Site profile: history, construction philosophy, reputation
Greenline Yachts born with a clear mission: hybridize the yachting bringing energy efficiency to the mainstream. From the launch of technology H-Drive in 2009 with Greenline 33, the brand invested in electrical architectures and renewable generation solutions integrated into the hull and tuga (photovoltaic panels), becoming a reference point for those seeking energy e comfort in rada without constantly resorting to the generator. The reputation of the construction site is based on an approach systems-first, in which layout, materials and plants are jointly designed for reduce consumption, noise and vibration and simplify life on board. The 58 Fly, presented to the general public Cannes Yachting Festival 2023, represents the mature evolution of this vision, until it won international awards in 2025 in segment 18–21 m.
Shipbuilding and dimensions
Key numbers of hull
- Length f.t. (LOA): 18,20 m
- Maximum garlic: 5,12 m
- Fishing: ~1,00 m
- Dry dislocation: 30 t
- Design category: EC A (oceanic)
The dimensions and geometries result in an advanced compromise between platform stability in rada and hydrodynamic efficiency typical of a modern planant. The setting is that of a flybridge planante with optimized volumes and mass centers, thanks to the use of GRP with targeted machining on laminates and light superstructure, including parts composite and carbon for hard tops and components, so lower the center of gravity and increase stiffness. Technical data and geometric interference are confirmed by product cards and official site material and international dealers.
Building materials: hull, superstructure, interior
The hull is in fiberglass (GRP) laminated with criteria weight optimization and reinforcements located in the loading areas (paratie, madieri, zones of support of the machinery). The superstructure integrates light panelling and, on the fly, a hard top in composite that hosts and protects the plant photovoltaic. The interior uses sandwiches and sound-absorbing coatings to reduce vibro-acoustic transmission from machine rooms and axis lines, for the benefit of comfort and perceived quality. Theergonomics of materials (anti-slip flooring, simplified maintenance surfaces, UV-resistant padded) dialogues with a warm stylistic language made of natural wood, lacquered finishes and premium technical fabrics.
Engines, propulsion and transmission
Diesel and diesel-hybrid configurations
- Diesel Cummins from 610 o 715 hp (axis lines), available with H-Drive hybrid (coaxial electric motors of ~25 kW each) for navigation and regeneration.
- High performance diesel-only option: couple Caterpillar 1000 hp for maximum speeds close to 30 knots.
H-Drive Scheme
The system H-Drive by Greenline adds to the axis line a e-motor that works in traction (for low-speed electric drive) or in generation (when diesels are active), establishing an energy cycle that maintains battery services and traction at optimal levels without constantly depending on the generator. The 24 V DC edge network and the power inverter support 110/230 V permanent AC, reducing the need to turn on rada generators. According to the dealer technical list, the 58 Fly has integrated photovoltaic panels on the roof (≈1.320 W) and liFePO batteries dedicated to services (~10 kWh base) with charging/inverter systems 5.000 VA / 120 A.
Performance and autonomy
Diesel and hybrid trends
- Maximum speed (main configurations): ♪25–26 nodes with Cummins 715 H-Drive; up to 30 knots with CAT 1000
- Cruise: ~20 knots with Cummins 715 H-Drive
- E-mode: ~6 knots with typical autonomy 20–30 nm full batteries, variable for use profile and installed capacity
From tests at sea there are extremely quiet electrical trends and reduced consumption to displacement systems. YachtingNews has reported, with Cummins 715 hp, about 6 knots to 600 rpm with ~4,7 l/h for motor in diesel configuration—an indicative figure of efficiency to low systems, useful for transfers in limited-speed areas. In profiles long range (5 medium knots) alternating thermal refills, the yard refers autonomous until ~1.500.
Tank and weight capacity
- Fuel: ~2.300–2.500 L depending on the specification.
- Fresh water: ~600 L.
- Black water: ~400 L.
- Indicative dry dislocation: ~30 t.
Onboard systems: electronics, home automation, navigation
The 58 Fly is conceived as a “smart platformer”. The electrical panel is sized to support h24 household utilities thanks to power inverters and high capacity battery packs. Navigation electronics includes solutions multifunction display in the bridge main e fly, solid state radar, autopilot and NMEA integration to monitor propulsion, levels, photovoltaic energy and battery status. The domours governs lighting, air conditioning, curtains and electric openings; the predisposition for remote monitoring allows control of key parameters even from the ground. Distinguished elements are the permanence of AC network and the redundancy charge sources: diesel alternators (H-Drive drive drive in generation), dock, photovoltaic and, where installed, silenced generator.
