Location: Venezuela boat hull design (pad design) Hello, my name is Cristian,this is my firth time here, and i would like to know somebody hellp me. I have a powerboa 16? vee fiverglass 22? 140hp looper, and i like to put in it a pad but i don?t know the dimensions (size), and how it comport in the boat, i have very much time driving boat, but never with pad, and i need the pad for more speed and woul like to know about the size of a box of water that the people do for blow off in final of transon and bow. I'm not familiar with the calculations for retrofitting an existing hull with a pad; most boats I see with one have it built in from the start. Location: Venezuela thanks matt, bu i like to know what is small size in inchs.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. The boater who is looking for all-around use can make almost any hull design work for many water conditions. When you are shopping for a new boat, first consider the water in which you'll use the boat. Originally Posted by Richard Woods By "Wharram like" do you mean open deck or a deep V hull or really like a Wharram??? Will you be building the boat just with hand tools just as they did hundreds of years ago, or use power?? Once built will you use modern equipment like wire rigging, dacron sails, gps, an engine, good drinking water, take fresh food - so no scurvy?
The idea is a very fast cat, with a flush deck, low profile, wide open for a big deck tent, enough room down below for a head, Taylor's stove, and sleeping for 4.
Originally Posted by newcat Two more that don't have an answer for the original question, and have a life long need to sound smart on an internet forum.
Later a few would make a model of the old and a model of the new and try to compare by towing the models at the same time.
One last comment - anyone who says they are not concerned about windward performance is a danger to themself.
Good luck, your nasty attitude will not get better information, it will shut off the help - assuming you think it is help.
Location: UK, USA and Canada So where did you find that photo of a Strider you posted? Originally Posted by Richard Woods So where did you find that photo of a Strider you posted? Take this design, remove the top, use carbon beams with lashings, flush deck, that is my goal. Originally Posted by upchurchmr One of the best ways is to look at something already made that works and start from there. Originally Posted by newcat I could pay someone with a 3d scanner to scan any hull shape i want, and reverse engineer it. Location: Milwaukee, WI How do you intend to design and build carbon fiber tubes? We offer a complete range of services, including design, mechanical, metal fabrication, fiberglass and machine shop.
Location: Iowa Wave-cancellation using side hull expansions During a study on increasing payload capacity of a navy destroyer using retrofitted side-hull expansions, we discovered a nice wave cancellation mechanism akin to the bulbous bow.
I would be pleased to learn how a wave cancelation system can result in a reduction in the net input force. Location: Hampshire UK I think you'll find some small racing dinghies have been using something similar to absorb wave energy for a while. Originally Posted by SukiSolo I think you'll find some small racing dinghies have been using something similar to absorb wave energy for a while. Ad Hoc, There is some chatter from the powers that be about model testing for validation; keeping my fingers crossed.
Messa, yes, the blistering eye sore would also require force to generate the second wave, but the resulting destructive interference modifies the overall pressure distribution around the hull that the wave resistance is reduced with a better pressure recovery at the aft.
Location: Italy (Garda Lake) and Croatia (Istria) When I first approached the boat design 20 yrs ago, CFD was used almost exclusively by the aeronautical industry.
Many of them were about the history of yacht design, dealing with designs from big caliber names like Robert Stevens, Colin Archer, Dixon Kemp, Uffa Fox and others. And as soon as I read the subject of this thread, I have recalled the story about the schooner yacht Sappho, designed by William Townsen.
After getting back to the US, she was sold and the new owner ordered a rebuild of the hull. 2) Studying the history of ship and yacht design, even the anecdotal one, can be as important as studying the modern ship technology.
Location: Saint John New Brunswick Did they keep prismatic coefficient constant when they did the study?
This effect seems related to the way optimal prismatic coefficient varies with Froude number. Yep, when I first started with CFD as a student 15 years back we were using the DoD supercomputing machines to run simulations that can now be done using a high-end desktop. Btw, we just opened up a new CFD service for boat designers with pretty affordable and flexible pricing.
52' folding boat » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post any examples of side-to-side transferable water ballast sailboats? Or rely on what they did hundreds of years ago, back when seafaring was far more dangerous and unsafe than today. So move the rig out to the hulls (Junk) add a little more deck space forward of the were the mast used to be, update the hull shapes to modern performance thinking, and there we go!
