Lateral Reveals 70m ENX Concept With 60MWh Battery System

A 70-metre yacht study starts with real itineraries rather than a battery catalogue

Naval architecture firm Lateral has introduced ENX, an engineering study that tests how a large electric superyacht might operate during a normal Mediterranean charter. Instead of designing an unusually large battery compartment and then asking how far the yacht could travel, the team analysed expected operating patterns and the energy required for actual guest use.

At approximately 70 metres and 1,700 gross tonnes, the hypothetical vessel is large enough for propulsion and hotel consumption to be significant at the same time. Air-conditioning, galley equipment, lighting, water production and other guest services do not stop drawing power simply because the yacht is anchored.

The study makes its energy assumptions explicit

Lateral describes a representative week-long charter involving approximately 350 nautical miles of cruising. The total energy needed for propulsion and onboard services during this scenario is estimated at 37 to 50 megawatt-hours, depending on the assumptions used for the route and hotel demand.

Those numbers explain why electrification at this scale cannot be judged from installed motor power alone. Even if electric propulsion is technically feasible, a yacht must carry enough energy for the guests' entire programme and preserve appropriate operating margins for changes in weather, itinerary and service use.

Three energy-storage spaces and a 625nm target range

ENX proposes a total of 60MWh of batteries distributed across three dedicated technical spaces. The design gives a published all-electric range figure of approximately 625 nautical miles. These are estimates for an engineering concept, not performance results achieved by a launched yacht.

Battery size has consequences for displacement, structure, stability and usable interior volume. Designers must consider the weight of cells and protective systems as well as the equipment required for cooling, monitoring, isolation and safe emergency procedures. Solving those problems can change the arrangement of the yacht rather than simply replacing a fuel tank with batteries.

Shore infrastructure may prove more difficult than the voyage

Completing a week under battery power raises an immediate question: where can the yacht recover tens of megawatt-hours before the next trip? Shore connections used by existing marina visitors may be inadequate to recharge a large storage system within a typical charter turnaround.

A credible operating plan would need to account for port electrical capacity, grid availability, high-power connection equipment and charging periods. A technically capable yacht could therefore be restricted to certain destinations until the surrounding infrastructure develops.

ENX is a benchmark for future decisions, not a reported order

The value of the project lies in turning broad arguments about electric superyachts into an explicit set of design constraints. It provides a way for owners and builders to compare the benefits of silent, local-emission-free operation with the weight and infrastructure it demands.

No customer order or production schedule has been announced for ENX. Any eventual yacht would require further development, independent approval and operating data. For now the study demonstrates the scale of the problem and the compromises that a 70-metre electric project would have to resolve.