charts, not the pilot chart which have average currents, wind, and information beyond your simple understanding of charts. After reading the responce you provided I suggest you hang your charts on the wall and marvel at all the information you have no clue existed. What a putz you are you deserve a chart that rolls up when you try to use it. Go buy software with a chart plotter GPS interface. Surely you can push a few buttons right? Ever heard the phrase "off soundings"? I would agree in a port with major traffic, an up to date chart is the one to use. What does traffic have to do with the chart? High traffic areas have marked channels, dredging, bouys dragged off location, ranges, light list, designated anchorage areas, ect.. and lots of mariners that submit reports for an up to date Local Notice to Mariners. Charts in high traffic areas are in general more up to date and critical to safe navigation. In an area like a secluded cove or harbor with no traffic and no aids to navigation and older chart showing depths, currents, bottom info is all that is needed to safely navigate. Hope this helps. Capt. American -signed- Injun Ear (formerly known as Eagle Eye) |
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