One of them even went so far, he dreamed up a statement i made, then asked me why i think it! Several posters have pointed out inconsistent statements that you will have to resolve if you want something useful. And at that stage all you'll have is a boat that floats level, not necessarily one with good performance or one that is comfortable to live on board or is seakindly to sail.
If you are considering a new boat or need work on your current boat, why not put our 25 years of experience to work for you. The side hull expansions modified the wave profile along the hull such that the wave-energy was reduced with a better pressure recovery at the stern. And, as you note in the paper, you may gain in one location but lose in another, this case roll period! In the meantime, I am thinking of modifying my kayak with styrofoam and paddling around in the summer.
A simplistic analogy would be a bunch of surfer dudes carrying some of the payload surfing the bow waves and the rooster tail, thereby recovering some of the wave energy. The theory, the turbulence models the numerical techniques were in a quite advanced stage of development, but the required hardware was still slow and costly. The central part of the hull was stripped of the planks, new wood was added to the outer edge of her ribs in order to increase the waterline beam of the hull, and was re-planked again. It gives a good insight into what has been done in the past and which direction can one go in search for new solutions.

I don't have a scanner at home, so have scanned them from one of my old books with a smartphone.
The extra displacement is added only in the midsection, and that too only below the waterline so that the waterplane area is not modified for roll period considerations.
If they were highpowered enough or had deep enough pockets they might make a small scale boat to test. I tried to make the same suggestion I just outlined above, and it was obvious you weren't interested. It was absolutely out of reach of an average boat designer, let alone a poor student like I was.
There was a considerable money circulating in the betting industry, hence so many regattas were held for big yachts at that time. It would be neat if we could design a boat with inflatable chambers that can be inflated in sections depending on the speed of operation. But she had lost all the races she attended, so the owner took her to England with intention too try making her compete for the America's Cup.
Once they sailed that they tried to compare against the boats they started sailing with, possibly in one on one competition.
It was supposed to be an easy task, because American boats were routinely winning against the British fleet in AC of the time. Nestles is recomended only for advanced surfers.Click the photo below to view Nestles video. Then they tried to imagine a better shape from the experience they had with their first boat.
P-Land is recomended for intermediate to advanced surfers.Click the photo below to view P-Lands album.
Click the photo below to see The Points album.Fishing Panama, Surfer ParadiseFishing in the Gulf of Chiriqui region is regarded as a world class fishing destination. There have been many write-ups in sport fishing magazines about the marlin, sailfish, Wahoo and tuna that have been caught in this area.We operate primarily as a surf camp.
Fishing off the boats is offered at no charge as the boat captains drive around the surf breaks keeping an eye on the surfers. There is no charge for this type of fishing.We also offer an outer island trip, which requires a payment of $320 for the extra gas used by the panga boat. We should be able to get out to the Coiba Island and Hannibal Bank area where large marlin and tunas can be caught. It has been described as the perfect wave you draw on your notebook in high school that just keeps going and going. Virgin Islands, and Puerto Rico).I called the Delta customer service rep to ask if that was a typo (mistake) and she said no. She answered Yes, that is correct.Heres a petition going around: Fight Airline Surfboard Charges Sick of paying airline surcharges for your board?
The reason for the new price is because of the increase in fuel costs and other commodities that have steadily increased over the past two years.
Improvements have been in the area of another honeymoon suit, new wood decking, new tiled floors, new boat, new motors, new rental surfboards, improved port facilities. However, if you would like to lock in the old rate from 2008, then you will need to make a reservation and pay the deposit by December 31st, 2008.
Ive only been here a few days, but have added the best photos that Ive taken yet to my portfolio.
And, yeah, I caught my fair share of these bombs check my personal photo section to see for yourself! Im in the process of adding photos with a slow, third world internet connection, so be patient theyre on their way.This place is so beautiful, and the place Im staying is something else.
These offshore breaks are heavy-duty, deep water reefs with some areas of dry-reef that need to be carefully negotiated.
The vibe is so cool, and everyone is surfed out and in a good mood all day.Check the photos and book your tickets. He escapes the cold of Washington State to visit us in the warm waters of Panama during February and March. It has taken a little time to get from physically being at home to mentally being back as well. My heart is always surfing around the world even if responsibility is trying to get in the way. I will get some things done on the farm and then it will be back to the beach in Oregon.The attached picture was taken at Leftovers on the island of Outer Silva about 10 kilometers from Morro Negrito Surf Camp.
