The project combines an elegant and contemporary design with a high-level technological content: semi-dislocating hull, modular architecture, evolved energy management systems and an internal habitability that approaches that of higher-sized yachts. The most striking feature, however, is not only technology, but the ability to translate it into a sensory experience: the silence during electric navigation, the fluidity of the passage between the modes of propulsion, the diffuse brightness of the interior. The Greenline 45 Fly is not a style exercise, but a coherent project that focuses on intelligent comfort and environmental responsibility. It is the concrete demonstration that the future of the boat will not depend only on the power of the engines, but on the quality of the way you navigate.
Site profile: history, construction philosophy and reputation
A brand born to integrate sustainability and user experience
Greenline Yachts was born in Slovenia with a well defined mission: to offer high energy efficiency diportistici motoryachts without sacrificing dwelling and building quality. Adoption pioneer of hybrid and electrical solutions, the integration of solar panels and the intelligent management of onboard energy have built over the years a solid reputation in the segment “eco-conscious”. The 45 Fly is one of the most emblematic models of this philosophy, for variety of engines and cut residential apartment of the interior.
Architecture and design: signatures and collaboration
External aesthetics and naval architecture lead the signature of J&J Design, while the interiors are curated by the study Too Design by Marco Casali, names also known in the world of superyachts. This synergy results in stretched and clean lines, a rudder with wide visibility, full width flybridge and internal layout conceived with logic from hospitality hotel.
In-depth technical analysis
Main dimensions and hull geometry
- Length outside everything (LOA): ~51’1” (about 15,57 m)
- Maximum: ~14’8” (about 4,47–4,57 m depending on sources and configurations)
- Typical fishing: ~3’7” (about 1,09–1,10 m)
- Indicative dislocation: ~13–13,5 t (standard configurations), with variations based on motorization and equipment
I do hull adopts a optimized semi-dislocating hull to reduce hydrodynamic resistance to medium-low cruising and to maintain stability and comfort even at regime. In configuration with pod drive (Volvo Penta IPS), Greenline has developed a specific hull optimization to make the most of the push and maneuverability of pods (joystick, simplified side moorings, improved directional efficiency).
Materials and construction process
The 45 Fly is built in fiberglass (GRP) with process to vacuum infusion, to obtain more homogeneous laminates, low weight and greater structural rigidity. The use of vinyl resins on external skins contributes to high resistance to osmosis. Cover and superstructure are designed to keep the center of gravity low and promote roll stability.
Inside, the selection of materials is characterized by durability and premium perception: wood essences, coatings in technical and leather fabrics, resistant surfaces in solid surface for work floors and bathrooms. The design of Casali emphasizes natural light, integrated boots and visual continuity pozzetto–salone–plancetta.
Propulsion, transmission and energy management
The most distinctive technical value of the 45 Fly is propulsion flexibility:
- Hybrid H-Drive: integration diesel + electric with reduced emissions and noise at low/medium speeds, and use of diesel for fast transfers. The system includes solar panels integrated in tuga and a battery pack sized to power both onboard services and electric gear for short stretches.
- Full-Electric (E-Drive): two dedicated electric motors and battery counter (about 80 kWh in known configurations) with possibility of range extender diesel. Typical performance: up to ~13 kn of electric peak and ~30 nm to ~7 kn in pure electric (indicative date, dependent on loads and sea).
- Traditional diesel up shaft drive o Volvo Penta IPS (e.g. IPS500/IPS600), for peak speeds above 30 kn with joystick manoeuvrability and optimized cruise consumption.
The Power Management typical includes: integrated photovoltaic panels (e.g. 2×~330 W depending on packages), high capacity inverter/charger, house banks banks banks battery lithium and centralized monitoring. The objective is hotels on board silent (condition and utilities) and autonomy of services without generator for many hours of anchoring.
Performance: speed, cruise, autonomy and consumption
Performance varies significantly according to the chosen drive:
- IPS version (e.g. IPS600): maximum speed over 30 knots in favorable conditions; high cruise 22–25 knots.
- Hybrid: electric navigation typically up to ~6–7 kn in silent; electrical autonomy indicative of the order of ~20–30 nm at low speed, with passage to diesel for long routes.
- Full-Electric: up to ~13 kn of electric peak (advanced setup) and ~30 nm to ~7 kn in pure electric according to test and industry reviews; with range extender they are obtained autonomous well above economic speed (indicatively hundreds of nm to 5 kn, depending on the generation and the tanks).
Independent tests and tests at sea show very favorable consumption economic trends (7–12 kn), consistent with the semi-dislocating hull and with the “efficient cruising” setting.
Onboard systems: electronics, home automation, navigation
The main rudder and the fly ring multifunctional instruments with plotter, autopilot, radar/CHIRP, telematic management of power unit (battery, inverter, charge), joystick (sui pod), thruster e monitoring services. The domours includes lighting management, air conditioning, roofs/covers and pumps, with efficiency logic to limit loads and noise to anchor.
Design, interior architecture and layout
The shipowning cabin all glare at the center of the boat exploits at best the width of the hull; it is completed by bathroom en suite with separate shower box and walk-in wardrobe. To the bow, the vIP cabin has generous volumetrics, double bed and dedicated bathroom. In disconnect, 360° windows and flooring on one level emphasize the continuity between the well and the living room; the kitchen (galley-up) overlooks the living room and the sliding door towards the well, ideal solution for life at anchor.
The flybridge, at full width, is one of the largest in the category: sunbathing area, wet-bar, table and top rudder with excellent visibility. The wide tuga covers the sidewalks, increasing safety and protection from sun and rain.
Innovation and research: efficiency, stability, safety
- Hybrid and electric propulsion with architectures scalable and upgradeable.