Design, interior architecture and layout
Designers' signatures
The exterior design favors clean surfaces, extended stained glass and wide passageways, with a protected rudder and a flybridge from generous volume, often completed by hard top in carbon. Undercover, the typical layout provides three cabins double with shipowning at all bay, two/three bathrooms and a technical room under the pagliolato of the living room (direct access from the kitchen) that offers full standing and lends itself as utility room multipurpose—a solution praised for versatility and central baricentro. There is a cabin crew optional aft.
- Cabins: 3 (plus crew)
- Beds: up to 6 + 1–2 crew
- Bathrooms: 2–3
- Exhibition with kitchen aft-galley close to the well for a indoor–outdoor circulation optimal
Ergonomics and study of spaces
Ergonomics can be seen in raise regular steps, continue and in a careful environmental acoustics (absorbent panels, balanced axis lines, elastic supports for machines). The positioning of the kitchen aft allows direct service to the well, while the scale for the fly, wide and with rigid handrails, guarantees safety even in navigation. The central shipowner enjoys natural lighting diffused thanks to long hull windows; the bathrooms use separate showers with glass doors and hotel class rubinetterie.
Layout
Innovation and research: hybrid, photovoltaic, stabilization and safety
Greenline anticipated the trend of over a decadewater hybridization, standardizing components that elsewhere are still optional. On the 58 Fly, in addition to the H-Drive, we find:
- Integrated photovoltaic (up to ~1,32 kW) with dedicated adjustment and monitoring.
- LiFePO packages high power inverter/charger services for AC permanent.
- Stabilization gyroscopic or fin (option), with significant benefits on rollio in rada e dynamic comfort.
- Regeneration via e-motor in diesel gear.
Life on board and comfort
Pozzetto, beach club and flybridge
The well leveled with the salon creates a single environment convivial; the floor plan it is hydraulic for steam / stretch and as a private beach. The flybridge, true second salon outdoors, offers duplicate steering, sunbathing, disconnect and mobile wet-bar. Covering with hard top in carbon reduces weight and accommodates photovoltaic, improving thehotel autonomy. In rada, the combination AC permanent + batteries + panels allows you to live on board with generator-free time prolonged.
Insulation, noise and vibration
In the published tests, the 58 Fly highlights low noise levels in E-mode and acoustic comfort above the displacement systems. Axle-line transmission, combined with elastic supports and a careful compartment, limits vibration propagation. In E-mode you get the condition “zero local emissions” and “near-silent” ideal for protected bays or areas with NO.
Sailing performance: sea tests and professional feedback
Independent evidence confirms a neutral trim and progressive reactivity to handcuffs. With Cummins 715 H-Drive the boat shows convincing ideas up to about 25–26 nodes and a stable cruise to 20 knots. The answer to the rudder it is predictable thanks to centring weights and famine surfaces that maintain portanza without excessive beaking, restoring comfort to guests even in moderate sea format. BoatTEST highlights the practicality of utility room under the lounge, which integrates plants in a dry and accessible area. YachtingNews brings low consumption to the minimum regimes, useful for transfers and maneuvers.
Market and competition
Segment and price positioning
The 58 Fly is located in segment 18–20 meters premium flybridges, with prices base indicated from about €1.5 million (apartments and options), in line with european competition and technological award linked to the hybrid. Quotes on units set up with complete packages and superior finishes can grow in a sensitive way; ads and dealers show a lively market for the latest Greenline models.
Direct competitor analysis
- Absolute 56/58 Fly: “sports shuttle” setting with focus on volumes and viability; traditional IPS/diesel engines; less push on the integrated hybrid.
- Azimut 53/58: strong performance and impact interior design; classic approach to edge systems, non-central electrification.
- Princess F58 / Sunseeker Manhattan 55–60: wealth of finishes, global service network; standard mechanical setting and less autonomy in hotel-load without generators.
In this context unique selling proposition of the 58 Fly is the native combination h-Drive, photovoltaic and permanent AC network: more silence in rada, more domestic autonomy, greater flexibility in living on board—all items perceived by the customer as tangible value.
