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    Re: On Math and Navigation
    From: Bruce J. Pennino
    Date: 2014 Sep 18, 11:52 -0400
    This reminds me of an event many  years ago in Chesapeake Bay......... We were in a medium size power boat, maybe 26 - 28 ft  with compass, charts,  etc. Baltimore and land in all directions were  unseen in the haze/fog.
     
    A 12 –14 ft outboard  power boat with 2 or 3 people pass nearby and shout.....”Which way to Baltimore?”  We pointed in the correct direction and off they went.  So many ways they could have gotten into a real jam!
     
    They had no life jackets, no radio, no compass; nothing except their fishing tackle.

    Bruce














     
    From: Greg Licfi
    Sent: Thursday, September 18, 2014 2:31 AM
    Subject: [NavList] Re: On Math and Navigation
     
    > On 09/17/2014 09:11 PM, Brad Morris wrote:
    > And in a sense, you are correct.
    > Hundreds of navigators have applied the standard techniques sketched above without deep mathematical
    > understanding and have successfully navigated from port to port. Its helpful to have a deeper understanding
    > (some more than others) but its not a requirement.
    > Have fun!
    > Brad

    Brad,
         I would go one further and say for 125 years thousands of navigators successfully navigated from port to port with only one good 'noon sight' & 'time site' each day.
    And the reason they were so successful was they marked their position on a charts and were meticulous in their Dead Reckoning and log keeping.
    I bring this up because without fastidious Dead Reckoning & logging you are lost in between fix s. I teach boating safety with the CG Aux and it blows my mind
    to see people leaving the dock without a weather briefing, or paper charts, and every once in a while with out a gps either. I actually had a power boater from CT. pull up
    to my sailboat at the beginning of the season and had this exchange: "a what harbor is this?" "Huntington, where are you going?" "Oysterbay" "got a chart I'll show you"
    "no" "what does your gps say?" "don't have it on board" I'm a cfi and Master 50 ton and if I ever had an exchange like that the FAA or CG would put my credentials through
    a shredder! BTW: someone mentioned Sumner - I think his DR error for the 600 mile leg of the trip he 'discovered' LOP's on was 30 miles or 5% West of his actual position.
    So he might have made Smalls light regardless - just more apprehensively.
    My $0.02 ~Greg



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