There are 4 breaks on the island and various snorkeling opportunities for the non-surfers or people who need a break. I mention this as on the 3rd day I was there, the waves were breaking in the 10 plus range with at least a 6 throw to the lip. It pitched me over the falls backwards and held me down for a long time in a lot of bubbles.
I did not hit anything, although when I saw the magnificent Shuler epoxy surfboard that Lanny made for me to surf in Panama, was in 2 pieces. This meant that I was going to have some short-board experience for the remainder of the stay.
I gave it a try and had my board leash come off my ankle and had to swim into the rocky shore.
This picture was taken 2 weeks ago, was voted the wave of the day and is a true Monday Morning Wave.The guests, cooks and staff made this a time to remember, always. I wish this experience to all of you and thank everyone who made this happen.Have a great day,BobP.
As a side note, I was able to come back 1st class on both flights from Panama City, Panama to Seattle, Washington, USA.
As good as the airline was the cooks at camp did it better job and their meals tasted superior.
Panamanians have a strong sense of pride for their provinces, and the Foundation thought this would be an opportunity for the children to see some important parts of Chiriqui. Led by camp manager, Jeff Healion, ten children and nine parents enjoyed a two day excursion of learning, fun, and exploration set to the theme of Getting to Know my Province.A Traveling by boat and bus, the trip included visits to the mountain town of Boquete and the provincial capital, David. The first stop was Paradise Gardens, an animal sanctuary and refuge in the cool highlands of Boquete, a thriving hub of coffee production and nationally famous for its coffee and flower fair.
Here, we enjoyed interactive tours of monkeys, exotic birds, endangered mammals, and an enclosed butterfly park. Most all the animals at Paradise Gardens have been rescued and are awaiting release back into the jungle.A After a picnic lunch in Boquetes main plaza, it was down to the warmer climes of David, Panamas thriving western hub of agriculture, business, and tourism. The group visited Culturama, a historical and cultural society located in one of the oldest buildings in Chiriqui.
We learned about local history and were treated to entertaining stories by one of the areas best storytellers.A What is a field trip without a little down time, so we headed over to the theater and caught the new Disney holiday movie Enchanted followed by a stop at MacDonalds. After dinner we went to see Davids new million-dollar plaza, probably the nicest plaza in Panama, if not Central America.

Just by luck, a local philanthropic organization was presenting a Christmas performance of dance, music, and holiday dramas in the parks amphitheater. It was a lovely tropical evening and we enjoyed the festivities besides being tired from a day of busy events. Finally, we made it to a comfortable nights sleep at Hotel Toledo.A Day two began with a fun breakfast at a popular downtown cafeteria where we were treated to a private reception room.
From the restaurant we walked to the Sevillana Bakery where we enjoyed a full tour of the bakerys back kitchens.
In Panama, as in much of Latin America, the bakery still plays a major role in peoples daily lives. At Sevillan, fresh bread slides out of the ovens nearly all day.A A short walk from the bakery we stopped at citys main fire station. Here we had a full tour of the facilities and then were treated to a simulated emergency call.
We watched the firemen slide down the poles, put their suits on, and then leave the firehouse.
After some fun pictures with the firehouse staff, we were on our way to our final destination.A Davids International Airport is the second largest in Panama and Aeroperlas, the regional carrier, had invited us to board one of their planes as it was being prepared for a flight.
Probably not something we could have done in many countries, we all boarded the plane, visited the cockpit, and then relaxed in the cabin seats while the flight attendants answered questions from the children. Wow, what a thrill for the children.A With just a few hours left before we needed to begin our journey back to camp, we spent a few hours looking around the busy commercial district of David, bustling with holiday activity. In Latin America, so much of the activity begins out in front of the stores so just walking around the streets is fascinating.A It is hard to imagine how our trip could have been more fun, rewarding, or educational.
Sure we arrived back at the island tired, but the children were still buzzing with excitement from the events and what they had experienced. If you could have seen the smiles and eyes during the two days, you would all know how rewarding it is to share with those that are less fortunate. During the holiday time, it was especially rewarding for us to share a magical treat with the children from our island.
