The Greenline 48 Fly requires a more reasoned configuration than a conventional cruiser. In its 15,97 meters it can combine two diesel Yanmar from 370 hp, H-Drive parallel with two electric motors from 25 kW, storage up to 80 kWh and photovoltaic up to 1.6 kW. The promise of silence and energy autonomy depends on how these elements are sized, installed and used together.
This guide does not describe a sea trial of the editorial staff. It translates official data into a configuration, testing and maintenance audit. Declared performance and autonomy must be confirmed on the individual specimen, recording load, environmental conditions, famine status and active services.
Define the mission before optional
The initial choice concerns the profile of use: diesel transfers, ray stay, coastal electric navigation or combination of the three. From this decision they descend capacity of accumulation, solar surface, air conditioning, dinghy and hotel equipment. Adding utilities without updating the budget can reduce the advantage of the hybrid. The capitulate must indicate for each component weight, absorption, position, protection and maintenance access. Only so autonomy, comfort and energy reserve can be compared with concrete objectives.
Main data to be confirmed in delivery
| Voice | Official data | Operational verification |
|---|---|---|
| Length / glare | 15,97 / 4,80 m | Mooring, hauling and contracting |
| Vacuum fishing | 0,98 m | Detect the full load condition |
| Vacuum Dislocation | about 13.800 kg | Update distinct with fluids and optional |
| Fuel / water | 1.500 / 660 l | Tarare levels and define reserves |
| Black water | 2 × 80 l | Try sensors, valves and ventilation |
| Diesel indicated | 2 × Yanmar 370 hp | Compare diagnostics of the two sides |
| Maximum speed | up to 25 kn | Only with load and documented conditions |
| Layout night | 3 cabins, 6+2 places | Check services and optional skipper cabin |
Different weights and tank levels
Vacuum displacement does not include the actual condition of cruise. Gas oil, water, batteries, people, galley, dinghy and equipment change mass and baricentre. Prior to the test, levels and load are recorded, indicating their position. Each optional on the flybridge raises the center of gravity and adds exposed surface to the wind. An updated distinction allows you to repeat the measurements and to understand if a change of order depends on the sea, the hull or the configuration.
H-Drive: Check every operating status
In the declared parallel hybrid configuration, the two 25 kW electric motors flank the diesel and also work in the generation system, with 20 kW declared on the side. Delivery must try electric start, switch to diesel, charging, stop and service management. Consensus and alarms should be noted. The two sides must respond consistently, without vibration or abnormal temperatures. The crew must be able to recognize the actual mode without depending on the presence of the technician.
Accumulation up to 80 kWh
A lithium parcel of this size is a primary plant. Installed capacity, useful energy, health status, balance, temperature, contactors, fuses, sensors and software versions occur. The compartment must respect ventilation and accessibility provided by the manufacturer. The percentage on the display is not enough: you need to know load and discharge limits and behavior when the system protects the cells. Alarm history and diagnostics must enter the drive file and accompany any future intervention.
Electric navigation and reserve
The manufacturer indicates up to 35 miles to five knots and a maximum electric speed of seven knots. They are values to contextualize with installed capacity, active services, sea and cleaning of the hull. The test measures energy taken by mile to several regimes, not only the operating time. Prior to departure, the minimum charging threshold and the diesel pass point are defined. The residual forecast must be compared with real consumption, including a reserve for manoeuvre and essential services.
Photovoltaic: power and real production
The declared configuration includes 500 W standard and can add 1,100 W on the flybridge, up to 1.6 kW overall. The nominal power does not coincide with the daily energy: shades of antennas, temperature, salt and orientation change the yield. Strings, connectors, regulators, drives and protections are controlled. During testing production and irradiation are compared in several hours. A degraded string can reduce the result without stopping the system, so it needs a registered reference value.
Rada energy balance
Refrigerators, kitchen, lighting, pumps and air conditioning must be tried together, because comfort depends on the contemporaneity of loads. The budget distinguishes peak power, average consumption and expected duration. It occurs when the generator or charging starts from diesel and what utilities are limited. The goal is not always to avoid the generator, but to use it with a verifiable strategy. A table on board must indicate main absorptions, estimated autonomy, alarm thresholds and procedures to preserve navigation and essential services.
Two Yanmar from 370 hp
The thermal component supports the prolonged cruise and the maximum declared speed up to 25 knots. The control starts with cold start and comparison of turns, pressures, temperatures, smoking and tensions. Under load, consumption and diagnostic data of the two sides are recorded. Filters, sockets, heat exchangers and drains must remain accessible. Oil and coolant analysis, along with the historian, help to distinguish ordinary maintenance from wear. The hybrid system does not reduce the importance of supports, joints and alignment.
Test for regimes and curves of the specimen
One speed does not describe a hull called to work from five to 25 knots. The test proceeds for stabilized points, annotating turns, speed, consumption, trim, noise and conditions. At the low ranges there are directionality and resistance; increasing the regime, support of the stern, visibility and sprays. The curve obtained identifies the efficient gait of the unit and allows to compare the following seasons. Each result must report load and energy mode, otherwise the comparison loses meaning.
