Electronics Arch For 42-Meter Motoryacht

Holland Jachtbouw (Zaandam, The Netherlands) has built and launched a 140-foot aluminum superyacht, the second from the same designers and builders for an experienced yachtsman. Langan Design Associates (Newport, RI) was the naval architect and Rhoades Young was responsible for the classically styled limed oak interior.

Built to Lloyds and MCA regulations, MY Calliope has a design cruising speed of 15.5 knots from twin MTU 16V 2000 diesels. She is fitted with zero-speed stabilizers and an extensive inventory of the latest gear, equipment and electronics.

Langan is known for very crisp detailing and distinctive yacht profiles. Typically, yachts of this size, scope and luxury now bristle with navigation and communications antennae which, without great discipline, can spoil a yacht’s topline appearance. For this new design, Langan developed a special arch structure to support this yacht’s extensive electronics array.

Because weight savings are especially important this high above the waterline, GMT is building the structure in carbon composite. This reduces topside weight by over 500 kg (1,100 pounds) and avoids the need to add tons of lead in the bilge for stability requirements. Plus, this yacht can sit higher in the water and be more fuel efficient.
The strength and stiffness of our carbon structure allows a more striking design that’s cleaner and compliments the overall appearance.

The strength and stiffness of GMT’s carbon fiber solution offer many advantages. The twelve legs and crossover roof are slim yet provide ample interior space for hiding the wiring requisite to the many systems to be mounted above. Carbon fiber also resists and dampens vibration which improves the performance of the high-tech topside electronics this yacht will rely on. Saving weight this high above the yacht’s waterline avoids the need to add thousands of pounds of ballast in the bilge to restore stability; thus, displacement weight is reduced, allowing the yacht to ride higher in the water which then improves her fuel efficiency and environmental greenness.
While the GMT-built arch will support all of the satellite systems, electronic equipment and antennas required to safely navigate the vessel anywhere in the world; the entire arch structure weighs only 599 kg (1,318 lbs). It was shipped unpainted and was then polyurethane finished when the rest of the yacht was painted. The underside of the arch’s roof is removable to provide access to mounting hardware for gear and the electrical connections. The dimensional precision and stability that GMT can achieve in carbon fiber permits tight tolerances for fit and finish, well suited to the demands of today’s ultra-luxury yacht owners.

For more information, go to Unique Applications.