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--- "Gary J. LaPook"  wrote:

> Yep, and I used only the degree scale on my flight computer, the edge
> of a hotel pad of note paper and a tape measure from IKEA.

And luckily for you there was a hotel with a warm bed on that "unknown
shore" - some navigators have all the luck....  ;-)

--
GregR



--- "Gary J. LaPook"  wrote:

> Yep, and I used only the degree scale on my flight computer, the edge
> of 
> a hotel pad of note paper and a tape measure from IKEA.
> 
> gl
> 
> Greg R. wrote:
> 
> > Jeremy wrote:
> >  
> > >>> Since I was bereft of electronic gadgets, I did this with a
> plotting
> > >>> sheet, 2 triangles, a pair of dividers, 2 books, a pencil, and
> small
> > >>>  piece of scratch paper (wouldn't have reams of paper in the
> > >>> Lifeboat).
> >  
> > >> Glad *somebody* actually noticed that part of the exercise
> (though I
> > >> did say the navigator managed to grab all of the navigation
> tools
> > >> before abandoning ship, but your method is also valid).
> >  
> > > I'm not quite sure what you're getting at here.  About the only 
> > thing I really
> > > missed was my regular pocket calculator when doing this.
> >  
> > Ah, I thought you were mentioning that you thought you were 
> > "handicapped" in the exercise by being limited to only some basic 
> > plotting gear (triangles, dividers, etc.). I used parallel rules, 
> > C-Through plotter (great for drawing LOPs perpendicular to azimuth 
> > lines), plus dividers, compass, etc. to work my own plot.
> >  
> > >>> (wouldn't have reams of paper in the Lifeboat).
> >  
> > But.... with a height above water estimated at 20' that's some 
> > humongous lifeboat - and the problem did say something about being 
> > "washed up on an unknown shore". Students, RTFP...  ;-)
> >  
> > --
> > GregR
> >  
> >  
> >  
> >
> >     ----- Original Message -----
> >     From: Anabasis75@aol.com 
> >     To: NavList@fer3.com 
> >     Sent: Friday, June 13, 2008 8:14 PM
> >     Subject: [NavList 5435] Re: 3-Star Fix - "Canned Survival
> Problem"
> >
> >     I wrote:
> >     > Since I was bereft of electronic gadgets, I did this with a
> >     plotting
> >     > sheet, 2 triangles, a pair of dividers, 2 books, a pencil,
> and
> >     small
> >     > piece of scratch paper (wouldn't have reams of paper in the
> >     Lifeboat).
> >
> >     Greg replied:
> >     Glad *somebody* actually noticed that part of the exercise
> (though I
> >     did say the navigator managed to grab all of the navigation
> tools
> >     before abandoning ship, but your method is also valid).
> >      
> >     I'm not quite sure what you're getting at here.  About the only
> >     thing I really
> >     missed was my regular pocket calculator when doing this.  The
> computer
> >     is nice and fast, but not really necessary.  I am so used to
> doing
> >     these sights
> >     with just books and plotting tools, I never learned to miss any
> >     electronic
> >     gadget except a calculator to make the arithmetic a bit quicker
> and do
> >     the interpolations.  Now if you asked me to do sailings using
> trig
> >     tables,
> >     that would be a different story. 
> >     I wrote:
> >     > I used an assumed position method and HO 229
> >     Greg replied
> >     I used 34� N and longitudes based on getting whole numbers for
> the
> >     LHAs.
> >      
> >     When I say "assumed position method" that is exactly what I
> mean;
> >     whole
> >     latitudes and assumed longitudes to get whole numbers of LHA.
> >
> >     Greg wrote:
> >     How about across a parking lot?...  ;-)
> >     Wonder if a dip short correction would have made that
> "artificial
> >     sight" more accurate?...  ;-)
> >      
> >     Well the table in Bowditch for dip short of the horizon has a
> >     minimum distance of about 0.2 nm, although you can probably use
> >     the formula to get shorter distances, but I am not sure of the
> >     accuracy..  In any case, at 20 ft above sea level, your dip at
> >     0.2nm is 56.7 minutes.  I'm not sure how that compares with
> your
> >     observed Hs and the Hs you got after the numbers were massaged
> a
> >     bit.  This whole idea might inspire me to shoot and then post
> an
> >     exercise.  Since the island is to our East, I should be able to
> >     shoot some sunlines based on the shoreline.  Radar will give me
> >     the range so we should be fairly accurate.
> >      
> >     Jeremy
> >
> >
> >
> >
> >    
>
------------------------------------------------------------------------
> >     Vote for your city's best dining and nightlife. City's Best
> 2008
> >     .
> >
> >     >
> 
> 
> > 
> 


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