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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Saturday, March 28, 2009

New Year's Haul Out & Anniversary

Free Spirit during her first haul out at Glade's around May 24th, 2004. It is hard to believe that it was almost 5 years ago already! The same awesome yard crew were there then. I think that James, Proctor and Jon were all sure that we would never get her pretty and back in the water :-)



Fast forward to December 31st, 2008, the anniversary of our launch on December 31st, 2007. Bretton getting some good pics of the haul out. It was the first time that he got to see Free Spirit out of the water.



James, directing Proctor's Limo!



At least for this haul out we know exactly what we are in for! The haul out was to repair the damage the hull sustained when the anchor came lose just outside off Southport (see Rough Seas post). Also, the keel was pretty paint free after our little trip down the Dismal Swamp Canal. It was great to have Sherron here for all this fun!



For some odd reason, we always seem to draw a crowd...



Some of the damage from the flailing anchor on the Starboard side. "Rust Never Sleeps"!



Due to the fact tgat we were working our tails off to have time to head to our Timeshare in Daytona Beach for a week, I did not get many pictures of the stages of work.
But here are Paul and Bretton getting the bottom paint on all the repaired places on the hull. We have a saying about the smell of bottom paint being the scent of success! I would have to agree wholeheartedly!



Hey, the little fishes, sharks and dolphins don't care if the bottom has tiger stripes :-)



Ready to splash, January 16th, 2009!



Just a cool shot...



KASPLOOSH!!!!!!!!



A little bitty poisonous snake next to Drake's hand. Yes, I was a wee bit nervous about this shot!



I am rarely off the boat while she is in the water to take pictures, so I really wanted to share these.



The ship on her way to the city dock in Labelle, I had to drive the van in and meet them.



Our good friends Margaret & Cody from SV Drummer (sorry Matt, you must have been working too hard) Miss you guys, see you out here!

posted by CT | 5:18 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%


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 =