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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Tuesday, July 22, 2008

Independance, Celebration & Change 7-4 / 7-8

The 4th of July coincides roughly with the "Croaker Festival" here in Oriental. There is a small carnival, and thousands of people from surrounding towns show up for the parade and festivities. As luck would have it, we celebrated independence day in oriental, along with their wonderful "Croaker Fest"!

On the night of the 3rd we dressed ship, so as to honor the town and thank them for our warm treatment.

Free Spirit, All flags flying. If you look carefully, there are coded messages in the flag halyards aft...Really. Each nautical flag has a specific meaning, and you must understand the code to translate it correctly...a little more complex than just letter substitution, due to the use of "repeater" flags. Who will be the first to successfully decode the flags, and the meaning?

Twister! at the carnival.... the boys did their best, but were no match for the girls, of course.

Sitting on the sidewalk, watching the parade. They collected up candy that was thrown at them by the floats, but were generous enough to share it with the girls down the curb.....of course ;-)

The latest in land yachts- the optimist caravan.

Kord, our nephew, back from Iraq for a few precious months, enjoying a moment's peace on the bowsprit. Good luck and godspeed, dear nephew!

Fireworks!!! KaBoom!

Despite the safe environment and the beauty of the display, Kord was still a little unsettled by the fireworks when he let his mind wander. A small reminder of the huge price that our loved ones are paying abroad in the middle east - let us all hope that in the end it will have been worth it.

Sadly, Dave (far right) had to leave us for other projects here in Oriental. You are sorely missed, Dave, and we hope that someday you will join us again!


Blogger Gayle said...

You are kidding, right? First off..where's aft? And coded message? Remember you are slightly more intelligent than the average folk. We've got to have a waaayy bigger clue than that one! So glad to see you posting. I check this blog every day for info. and it has been so long. I was beginning to worry. Safe sailing!

4:33 AM  
Blogger Gayle said...

Okay...with the back set of flags I've gotten _ _ _ _ _ 4 AK. So I'm guessing it is something for Alaksa. I have 232AJ, but I don't get it. Either I'm stupid or I have it wrong. Man, I know you guys are so much smarter that I am so I just wanted you to know this is going to drive me crazy!

4:30 AM  
Blogger Gayle said...

Okay...I have invested way too much of my time trying to figure this out. It's making me crazy! :) My final guess is Free Spirit (something)on fire for alaska.

7:18 PM  

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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%


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

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. =
  Prop rpm max =
  Prop rpm cruise =
  Pitch =
  Diameter =
  Static Thrust =
  Cruise HP =
  Cruise HP% =
  SL Ratio =
  DL Ratio =
  SL Max =
  HP Required =