The old price has been $600 per week and the new price will be $650.The reason for the new price is because of the increase in fuel costs and other commodities that have steadily increased over the past two years. Improvements have been in the area of another honeymoon suit, new wood decking, new tiled floors, new boat, new motors, new rental surfboards, improved port facilities.However, if you would like to lock in the old rate from 2007, then you will need to make a reservation and pay the deposit by December 31st, 2007. The 25 ft deep V hull boat can smoothly cut through big swells and is equipped with new twin 115 hp 4 stroke motors, live bait well, GPS fish finder and an onboard stereo system. The Gulf of Chiriqui is located south of David and covers an area of 14,740 hectares plus a great number of Islands and Islets.
Among them you can find Isla Coiba, Isla Cebaco, Isla Montuosa, Boca Brava, Jicaron and Isla Secas with some of the best big game sport fishing, surfing and sport-diving in Central America.
Hannibal Bank and Coiba Island are both well known sport-diving and salt water sport fishing destinations Panama Central America. This creates currents that are convenient when going on an offshore fishing salt water fishing trip.
The Coiba Island is now a patrolled national park and protected from commercial fishing within its boundaries. The island was first ruled by Coiba Indians and later ruled by Vasco Nues de Balboa who at some point was defeated by pirates.
Besides from sport fishing, here you will find great opportunities for adventure travel or eco tourism.
You will find a great variety of monkeys, iguanas, crocodile, snakes and over 133 different species of birds for those birdwatchers. Cebaco Island is located between Santa Catalina and Mariato West Coast of the Peninsula de Azuero.
This island is home to some of the most beautiful beaches with crystal clear water and scenery for sport-diving, snorkeling or guided fishing trips. The Cebaco Bay is located south of the island and it is excellent for big game fishing or angling, sport diving and surfing.
Its reefs are home of Cubera Snapper, Roosterfish, Dorado, Monster Yellowfin Tuna (100 + pounds) and a variety of billfish such as sail fish Montousa Island is 10 miles off Hannibal Bank and it is also a great sport-diving spot in clear waters of Panamas Pacific Ocean.
The bottom floor also rises dramatically from approximate depths of 10,000 ft making it great for deep sea fishing in Panama.
Moreover, this island is a boutique resort we operate with which was designed for those who want private, pristine surroundings with excellent service. With a theme of Hacia el Futuro, or Towards the Future, the trip was for many of the participants their first travel outside the province and their first visit to the capital of Panama City. Over a period of two days, the group of students and parents, led by Morro Negrito Surfguide Jeff Healion, traveled to the Miraflores Locks of the Panama Canal, the ruins of the first settlement of Panama, the Presidential Palace which included a surprise meeting with President Martin Torrijos, and the new continent-spanning Centenario Bridge.
Along the way, the group enjoyed some out-of-the-ordinary treats of pizza, ice cream, and holiday shopping at the new Albrook Mall at the site of the former US Albrook Air Base.The design of the trip was to bring the students in contact with the past, the present, and the future of their country through the ruins, the Canal, and the government buildings. At the Canal, the group was treated to a private presentation of the Panama Canal movie and then witnessed two giant Panamax ships passing through the locks. Nothing could have been more surprising though than when Panamas President pulled up just as the group was visiting his palace. As he left for his office, he commanded his staff to give the group a special tour inside the palace.Healion reported the smiles, excitement and gratitude we saw during the trip were heartwarming reasons why we know the Foundation can do good work. If a student wishes to continue, the family must send the child to the high school on the mainland. For most families, the cost of transportation, food, housing, and school supplies is a great burden and many are unable to send their children, especially those with several children.The educational assistance program will provide families with the funds necessary for supporting their children in higher education. In 2007, another two will be eligible to continue at high school if their families so decide.
With the new program we hope that money will no longer be a factor whether families send their children.The surf camp enjoys close contact with all the families that will be involved in the program and will be able to monitor the progress of the students. We have seen many of these children grow up and it is especially rewarding to know they will have new choices and opportunities for their futures.
We know their ties to the island will always be strong but we also hope that by continuing their education their new paths will show them what a truly special place their home is. September 2006, a one thousand watt wind turbine was installed that has been doing an excellent job of supplementing the solar system with wind generated power.
Previously, the solar batteries would automatically disconnect themselves due to low voltage at about midnight. Hopefully, we can help inspire the camp visitors that come to surf camp to perhaps consider installing their own clean energy systems, wherever they may come from. There are a number of artesian springs pumping a large amount of water out of the ground, so much that it has created several water falls on the island, explains Steve.

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