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Subject: Re: [Nml] Silicon Sea II: Leg 46, CORRECTION
From: Mike Wescott (mike.wescott@XXX.XXX)
Date: Sun Feb 07 1999 - 18:49:09 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
Wellington to Boston: 12876.2 nmi (Rhumb Lines)
12876.2/8.4 = 1532.9 hrs
1532.9/24 = 63.9 days (use 64).
1.50 * (8 * 64 * 1.75) + 10 * .75 = 1351.5
4) How long will the water tanks supply (See NOTE below) last?
-- -----------------------------------------------------------
13.75 days
220 / (2 * 8) = 13.75
> We can store an additional supply on deck in containers. We add 110
> gals of water.
> Our stop is at Wellington, New Zealand. The arrival waypoint is (40d
> 50.0'S 174d 00.0'E), just north of Stephens Island.
> 5) What is the TC and Dist from our departure point(33d 50.8'S
> 151d 18.0'E)?
> -- ------------------------------------------------------------
TC 111.1 Dist 1164.1 (Mercator Sailing)
Lat Long MP dLat dLon dMP Dist Course
-------- --------- --------- ------ ------ ------- ------ ------
33 50.8S 151 18.0E -2147.567
40 50.0S 174 00.0E -2673.302 -419.2 1362.0 -525.74 1164.1 111.1
> 6) What is the Great Circle route and initial course?
> -- --------------------------------------------------
TC 117.9 Dist 1157 using law of cosines formulae
> Our anticipated departure date is February 17, 1999.
> 7) What is the Zone Time(ZT) of sunrise at Sydney, Australia
> (33d 50.0'S 151d 20.0'E)?
> -- ----------------------------------------------------------
0531
>From Almanac 2/17/99 Sunrise: 30S 0541
Interpolation (from table): -5
1d 18.0' (More East = Earlier): -5
----
0531
-- -Mike Wescott mike.wescott@XXX.XXX=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@XXX.XXX: =-= =-= unsubscribe navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
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