Log of SV Free Spirit and ships company

The chronicles of the schooner Free Spirit and her crew, embarking on an open ended journey upon the great rolling heap. Free Spirit is currently pursuing humanitarian and commercial goals in the Dominican Republic, on the island of Hispaniola. Working under the Ocean Reach USA and Paradigm Research banners, she is serving as logistics headquarters, workshop, and development laboratory for many ongoing projects. This is the log of her journey.....

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Wednesday, November 15, 2006

South Rim - Grand Canyon


WOW! We made it to the Grand Canyon.... I have wanted to come here for many, many years. Now that I have been (for only a day), I am even more sure that I would like to return and explore for a couple of weeks. I told the boys that I will bring them back when they are grown, and we will take mules down into the canyon, do white water rafting, and swim under water falls.....




We found that although incredibly "Grand", the Sedona area was much more reachable. I felt very humbled and small looking down into the depths of the canyon. I can't help but wonder what it would have been like to be an exploring and come upon the canyon unexpectedly. I bet their first thought was, "How in the heck are we going to get across that"!




It is not viewable in this picture, but on the southern end of the trees down in the valley, there are a group of buildings. I believe that they are used for overnight accommodations for hiking trips into the Canyon. It really put into perspective, by how tiny they were, how far away it really was to the bottom!




It seemed to go on forever....





The one thing that I can assure you about this picture, is that NONE of the Grandparents would have tolerated the taking of this photo! I could not get far enough away from the boys (for safety reasons), to show the perspective from which it was taken. They are at the edge of a rock that hangs out over the Canyon (Can't you tell by the look on Blayde's face, and the death grip between them?). Behind them and to the right is the column that is in the following 2 pictures.




This is the first of a few bird encounters we had during the visit, can you see the hawk now?




How about now????




As you can see, there is a deep crevice between these 2 boulders, so we could not get to the tree, but the boys thought it was cool how it was growing out there all by itself.




Here is my proof that I did indeed allow the boys to "Climb the Grand Canyon" :-)




Our second and most memorable "bird encounter".... We pulled into this lookout and this beautiful Raven immediately jumped up onto the front of the van and started pecking on the windshield. He would stare through at us, peck down into the wiper wells, and stare some more. At first we were wondering what sort of an omen was being delivered to us. It soon became apparent that this was one of the really smart ravens in the park. We figure that he is trained well enough, that if he hears children, he knows there will be food! So, against all the rules, we started to feed him peanuts (when no one else was watching). He would fill his mouth, fly down to his nest and return for more. The kids thought the whole encounter was super exciting, and I have to admit, so did we!




Tamer and The Raven 'having words'.....




Our first sighting of the great Colorado River, which the boys were upset they did not get to see up close and personal. We went and saw the IMAX movie on the Grand Canyon before we went to the park, and the river scenes were amazing!




Tamer and the boys on a little expedition, challenging me to join them. My excuse was that I needed to get some pictures of them.... Much to the enjoyment of all the viewers at this look out, I was called a "sissy girl", and even Double Dog Dared, to get down there! I figured that the Momma's worry I spoke about in an earlier post, may ruin their experience :-)




Just a precious little blue bird that was awaiting the completion of our lunch on the edge of the Canyon, so he could enjoy our dropped crumbs.




FINALLY! A picture of me that I was excited to post ;-)




~Art of the Creator~





My favorite scenery picture of the day, I wish that pictures could really show the boldness of the colors, and depth of beauty that we experienced here.....



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Introducing Propcalc 4.0

Use Propcalc to easily match your hull with your engine, transmission, and propeller
Put the known data in the top fields, then hit the Update button to get the answers.
Results, of course, should be verified by a Naval Architect or qualified surveyor.
Data is provided for three bladed propellers of average type
For two or four bladed props, use the modifiers shown below.

Fill out the fields as follows:

Vessel LWL (ft) = Waterline length
Vessel Disp (lbs) = Vessel displacement
(max) HP = Rated Engine Max HP
Engine RPM max = Engine RPM at Max HP
Engine RPM cruise = Desired or estimated cruise rpm
(Cruise or Max) Kts = Speed to work the calculations for
Slip = Propeller efficience. 45% is average for a displacement cruiser.
Gear ratio = 1: Gear ratio of transmission
SL Ratio Adj. = This value will be added (or subtracted, if a negative value) to the calculated S/L ratio.

Key information:

If the "hp required" is greater than the "cruse HP", you have your cruise RPM set too low for your engine parameters.
If the "hp required" is significantly less than the "cruse HP", you have your cruise RPM set too high for your engine parameters.
If the "hp required" is greater than the "Max HP", then your target speed is too high for your engine/hull parameters.
The S/L ratio is calculated automaticaly based on your input. It can be adjusted if necessary, but normally it should be left alone.
If the calculated S/L ratio exceeds S/L MAX, then the results are likely to be non-predictive. Try a lower speed requirement.
SL Ratios of 1.1 - 1.4 are typical of displacement hulls. Semiplaning or planing hulls can go higher.

Typical propeller slip values:

Sailing auxiliary, barges, etc less than 9 Kts............45%
Heavy powerboats, workboats 9 - 15 Kts....................26%
Powerboats, Lightweight Cruisers 15 - 30 Kts..............24%
High speed planing boats 30 - 45 Kts......................20%
V bottom race boats 45 - 90 Kts...........................10%


Note:

it is possible to get irrational answers by irrational input , I.E specifying excessive speed for hull type and length
Any attempt to exceed hull speed (1.34 times the square root of the waterline length in feet) with a displacement hull are likely
to fail unless the hull is extremely fine (multihull) or otherwise exceptional. In such cases, an S/L adjustment would be in order.

2 and 4 bladed props:


For two bladed propellers, multiply the diameter by 1.05, and the pitch by 1.01
For four bladed propellers, multiply the diameter by .94, and the pitch by .98


PROPCALC
  Inputs:
Vessel LWL (ft) =
Vessel Disp (lbs) =
  (max) HP =
  Engine RPM max =
  Engine RPM cruise =
  (Cruise or Max) Kts =
  Slip =
  Gear ratio = 1:
  SL Ratio Adj. =
   
    Solutions:
  Prop rpm max =
  Prop rpm cruise =
  Pitch =
  Diameter =
  Static Thrust =
  Cruise HP =
  Cruise HP% =
  SL Ratio =
  DL Ratio =
  SL Max =
  HP Required =