Powered by a three MTU 16V4000 M90 engines coupled to Rolls-Royce KaMeWa waterjets, Ermis2 offers impressive range, as well as high performance. She is the largest vacuum-infused carbon-composite boat so far attempted and a triumph of engineering and design.
McMullen & Wing had to take special care to build every component exactly to specification to avoid weight penalties. Building a hull of this size strong and light enough to attain 55 knots-plus was a huge challenge, not made easier by the decision to comply with MCA requirements, made partway through the build.
Carbon-fibre composite is used in virtually every part of the boat's construction, right down to the engine beds.
The hull and superstructure, including bulkheads and soles, weighed-in at less than 20 tonnes - engines and associated drive-chains weigh 36 tonnes on their own. It's an impressive structure that can support them, plus fuels, fluid, systems and interior fit-out - and support them at such high speeds.
McMullen & Wing worked closely with High Modulus, who were tasked with engineering a structure that would achieve the maximum speed specified, be able to withstand extremely rough seas, and have a load benchmark significantly higher than Germanischer Lloyd requires for commercial craft. The solution was to combine immense strength with low weight.
McMullen & Wing had to take special care to build every component exactly to specification to avoid weight penalties. Building a hull of this size strong and light enough to attain 55 knots-plus was a huge challenge, not made easier by the decision to comply with MCA requirements, made partway through the build.
Carbon-fibre composite is used in virtually every part of the boat's construction, right down to the engine beds.
The hull and superstructure, including bulkheads and soles, weighed-in at less than 20 tonnes - engines and associated drive-chains weigh 36 tonnes on their own. It's an impressive structure that can support them, plus fuels, fluid, systems and interior fit-out - and support them at such high speeds.
McMullen & Wing worked closely with High Modulus, who were tasked with engineering a structure that would achieve the maximum speed specified, be able to withstand extremely rough seas, and have a load benchmark significantly higher than Germanischer Lloyd requires for commercial craft. The solution was to combine immense strength with low weight.
Structural optimisation began with an in-depth analysis of all of the construction options, from materials specification and structural arrangement, to construction method and technology, and the selection of classification society. To achieve the required strength and toughness at the minimum weight, the final construction solution comprised a fully post-cured, female-moulded, vacuum-infused carbon fibre-reinforced epoxy/foam structure. And as the design progressed, an extensive finite element study of the global structure was carried out for further optimisation.
Specification of the laminates was an interactive process that involved intense analysis and extensive testing, together with close liaison with Germanischer Lloyd. Impact tests were carried out by High Modulus to illustrate the benefits of linear-cored sandwich construction over more traditional single skin laminates for the bottom shell. In addition, the company undertook a programme of quantitative mechanical tests in which beam strip samples from bottom, topsides and several deck and superstructure laminates were tested to destruction at its in-house testing facility. This proved bending strength and stiffness values, as well as the quality of the core bonding and core joining achieved by the yard's vacuum infusion process. Test reports were submitted to Germanischer Lloyd as part of the classification survey process for the vessel.
The result is a boat that truly represents the current state of the art - one of the highest technology luxury motor yachts ever built. Already recognised by the industry for her blend of high technology, good looks and stunning performance, Ermis2 is a finalist in the World Superyacht Awards in two categories: Best Semi-Displacement or Planing Yacht, 30-39m; and the Technology Award.
Once she passed her sea trials, Ermis2 had a busy schedule, cruising New Zealand Waters over the Christmas and New Year period, before being shipped to the Mediterranean in January.
Specification of the laminates was an interactive process that involved intense analysis and extensive testing, together with close liaison with Germanischer Lloyd. Impact tests were carried out by High Modulus to illustrate the benefits of linear-cored sandwich construction over more traditional single skin laminates for the bottom shell. In addition, the company undertook a programme of quantitative mechanical tests in which beam strip samples from bottom, topsides and several deck and superstructure laminates were tested to destruction at its in-house testing facility. This proved bending strength and stiffness values, as well as the quality of the core bonding and core joining achieved by the yard's vacuum infusion process. Test reports were submitted to Germanischer Lloyd as part of the classification survey process for the vessel.
The result is a boat that truly represents the current state of the art - one of the highest technology luxury motor yachts ever built. Already recognised by the industry for her blend of high technology, good looks and stunning performance, Ermis2 is a finalist in the World Superyacht Awards in two categories: Best Semi-Displacement or Planing Yacht, 30-39m; and the Technology Award.
Once she passed her sea trials, Ermis2 had a busy schedule, cruising New Zealand Waters over the Christmas and New Year period, before being shipped to the Mediterranean in January.
