With over 45 years in the boat building industries we have seen the design and construction turn full circle. As the introduction of new stronger and lighter reinforced plastics continue to develop so will hull designs and construction methods. Constant change and new technologies is seen as much in the yacht building industry as any where else.  The electronics and mechanics are more complete and complex. Finding weight reduction and strength are a constant. Hull design and materials are constantly changing. Having all the amenities and latest styling is the desire of anyone with the ability to buy the latest models.

With these considerations of building unique plugs and molds for the larger boats that will be out dated next year is to expensive and foolish for a company of any size. The one off custom built boat is the most accurate for the customer and builder. All fiberglass hulls are idea for the smaller recreational boating industry were the weight to strength ratios are within the safe limits. The greatest danger to any vessel is water reaching the cored hull (wood or foam sandwiched in fiberglass. We have composite core materials today that will not absorb water and are stronger and lighter than wood.
With the larger yachts and mega yachts the old method of fiberglass over wood is still the newest method for one off unique designs and has been the most popular construction method since the introduction of fiberglass.

Finding new composites is the key to the next generation in the yacht building industry. Spherical Fiberglass Designs continues to test new technologies and build the ideas for tomorrows Yachting industry. Most boat builders agree that the cold-molded wooden boats currently being produced are generally lighter and as strong as all glass boats. We can assist you in every phase from the conceptual idea through all stages of construction to create that one-of-a-kind vessel that will suite your every need.

The keel, stringers and deck beams are all constructed of laminated wood for strength. We have found plywood laminated with fiberglass and Kevlar to be the ideal materials for boat hulls and structural bulkheads.  Kevlar - a high-tech polymer tougher than fiberglass that can be laid on much lighter to achieve the same strength.

However, with the use of Kevlar and other high-tech building materials, light weight and speed doesn't come at the expense of strength. Building lighter and stronger boats is a major goal for all yacht builders. All custom sport fishing boats all feature modified hulls designed for increased speed and efficiency.

Three layers are applied to the bottom with each layer set at opposing angles for extra strength. Two layers are used on the hull sides for weight reduction. The plywood is formed and fastened to the longitudinal battens and stringers. The hull is then covered with Kevlar and fiberglass matt and finished with gelcote to complete the cold-molded process.

 This technique duplicates the weight-saving advantages of foam-core hulls, while adding the extra strength of a wooden hull. Most of the hull's weight is in the resin which is absorbed by the fiberglass. Using cores made of wood instead of foam core, the inner and outer panels do not have to be as thick in resin and glass. The result is a stronger, lighter hull with a better glass to resin ratio.
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Charleston, South Carolina

704 701 5331