- Integrated solar panels in tuga and lithium battery banks high capacity for silent “hotel” services.
- Carena semi-dislocated optimized to reduce the resistance to economic cruising speeds.
- Stabilization optional (giroscopes or fins) to reduce the roll both in transfer and to anchor.
- Passive safety: extended handrails, protected walks, wide windscreen, main bridge on one level.
The set of these solutions contributes to reduce consumption and emissions, extending the time to anchor without generators and improving acoustic and vibrational comfort.
Life on board and comfort
The 45 Fly is designed for medium-haul cruises in family crews or with friends. The large cockpit dialogues with the dashboard (often with dinghy handling), while the salon is configured as living room real with opposite sofas and dining table. I bathrooms with separate shower box walk-in closets and the numerous storage ranges tell a “residential” approach. The equipment hotels (air conditioning, full-size household appliances, dimmable lighting) is supported by electrical installations dimensioned for long stops.
Real navigation: tests at sea and feedback from professionals
Water tests report compound trim, lack of structural creaks and passages on the expected wave, with silent footprint particularly appreciable in electric mode or moderate regimes. The joystick (in the pod) makes manoeuvres intuitive even in tight spaces, while the cover of walking and the height of the paramares increase safety.
Systems and plants
Energy and photovoltaic
Typical packages include integrated solar panels (e.g. 2× approximately 330 W), li-ion desks for services, inverter/charger (e.g. 5 kVA) and energy management centralized. This enables 230/120 V power supply in a way generator-free for many hours, especially in the day.
Hydraulic, comfort and noise
Fresh water and black water plants for cruise, boiler and air conditioning channeled with zoning on cabins and lounge. The focus onvibro-acoustic insulation engine and bulkhead rooms help to reduce NVH (Noise, Vibration, Harshness), a key factor in shaving comfort and prolonged overnight stays.
Market and positioning
Segment, price and equipment
The Greenline 45 Fly takes over flybridge segment 45–50 feet with a position oriented to efficiency and comfort. Prices and configurations vary by market and packages: historical indicative lists place it in the middle-high segment, with strong differences between diesel, H-Drive and all-electric.
Target customer
- Private owners in search of residential comfort, easy conduction, low consumption and silence in rada.
- Premium charter companies attentive to perceived sustainability and the quality of experience on board.
- Corporate hospitality and representation: large convivial spaces, “green” image consistent with ESG.
Industry Trend
The push towards hybrid/electric drive reduction of emissions and consumption and the domotic board user-friendly trends are consolidated in 45–60 feet. The 45 Fly values these drivers with a coherent proposal, able to speak both to the expert sea wolf and to the new shipowner who comes from the electrified automotive.
Competition and technical benchmark
The competitive advantage of the 45 Fly
Unlike many rivals “only diesel”, Greenline offers triad propulsive (diesel / hybrid / full-electric) and power management integrated photovoltaic: these are levers that reduce operating costs and noise, increase service autonomy and improve the experience to the anchor. The full width fly, among the most spacious of the class, is an additional distinctive element.
Results, awards and presence at fairs
The 45 Fly is frequently present in international exhibitions (Cannes, Düsseldorf, Miami, Sydney) with media attention for its sustainable approach and for the width of the fly. The specialist press reviews praise theinhabitability logic of plants and the propulsive modularity.
Future perspectives: where Greenline goes and how the 45 Fly evolves
The growing adoption of high density batteries, systems fast charging, range extender more efficient and support fuel cell phone new generation opens interesting scenarios for updates mid-life of the model. Greenline has demonstrated in years of knowledge retro-fit energy packages and management software, preserving the residual value of the vessel and aligning it to emerging standards.
Image gallery
Summary data sheet
- Project/Design: J&J Design (external, naval architecture); Interior Too Design by Marco Casali
- Construction: GRP infusion, vinyl resins; superstructure optimized for low gravity
- LOA: ~15,57 m (51’1”)
- Baglio: ~4,5–4,6 m
- Fishing: ~1,10 m
- Dislocation: ~13–13,5 t (variable for motors and equipment)
- Propulsion: Diesel (shaft/IPS), Hybrid H-Drive, Full-Electric
- Maximum speed (IPS): >30 kn (favourable conditions)
- Electric speed: ~6–13 kn depending on setup and loads
- Electricity: ~20–30 nm to 5–7 kn (indicative)
- Solar/Power: integrated tuga panels, Li-ion counters, inverter/charger high capacity
- Typical Layout: 2 en suite cabins (full-beam midship + VIP forward), lounge with galley-up, full-width fly
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Conclusions: the engineering synthesis of 45 Fly
Greenline 45 Fly is a technical proposal consistent with the trends of modern diporto: efficiency, silence, comfort e propulsion versatility. Semi-dislocating hull and photovoltaic power management are rational choices that translate into low consumption to the intermediate and in a hospitality “from the biggest yacht”. The full-width fly, the well-sized equipment and ergonomics of the covered passers-by confirm the attention to functional detail. For shipowners sensitive to ESG themes and experience generator-free the 45 Fly is one of the most interesting platforms available in the 45–50-foot segment today.
The 45 Fly represents the perfect fusion between engineering, elegance and environmental awareness. It is not only a motoryacht, but a declaration of intent: to demonstrate that sustainability can live with luxury and performance. Its refined architecture, the silence of navigation and the intelligent management of energy make it a point of reference for the nautical of the future.
More than a boat, it is an experience: that of a journey where every mile becomes a measured pleasure, a balance between technique and harmony. With the 45 Fly, Greenline confirms its leadership in the efficient yacht segment and opens a new route to a more responsible, quieter and infinitely more sophisticated navigation.