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> We then motor to the Isla Flamenco and anchor at(08d 55.2'N 79d 31.6'W) to do
> the final trip planning, servicing, and provisioning the boat. We will motor
> from our anchorage to abeam the Light at Isla San Jose(08d 10.5'N 079d
> 15.0'W). Speed 8.3 Kts. Our departure is planned for sunrise on 24/06/2001.
>
> 1)  What is the Zone Time(ZT) of sunrise at our anchorage?
>     What is the UT/GMT time of Sunrise?
> --  ------------------------------------------------------

Anchorage at 08d 55.2'N 79d 31.6'W. Sunrise on 24-Jun-2001 will be
shortly after 0541 LMT. LMT is 4d 31.6' West so we add about 18 min to
get ZT. And for GMT we add 5 hours. A close enough answer is

0600 ZT (GMT+5)
1100 GMT

Wow, sitting in the Pacific further east than where I'm sitting now
(Columbia, SC).

> 2) What is the TC and Distance  from Our anchorage(08d 55.2'N 079d 31.6'W)
>    to abeam of Isla San Jose Light(08d 10.5'N 079d 15.0'W)?
> -- -----------------------------------------------------------------------

Reading directly from the chart (or plotting sheet, in this case)

C = 160T    D = 47.6

> It is late in the season and the North Pacific storms are beginning so we
> elect to bypass the Galapagos Islands. We will follow the recommendations in
> Ocean Passages For The World and in World Cruising Routes and on departing
> Isla San Jose Light(08d 10.5'N  79d 15.0'W) we will head for a Mid-Ocean
> Point(MOP) at (03d 00.0'N  110d 00.0'W).

Why so far south? To avoid the storms? Don't we risk light winds so far
south?

> 3) What is the TC and Distance to the MOP at (03d 00.0'N  110d 00.0'W)
>    from Isla San Jose Light(08d 10.5'N  79d 15.0'W)?
> -- ------------------------------------------------------------------

Using M.P.:           C = 260.4T   D = 1861.9
Using M.L. (5d30'):   C = 260.4T   D = 1862.6
Using GC:            IC = 262.1T   D = 1861.5

> From the MOP(03d 00.0'N 110d 00.0'W) we head to make landfall on the
> Southwest coast of Hawaii(19d 30.0'N 154d 45.0'W). We have two alteratives
> depending on current and weather, either a Great Circle Course or the Rhumb-
> Line course.
>
> 4)  Calculate the Rhumb Line TC and Distance to landfall.
>     Calculate the Great Circle initial course and Distance to landfall.
> --  -------------------------------------------------------------------

Rhumb Line (M.P.):    C = 290.5   D = 2820.2
Great Circle:        IC = 294.2T  D = 2801.1

> 5) To the nearest tenth of a day, what are the total days enroute from our
>    anchorage at Isla Flamenco to the Southwest coast of Hawaii as our plan is
>    layed out? Sailing Speed 9.5 Kts, motoring Speed is 8.3 Kts:
>
>     Isla Flamenco (08d 55.2'N 79d 31.6'W)
>     Isla San Jose Light(08d 10.5'N 079d 15.0'W)
>     Mid-Ocean Point(MOP) at (03d 00.0'N  110d 00.0'W)
>     Southwest coast of Hawaii(19d 30.0'N 154d 45.0'W)
> -- ------------------------------------------------------------------------

For planning purposes we'll use the longest (Rhumb Line) and slowest (8.3 knot,
199.2 nmi/day).

Leg 1:   47.7
Leg 2: 1861.9
Leg 3: 2820.2
=============
Total  4729.8 which is 23.7 days

> Having a 6 person crew and water consumption at 1.5 US Gal/day per person.
>
> 6)  What is the expected water consumption for the trip to Hawaii?
> --  --------------------------------------------------------------

213.3 gal

> 7) Estimating 3lbs of food per day per person what is the total weight
>    in food for the trip?
> -- -------------------------------------------------------------------

Twice the water. 426.6 lbs.


--
        Mike Wescott
        Wescott_Mike@EMC.COM

   

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