Hodgdon yachts of Maine, USA, launched a 100’ super racing yacht!

Published by Editorial Team on 11^th November 2014

Hodgdon yachts launched an exceptional, fast sailing ocean racer last month.   The shipyard representatives from Maine, USA, are very proud of their ability to be one of the few super yacht builders in the world to be able to use large infused composite parts and at the same time capable of executing projects such as COMANCHE, a 100’ super sail yacht built with aerospace technology and now launched and sailing.

Specifications:

During the completion process of this fabulous racer, largest hull infusions in the US, Hodgdon yachts provided the following Q&A press release in March 2014:

Hodgdon Yachts today announced the successful infusion of a 100ft carbon fibre hull mould. The mould to be used for a pre-preg carbon hull is one of the largest single hull infusions ever done in the USA and one of a handful of this scale worldwide.

James Anderson – Engineering Director Hodgdon Yachts refers:

The tooling needed to be carbon to match/minimize thermal expansion with the prepreg part. Given that the tool needed to be carbon it was much more efficient to make a heavy tool laminate with the infusion process so all the material could be put down together and infused in one go. It took less than a week to lay up and infuse the hull.  Using carbon prepreg to make the hull would have been more expensive from a materials point of view and much more expensive from a labor point of view. The additional benefits of the prepreg, such as lighter weight and higher strength and stiffness, are worth the extra cost in the final part, but not necessary for the tool.

1. What are female moulds for carbon fibre hulls usually made from?

If the hull is pre-preg then the mold is often infused carbon fiber made on a male plug, as we have done here. If the hull is going to be infused carbon then a direct female tool is usually machined in foam slightly oversize, then laminated with glass and covered with tooling paste for final machining. The whole thing would be made on a steel frame normally.

2.Does Hodgdon see carbon fibre replacing sheet aluminum for the superstructures of super-yachts in the short or medium term.?

Carbon fiber is becoming more popular the higher you get up in the superyacht. Masts and arches are commonly made using carbon fiber, or glass fiber.  Both offer significant weight savings over metal structures and hugely reduce the amount of fairing needed. Superstructures will follow, particularly where righting moment and overall weight are an issue.

3. Are lightweight panels now replacing ply for bulkheads and partitions? What will the bulkheads in this new yacht be made of?

Most composite yachts would have composite structural bulkheads. This yacht will have carbon/nomex bulkheads.  Interior joiner work bulkheads are made using lightweight carbon or e-glass/nomex panels. This is something Hodgdon Interiors often does for super light superyacht interiors.

4. Do modern adhesives allow bulkheads and partitions to be bonded in without the need for wet tabbing?

In some instances this is done with large adhesive fillets, but it is not a very good practice for primary structure in my opinion. Adhesives can have good ultimate strength but they tend to suffer from poor fatigue resistance. The fibers in the tabbing will significantly improve the fatigue resistance. Where a molded liner is used with a molded channel for the bulkhead the panel can be bonded in but this is a slightly different scenario to bonding a bulkhead to a hull shell.

Hodgdon yachts pride themselves of their origin by claiming area where they come from, Maine, is a special place. They state that not many regions have over 5,600km of saltwater coastline, best lobsters on earth, rich heritagein boat building and some of the most authentic people you’ll find anywhere but because it is all of that and more. Since it was founded about five generations ago Hodgdonyachts claim to be the oldest American boat-builder. Whether its world class yachts, magnificent interiors, advanced composite wonders for the Navy or tenders that complement the world’s finest super yachts, there is no denying, Hodgdonmay build for the world, yet still be a local shipyard from Maine.

MORE ABOUT HODGDON YACHTS
As a company that was founded in 1816, during the era of clipper ships, Hodgdon is America’s oldest boat builder. Still family owned, today this East Boothbay company, (Maine, USA) has evolved into a leader in advanced composite construction while maintaining exceptional skills for world class traditional and modern interiors. The company’s divisions include high end superyacht interiors (up to 80M), custom sail and power yacht construction (up to 60M), defense contracting and custom superyacht tenders. The company currently employs over 150 employees, most of whom are skilled and highly skilled labour. These and other contracts are putting pressure on Hodgdon to hire additional skilled employees. Hodgdon is a 5th generation family run company still located in the heart of Maine’s famed Boothbay Region. Among some of Hodgdon’s more notable contributions to yachting in the last few decades are: ANTONISA (124’) SCHEHERAZADE (154’) AND LIBERTY (80’).

Photo credits to Onne van der Val.

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