Local machines and accessibility
Diesel, electric modules, cooling, generators, filters and auxiliary circuits share a space that must remain workable. It simulates access to impellers, valves, arrests, filters and diagnostic points. Lighting, ventilation and flooring must allow safe inspections. During the test we compare temperature of symmetric components and we look for threading or rubbing. High and low voltage cablings must be identified and protected. Cleaning is only valuable if it immediately makes a loss visible.
Cooling of hybrid lines
Diesel, electric motors, inverters and batteries can have different thermal needs. The verification sequence identifies circuits, pumps, filters and sensors, then checks temperatures during electrical, diesel and charging. A system that works at low power can only show a limit during a prolonged transition or with active services. After switching off, the residual heat is observed. Alarms and limits must be explained to the crew, along with the procedure that avoids turning automatic protection into unexpected loss of availability.
Fresh water and black water
The 660 litres of water serve cabins, kitchens and washing, while the black waters are collected in two 80 litre tanks. Indicators, pumps, boilers, showers, valves and ventilation with more contemporary utilities. Sentry must remain dry and a pump should not cycle without request. Rated capacity and autonomy depend on the number of guests. The edge plane includes insulation points, spare parts and procedure for a faulty sensor, avoiding unallowed openings or discharges.
Kitchen and domestic appliances
The kitchen is part of the 48 Fly housing concept, but the appliances must work in a mobile environment. Refrigerators, cooking and sockets try in the real budget, checking stops, ventilation and protections. Drawers and doors must block without preventing quick access. Exhausts must be checked with the boat under conditions. Any cantinettes or additional appliances increase consumption and heat: they must appear in the separate, not be treated as neutral elements.
Three cabins and optional skipper cabins
The declared layout offers three cabins, six permanent seats and two additional seats in the lounge; accommodation for the skipper can be provided. Each room is tested with air conditioning, lighting, pumps and ventilation in operation. Doors, obscurants and exit routes must remain accessible. Doors and drawers require positive stops. The quality of rest is evaluated with active generators and services, because noise and vibration can only emerge in the night configuration and not during a visit to plants off.
Flybridge and second post
The upper deck combines guides, seats, sunbathing and optional photovoltaic. They control drainage, equipment bases, scale, anti-slip and tientibene. The second position must show consistent data and alarms with the internal one; switching and priority of the controls must be tested. Tables, cushions and doors must be effective. antennas, hard-tops and luminaires must not create avoidable shadows on the panels or hinder the visual in the maneuvers.
Pozzetto, aft and external passages
The continuity between the living room and the well favours family use, but the transformation should not obstruct bits, platform and accesses. Doors, tables and seats are tested in all positions; drainage and seals are tested with water. In the passers there is useful width, hooks and anti-slip with wet blanket. A stern requires a tender and platform procedure, if installed, with weight limits, fixing points and manual mode in case of power loss.
Integrated bridge and monitoring
Propulsion, energy, navigation and services must remain legible without overloading anyone who leads. The test includes brightness, essential pages, alarm priority, simulated loss of a source and consistency between the two stations. Percentage battery, power flows and expected autonomy must be compared with real measures. Manuals and software versions must be registered. An elegant display does not compensate for not calibrated sensors or ambiguous alarms: the crew must know which data to use to decide.
E-Drive variant: separate capitulate
The electric variant should not be confused with the parallel H-Drive. Power, capacity, charging, autonomy and operating limits require a specific specifications of the unit. Before purchase, infrastructure is available in ports, charging times, connection compatibility and assistance. Tests include behavior at different charging states and thermal management. The hybrid version data should not be automatically transferred to the electric version, as well as a package shown in promotional material should not be considered installed without contractual confirmation.
documental delivery verification sequence
The final file includes separate unit, weights, serial numbers, patterns, manuals, certifications, diagnostics, software versions and test results. Each anomaly has responsibility, expiry and verification after correction. The crew repeats ignition, transitions, isolation, alarm management and emergency procedures. The data do not remain on the technical terminal: they are delivered in consultation format. Only a complete documentation allows to maintain the integration between mechanics, high voltage and services during the passages of ownership or assistance.
Maintenance for hours, cycles and calendar
Diesels follow hours and calendar; batteries also cycles, temperatures and state of health; panels and connectors require cleaning and inspection. Pumps, gaskets, fire extinguishers and valves are also aged by boat. The plan must combine these stairs without duplicating or forgetting activities. Pictures, fluid analysis, test curves and alarm history form a basic line. A change in consumption or temperature thus becomes a measurable signal, not a reported sensation after failure.
Final configuration assessment
The Greenline 48 Fly is convincing when the configuration remains consistent with the mission. Three cabins, 1,500 liters of fuel, storage up to 80 kWh and solar up to 1.6 kW offer many possibilities, but each adds verification. The best choice does not maximize every item: balances weight, production, consumption and accessibility. A testing that measures transitions, energy for mileage and contemporaneity of services transforms official statements into tools useful to the shipowner.