At Greenline Yachts, the boat programme starts with a 39-foot version and ends with the flagship OceanClass 68 Fly. Our test boat, the 45 Fly, is in the lower mid-range and is also available as a coupé version. For the test boat, the drive and power supply are decisive, as we are travelling with the hybrid version. Greenline calls it the H-Drive system. The boat is equipped with a specially developed motor-generator system that drives the Greenline electrically and acts as a generator when travelling with the two diesel engines. The installed 4 x 11.4 kWh batteries (totalling 45.6 kWh) are charged with around 2 x 14 kW in combustion mode.
The batteries are also powered by solar panels on sunny days. Two 320-watt modules are installed on the test boat; the system can be expanded (additional solar cells on a T-top) to an output of 1.87 kW. If you opt for the coupé version, you can have modules with 2.88 kW installed and have even more green electricity available.
Greenline relies on hotel mode for the 45 Fly Hybrid
The energy is stored in four LiPO hybrid batteries (56 volts), which are not only intended for environmentally friendly cruising, but also for the so-called hotel mode. The large energy storage unit also has the advantage that you don't have to run a generator when mooring, but can use an inverter to supply the 230 V appliances for longer periods of time. In the 230 V department, the air conditioning system is the biggest energy guzzler. A "tropical air conditioning system" (46,000 BTU, switchable) is installed on the test boat. Greenline Yachts gives the average consumption for 24 hours on a sunny, warm day as 26.312 kWh (in ECO mode). If the cooker, fridges and consumption for normal life on board are added to this, the shipyard puts the average energy consumption within 24 hours at around 34 kWh.
Daily routine on board
We carried out the practical test and spent just under a day on the test Greenline. During the day, with an outside temperature of around 23 °C, we were on board with three people. We spent the night in pairs, each in a cabin. Here are the most important points on the two test days: We started with a charge level of 95 per cent at around 12:00 noon (with e-drive). We then recorded the electric driving values on the Mediterranean off Palma de Mallorca and drove to the anchorage in diesel mode at around 12:40 (at 87 per cent). We dropped anchor there at around 13:10 and kept the refrigerators and air conditioning running normally. We weighed anchor again at around 15:00 and at 15:20 the driver moored in the harbour of Porto Portals - and the control display was at 82 percent.
Note: The shore connection was not connected. I switched the oven on at 200 °C in the harbour for about an hour. After that, the display was at 75 and at 19:30 at 62 per cent. The next morning we set sail with the electric motors and the display was at 39 per cent before the driver started the diesel engines behind the harbour exit. After about an hour, the batteries were charged up to 97 per cent again. During the charging process, the batteries are charged quite quickly at the beginning; towards the end, as with other systems, the process slows down. The additional consumption of the two Yanmar engines is around 4 litres per hour per engine at the highest charging level (around 14 kW).
The test drive
The Greenline can be driven from either the saloon or the flybridge driving position. Two large monitors (per instrument panel) on the test boat are responsible for displaying sailing data such as speed, fuel consumption and the remaining sailing time at the current speed. The engines and steering can be operated without restriction at both control stations. The bow and optional stern thruster guarantee easy handling when manoeuvring in the harbour.
Of course, the ranges with the electric drives are not huge; at 5.0 knots, for example, it is a good 9 nautical miles plus 15 per cent reserve. This operating mode is ideal for getting safely out of and into harbours, sailing into natural harbours with less noise or simply covering a distance quietly. Longer distances are travelled with the two diesel engines. The recommended speed for this is 18.5 knots with a fuel consumption of 5.3 litres per nautical mile. With a tank capacity of 1,500 litres, this results in a range of a good 240 nautical miles plus 15 percent reserve. At 8 knots, the range is around 670 nautical miles. On the second day of testing in the Mediterranean off Palma, the sea was quite choppy. At around 18 knots, we were able to navigate the waves with good course stability and moderate spray. The hull also behaved safely in fast bends without rocking or pitching.
Layout on board the Greenline 45 Fly Hybrid
When the weather is fine, the Greenline offers a great view from the flybridge. A total of four cameras were installed on the test boat, two of which looked aft so that the stern could also be clearly seen when mooring. One camera was installed in the bow and one in the engine compartment. The same video surveillance can also be activated at the saloon helm. Here, the skipper sits protected behind a safety glass pane with two windscreen wipers. A door next to the driver guarantees direct access to the side deck.
The 45 Fly is offered in a two- or three-cabin version. We sailed the version with three cabins and a double bed in the guest cabin on the starboard side. Two single berths are also possible. In the bow is the VIP cabin with a double bed and direct access to the guest wet room. This wet room has the same comfort features as the bathroom in the owner's cabin. The latter is laid out across the entire width of the boat and offers a large double berth and plenty of storage space.
Socialising on the main deck takes place on a comfortable seating unit in the saloon on the port side. A sideboard with television is located on the opposite side. The galley area is located aft and can be opened towards the stern via a large window, making it easily accessible from the cockpit. Behind the cockpit with seating unit and table is the area for bathing enthusiasts on a large platform with optional hydraulic equipment.
Exemplary: the access points on both sides can be closed with doors. The shipyard has placed a large sun lounger on the foredeck, while a bimini roof on the foredeck and flybridge of the test boat protects against excessive sunlight. The latter is equipped with sun cushions, a seating area and a wet bar.
Technical data
- CE category: B
- Length over everything: 15,57 m
- Width: 4,57 m
- Displacement: approx. 13.5 tonnes
- Draught (empty): 1,10 m
- Clearance height: 4,16 m
- Fuel tank: 1.500 l
- Batteries: 4 x H-drive batteries with 11.4 kWh solar cells each2 x 320 W
- Inverter Charger: 5,000 VA/100A
- Test motorisation: 2 x Yanmar 8LV 370 hp (272 kW), 2 x electric motor 23 kW (as generator 14 kW)
- Base price ex shipyard with test engine and hybrid equipment: 895.254 €
- Distribution test boat: argoyachting.com
Measurement results
| Speed rpm | Speed kn | Consumption kWh/sm | Range sm | Volume dB(A) |
| 620 | 3,0 | 2,30 | 16,9 | 46 |
| 1.000 | 5,0 | 4,20 | 9,2 | 49 |
| 1.300 | 6,3 | 6,83 | 5,7 | 54 |
The most important consumer and power connections
24 V
- Lighting
- VHF radio
- Motorised blower
- Flybridge refrigerator
- Fresh water
- Instruments
- Trim tabs
- Horn, searchlight
- Radio, 12 V socket
- Autopilot
230 V
- Air conditioning (controls, cabins and saloon)
- Oven
- Cooker
- Grill (Flybridge)
- Ice cube maker
- Water heater
- Fridge pantry
- Washing machine/dryer
- Dishwasher
- Battery charger
- Sockets lower deck
- Main deck sockets
- Entertainment systems
Conclusion
The Greenline 45 Fly Hybrid is a pioneering way to travel. The three-cabin version can comfortably accommodate six people. There are plenty of comfortable seating and lounger combinations in the outdoor area. The "hotel mode" guarantees a quiet, pleasant life on board without generator operation.
Advantages
Easy to manoeuvre with bow and stern thruster
Quiet ride with the electric motors
Plenty of space and comfortable living
