Re: [Nml] Silicon Sea II: Leg 46, CORRECTION
Subject: Re: [Nml] Silicon Sea II: Leg 46, CORRECTION
From: Dan Hogan (dhhogan@XXX.XXX)
Date: Mon Feb 08 1999 - 08:07:03 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@XXX.XXX
Catalina 27 "GACHA"
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