Always looking to advance the art and science of boat building, Lyman-Morse is taking an innovative approach to the construction of a new 57’ custom motor yacht being developed in a collaboration with C.W. Hood Yachts and Stephen Waring Yacht Design. A Spirit of Tradition show-stopper now under construction at Lyman-Morse’s boat building facility in Thomaston, Maine, it will bring head turning elegance to the Express-Cruiser market.
“Lyman-Morse has been working with the Hood family since we got into the business in 1978, and having just finished Anna, another highly engineered build from Stephens Waring Yacht Design, Chris Hood knew we were up and running on what he wanted to do in terms of building this new powerboat,” said Drew Lyman, president of Lyman-Morse.
Demonstrating the Value of Wood-Composite Construction
Two interesting new techniques are being utilized in the construction of this 57’ high-performance cruiser. First, to achieve the expected 39 knots from the Volvo Penta’s IPS 1350 integrated propulsion system, the yacht is engineered with weight-control and strength as a priority.
Stephens Waring provided innovative composite construction details that hybridize wood and fiberglass into a contemporary build method. For custom projects, this approach delivers substantial value and cost savings over molded methods.
A New Take On the Ergonomics of Boat Building
For this new project, Lyman-Morse is employing a new overhead crane system to facilitate an ergonomically efficient building environment for the boat building crew. Taking the module-building practice employed on Anna to the next level, they will build the hull in four separate parts:
- The bottom module, which is about 50’ in length by 15’ in width that includes the stem of the boat
- Both topsides sections, port and starboard, that run from the stem aft to the transom
- The curved transom section
This innovative modular wood-composite process, developed in partnership with Stephens Waring Yacht Design, is supported in part by a grant from the Maine Technology Institute, which recognized the potential efficiencies and improved workforce ergonomics that could be achieved through its implementation on the Hood 57 and other yachts.
Modular Boat Building, Step-by-Step
The process starts with the jig that was precisely cut by Lyman-Morse’s Haas GR-712 CNC machine from direct digital inputs. Once assembled, the jig yields such a perfect form that the wooden sheathing for the bottom along with the pre-made curved transom can be installed.
Meanwhile, the tricky internal longitudinal structural stringers, using CNC machined foam formers that have their structural epoxy laminate completed, are constructed simultaneously with the bottom sheathing. To eliminate the ergonomically difficult work of working on an upside-down part, the bottom is lifted off the jig using the overhead crane, rotated to the upright orientation and placed in a cradle which then allows the inner structural laminate to be installed and epoxy infused.
Next the pre-made internal longitudinal stringers are lifted and placed in reliefs that have been machined into the jig, perfectly locate them in the hull. Then the bottom, with its inner skin installed, is lifted, rotated back to the inverted orientation, and put back on the jig. An epoxy adhesive is used to bond the longitudinals to the hull bottom.
The topside planking follows, finishing up with a structural epoxy-impregnated laminate as the outer skin for even distribution and incredible strength. After the hull is rotated to the upright position and the jig removed, the topsides will have their structural inner skin vacuum bagged in place and the joints between the four separate parts will be joined together, creating a structural monocoque assembly.
Perfect for Family, Friends, and Fun
Perfect for weekend cruising and entertaining, the Hood 57 will feature custom titanium hardware and a titanium spiral stair leading to the flydeck. These elements will be constructed at Lyman-Morse Fabrication. The yacht’s unique open-format cockpit with direct access to the water and dock, along with well-founded accommodations for four, will ensure fun times on the water for family and friends.
A 2020 delivery is expected for this 57-foot power yacht. It is yet another undertaking between Stephens Waring Yacht Design and Lyman-Morse Boatbuilding. The companies recently delivered the 65-foot sloop Anna. C.W. Hood Yachts is also the builder of record for Stephens Waring’s elegant daysailer, the C.W. Hood 24.