Industry Trend
The market 18–20 m shows three trends: hybridization and reduction of emissions, advanced domomatics with remote control, and “open” layout that lower the inner/outside borders. Greenline is avant-garde in the first, with solutions for over a decade and today made standard. The 58 Fly is therefore a reliable indicator where the segment will go in the next models.
Target customer
The typical profile is that of private shipowners experts, attentive to comfort, consumption e energy in rada; operators premium charter who want a plus of sustainability and a user experience distinctive; company of representation oriented to propose an 18 m “eco-forward” to an international clientele. The ideal use ranges from extended weekend to the seasonal cruise mediterranean, with long-range stretches at displaced speeds in E-mode or low-range diesel.
Results and awards
The 58 Fly did world debut a Cannes 2023 and has gathered media attention on international press for hybrid approach in the flybridge segment, up to category prizes 18–21 m in 2025. The evidence on YachtingNews and BoatTEST have strengthened the perception of a product mature and consistent with the philosophy of the construction site.
Future prospects: construction site roadmap and impact on the sector
The success of the 58 Fly platform confirms that the serial hybrid is now ready for volumes and weights of an 18–20 m band. It is likely to expect further battery scaling, photovoltaic power increase with more efficient and software integration even more thrust—float telemetry and predictive diagnosis—in addition to solutions New generation H-Drive with more compact electric motors and higher energy density. For the sector, the message is clear: the comfort “generator-free” becomes a competitive metric as speed and layout.
Engineering comparison with the main competitors
Energy efficiency and hotel-load
Compared to similar flybridges (Absolute, Azimut, Sunseeker, Princess), the 58 Fly offers a structural advantage in daily use: always active household utilities via inverter and batteries, recharged by photovoltaic and H-Drive regeneration. This lowers the generator time and improves liveability in shady with noise and reduced smells. Competitors can match fast performance or finishes, but rarely offer a integrated energy ecosystem equal to the 18–20 m band.
Performance and seal
In the profile cruise real (18–22 knots), the 58 Fly keeps stable trim and consumption in line with modern planant famines; to the displaced regimes the difference makes itE-mode, which allows “green” transfers in sensitive areas or marine entrance without local emissions. Thehard top in carbon contributes to reducing the weight at the top and, indirectly, the rolling time, with tangible benefits on the comfort of indoor life.
Image gallery
Summary data sheet
- Year: Greenline Yachts (Slovenia)
- Model: 58 Fly (public debt 2023)
- Material hull: GRP (composed); hard top and composite/carbon components
- LOA: 18,20 m – Baglio: 5,12 m – Fishing: ~1,00 m
- Dislocation (dry): 30 t
- Engines: 2× Cummins 610/715 hp (H-Drive available); 2× CAT 1000 hp (diesel-only) option
- Transmission: axis lines; coaxial e-motor ~25 kW (H-Drive)
- Max speed: ~25–26 kn (715 H-Drive); ~30 kn (CAT 1000)
- Cruise: ~20 kn (715 H-Drive); E-mode: ~6 kn for ~20–30 nm
- Tanks: fuel ~2.300–2.500 L; water ~600 L; blackwater ~400 L
- Category CE: A (oceanic)
- Beds: 6 in 3 cabins (+ optional crew)
- FV system: ≈1,32 kW integrated on the roof; 5,000 VA / 120 A inverter (typical setup)
Video
Conclusions: positioning in the sector
The Greenline 58 Fly embodies maturity of hybrid applied to medium-large flybridges. It is not a style exercise, but a consistent package where carena, plants and layout converge to offer comfort, energy autonomy and silence— three values increasingly sought by shipowners and high-end charters. In a market where innovation is often synonymous with infotainment or aesthetic frills, the 58 Fly proposes functional innovation that changes the way to live the boat.
If priority is live the rada with the same quality of home, reducing generator times, and maintaining at the same time performance the 58 Fly is now one of the most convincing proposals. For shipowners sensitive to sustainability e total cost of ownership, H-Drive hybrid, integrated photovoltaic and permanent AC network translate into concrete benefits— less noise, more autonomy, greater use value. This is how Greenline, strong of a path started in 2009, continues to indicate the route for the entire segment.