Custom Boatbuilding & Composite Fabrication

Update on the PT11 trimaran “Three Little Birds”


Date posted: January 23, 2012

This winter we have added a very unique anchor roller to the Birds. The anchor roller is set “normal” to the sheer near the bow. Being a multi hull anchoring always includes a bridle off of the ama. So the fair lead for the anchor rode is just what you see. It comes more or less perpendicular off of the boat. We also added carbon tracks for the bikini nets, and then a repaint of the whole bow area including some more refinement of the stem.. She is a sweet boat!

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A view of the finished boat


Date posted: June 5, 2010

Dave Walworth has provided some renderings of the nearly finished 3-D model. This one is my personal favorite. The model is growing as the design nears completion of all the details. Not only is this a pretty picture it is also an exact duplicate of the actual boat / or more to the point the boat is an exact duplicate of the model. The interior structure, systems, and deck gear are all part of the model and we can take a 3-D section anywhere to create drawings and CNC tool paths for building or modifying any component or system of the boat.

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First assembly– upside down no less.


Date posted: April 26, 2010

The ama halves and beams were fit to the main hull in order to bond the beam sockets. The outboard sides of the amas are not bonded until a post cure is complete, ensuring the inner skin and structure is fully post cured.

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Thermo Formed Core


Date posted: January 28, 2010

The core was thermo formed into our female molds on January 28th.

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Thanksgiving Break


Date posted: November 30, 2009

On November 31st, just after our Thanksgiving break the hull molds were erected with a few ribbands supporting them.

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Mold Stations


Date posted: November 23, 2009

Scott assembles computer lofted and CNC cut mold stations.

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Beam Building


Date posted: November 22, 2009


The beam plugs are ready for molding.

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PT-11 Design and build team.


Date posted: November 3, 2009

Meet the ACC11 Build Team
Dave Walworth
The Naval Architect of the PT-11 is Dave Walworth.
Dave grew up in the 70s in Fort Worth, Texas. He attended St. Johns College where he received a Bachelors in Liberal Arts. After that he taught sailing in Annapolis and built sails in New York. His next stop was Maine at the Landing School where he received a certificate in boat design. This is where Dave and Bill K met in 1988. After his stint in Maine at the Landing School he joined the team at Goetz Custom, where for 5 years Dave and Bill worked building boats and sailing together.
Realizing building may not be his destiny, Dave applied to MIT and was accepted in the Naval Architecture and Marine Engineering Masters program. Dave completed his masters in 1996 all the while living on his 1961 Fairey Marine Atlanta 26 in Boston Harbor. After graduation, Dave went to work for Gold Coast Yachts St. Croix, USVI, as their engineer. Dave still resides in St Croix but now works for himself and possesses his P.E. License. One of his designs, Makani, a 65 foot sailing charter cat doing business in HI, has been clocked at over 26 knots with 50 passengers on board! Visit Dave’s Website for more information about his work.

Kevin Baxley
Kevin is the owner and impetus behind the PT-11. He is involved daily in the decisions behind the construction, design, and outfitting of the 11. Kevin has been lifelong sailor. In his adult years he has been a multi-hull sailor having owned an Atlantic 42 cat and a F-31 tri. His new PT-11 is a big step up in performance and capability. Kevin plans to performance cruise the 11 in New England, campaign her in some Caribbean regattas, and perhaps do some Pacific sailing as well.

At his work he is President and Chief operating officer of the world’s leading supplier of entertainment and event technology – Production Resource Group (PRG). Kevin oversees the day-to-day operations of each of PRG’s offices in the United States, Canada, Japan and the United Kingdom. He joined PRG in 1988 as Vice President of Finance. In the ensuing years, he was also given several important operations roles, including Executive Vice President of scenic operations. In 2000, Kevin was named Chief Financial Officer of PRG, and in early 2003, he was given the responsibility of Chief Operating Officer as well. http://www.prg.com/

Bill Koffler
Bill has also been a lifelong sailor, and has been building hi-tech composite boats for 21 years, including 12 years with Goetz Custom where he served as a “Boat Boss” for 10 years. In his tenure at Goetz Custom, Bill was part of building 7 ACC class yachts, 3 Volvo 60’s, Roy Disney’s west coast sled “Pyewacket,” USA4 and many other cruising and grand prix racing yachts. As the owner of ACC, Bill has successfully built 8 world-class performance cruising boats, with the PT-11 Trimaran being number 9 in its 9 year history. ACC has become a recognized leader in custom built hi-tech performance boats.

The Rest of the PT-11 Gang
The whole crew of ACC can be seen on our website.

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