Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Silicon Sea II: Leg 46, CORRECTION
    From: Dan Hogan
    Date: 1999 Feb 08, 08:07 EST

    >
    >
    > > 1)  Using our waypoints, what is the TOTAL rumbline distance we will
    > >     travel to Boston?
    > > --  -----------------------------------------------------------------
    >
    > 14112.8 nmi.
    >
    > Using WGS 84 for calc of meridional parts:
    >                        Merid    Delta     Delta   Delta    RL
    >  Latitude  Longitude   Parts      MPs     Long     Lat    Dist   Course
    > --------- ---------- --------- --------- ------- ------- ------- ----- 33
    > 50.8S  151 18.0 E -2147.567 34 00.0S  151 40.0 E -2158.603   -11.036
    > 22.0    -9.2    20.5 116.6 38 40.0S  166 45.0 E -2504.864  -346.261
    > 905.0  -280.0   783.6 110.9 40 50.0S  174 00.0 E -2673.302  -168.439
    > 435.0  -130.0   360.0 111.2 41 30.0S  175 20.0 E -2726.236   -52.934
    > 80.0   -40.0    72.5 123.5 56 04.0S   67 15.0 W -4061.940 -1335.704
    > 7045.0  -874.0  4691.9 100.7 51 40.0S   57 40.0 W -3614.752   447.188
    > 575.0   264.0   430.0  52.1 00 00.0N   23 00.0 W    -0.000  3614.752
    > 2080.0  3100.0  3576.6  29.9 13 10.0N   59 20.0 W   791.804   791.804
    > -2180.0   790.0  2314.1 290.0 42 10.0N   70 00.0 W  2779.722  1987.918
    > -640.0  1740.0  1828.0 342.2 42 20.0N   70 46.0 W  2793.182    13.460
    > -46.0    10.0    35.6 286.3
    >                                      -------
    >                                      14112.8
    >
    > > 2)  At an estimated speed of 8.4 Knots, how many days is the total
    > >     trip?
    > > --  --------------------------------------------------------------
    >
    > 70.0 days
    >
    >  14112.8/8.4 = 1680.1 hrs
    >  1680.1/24 = 70.00 days
    >
    > > We will have a total of 8 crew when we depart Wellington. We estimate
    > > water consumption at 2 gal/day per man (person). Food required is
    > > estimated at 1 3/4 lbs/day per man.  Plus 50% in case of a slow passage.
    > > And 10 days emergency rations at 3/4 lb per day.  Using these figures
    > > for the trip.
    >
    > > 3)  What is the total weight of food provisions for the trip?
    > > --  ---------------------------------------------------------
    >
    > Assumption: "trip" means Wellington to Boston
    > Assumption: emergency rations are 3/4 lb per day (as stated)
    >       and not 3/4 lb per day per person for 10 days
    >
    > 1351.5 lbs
    Well by TOTAL I meant from Sydney, but I should have specified the
    route properly. The rest of your calculations are OK. I throw in Great
    Circle because people ask for it but I never found any use for GC in a
    small sailboat. On board I use a calculator with Mercator Sailing.
    Dan Hogan WA6PBY
    dhhogan{at}XXX.XXX
    Catalina 27 "GACHA"
    =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
    =-=  TO UNSUBSCRIBE, send this message to majordomo{at}XXX.XXX:     =-=
    =-=      unsubscribe navigation                                         =-=
    =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site