HP Forum Archive 12

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Navigation Message #1 Posted by Steven on 6 May 2003, 10:50 p.m. I'm looking for the ultimate nautical calculator. (celestial navigation / great-circle & rumb-line navigation / tide calculation, etc) Any suggestions?

Re: Navigation Message #2 Posted by Katie on 6 May 2003, 11:11 p.m., in response to message #1 by Steven I collect old navigational calculators and am very impressed with Tamaya's. Their latest, the NC-2000, sure looks like it does just about everything one could want along the lines of what you're looking for. They also seem to do a good job documenting how to use their machines. It's very expensive, list price is $1200, but you didn't say that that was a concern.

Re: Navigation Message #3 Posted by Trent Moseley on 7 May 2003, 9:00 p.m., in response to message #1 by Steven If you don't want to pay 1200 bucks, pick up a used 15C or a 42S and program it yourself for your special needs. That's what I did for my amateur astronomy requirements. I got a 15 and a 42 packed with stuff. tm

Re: Navigation Message #4 Posted by Chan Tran on 8 May 2003, 7:44 a.m., in response to message #3 by Trent Moseley If you are going to program it yourself why not picking up a 48. It's cheaper than the 15C and 42C and is easier to find. May be someone already wrote programs for that.

Re: Navigation Message #5 Posted by christof on 8 May 2003, 12:20 p.m., in response to message #4 by Chan Tran I'll second chan tran on this- while the 42 can certianly do most of what you need (likely all with the 32k upgrade), and the 41 certainly can, the 48g/gx will be cheap, easy to backup (glenn does it through the IR link direct from calc to calc)- and you cna still get all the environmentally sealed usable packaging to use it in adverse conditions. Last I checked, the surveying specific providers still had a ton of that stuff. there are/were also some airplane navigation pacs made, not sure if there were and nautical ones, but I know there are some astronomy apps floating around. the 48 series takes a lot of flack here, but you won't find a better general purpose solution with 2 spares for under $400, AFAIK

How's the 41C module? Message #6 Posted by Randy on 8 May 2003, 2:36 p.m., in response to message #1 by Steven Pretending it is still the 1980's, anyone remember if the Navigation Pac was any good for the 41C series?

Re: How's the 41C module? Message #7 Posted by David Smith on 8 May 2003, 7:01 p.m., in response to message #6 by Randy I know a guy who sailed around the world with one in a CX. Also a guy who sailed to New Zealand and back.

Re: How's the 41C module? Message #8 Posted by Karl Schneider on 9 May 2003, 12:17 a.m., in response to message #6 by Randy Complete Nav Pac's go for around $90-100 on eBay. It's an 8kB module whose contents won't fit into the RAM+X-mem on a 41C/V/X (and even if it did, the numbered registers used by the routines wouldn't be available). Worth getting if you need the specialized functionality, but I doubt that it's the best handheld navigational calculation package out there.

HP41 nautic navigation module Message #9 Posted by Christoph Klug on 9 May 2003, 3:42 a.m., in response to message #8 by Karl Schneider For HP41 a special plug in module for nautic navigation exist, called "Bobby Schenk Module" or "Yacht Computer Navi Module". This advanced 8 KByte module was programmed in Germany by Bobby Schenk and Dr. Peter Förster. The module includes world wide navigation, route planning and Time Module features. Best wishes from Germany - Christoph Klug

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