The shipyard Marex: a history of sea and family
Marex's history began in 1973, when Eyvin Aalrud founded the construction site on the banks of Sørlandet, the southern coast of Norway. Since the beginning, the goal is to build robust, functional and suitable vessels
severe Nordic weather conditions. The password is “reliability”. The Eighties and Nineties see
the assertion of models become iconic — like the Marex 280 Holiday or 375 — that consolidate the reputation of
brand for constructive solidity and attention to ergonomics.
Today Marex is still managed by the Aalrud family, with the second generation at the helm: Espen and Thomas Aalrud. The
yard is based in Arendal and maintains a craft production with very strict quality controls. Every yacht is
built on orders, with customizations ranging from wood essences to technical installations. The objective
declared for the 390 is to “definite a new standard for the concept of family cruiser”, offering the comfort of a
large yacht in small size.
Design philosophy: the cruiser for all seasons
The Scandinavian approach to nautical is profoundly different from the Mediterranean. In northern regions the boat is not only a summer leisure tool, but a means of transport and daily life. This is reflected in every aspect of the project: thermal insulation, energy management, protection from elements, but also long-term efficiency and simplicity of maintenance. The Marex 390 was born to be lived in every season, even in winter, thanks to its deckhouse closed and heated, which allows you to navigate in full comfort even with temperature
external under zero.
The design style follows the Scandinavian principle “form follows function”: no element is purely decorative,
everything has a practical function. The interior spaces are ergonomic, free of waste and designed to offer maximum
liveability also on a long cruise. Each surface is designed to be useful, every detail is optimized for
last over time and simplify your life on board.
Shipbuilding and construction materials
The hull: the heart of the Marex 390
The project of the 390 introduces a new generation of famines “variable-V hull”, direct evolution of hulls
Marex 360 and 375. In the bow, the angle of deadrise reaches 20°: this allows to cut the wave gently,
avoiding the brusque impacts typical of the planant famines as well. In the central section, the V is gradually reduced
up to about 13° aft, thus offering stability in planata and less resistance to progress.
This architecture, combined with a moderate glare and a low gravity center, gives 390 behaviour
in extremely balanced water. In navigation at 25 knots, the yacht maintains an almost horizontal trim, with
a minimum trim angle. This reduces consumption, vibration and fatigue for the timoniere, increasing safety in
coastal or offshore navigation.
Materials and construction process
The hull is made in laminated fiberglass with vacuum infusion with vinyl resins and reinforcements in multidirectional fibers. This technique guarantees a perfect resin/glass ratio, eliminating air bubbles and increasing laminate rigidity. The structural bulkheads are made of high density PVC sandwiches, while the longheroni are made in one piece with the lower shell, without joints.
The superstructure uses composite materials with carbon fiber inserts in areas of higher stress
(hard-top and lateral arches). This allows you to reduce weight in the upper part, improving cross stability. The bridge and the tramplable surfaces are covered in synthetic teak or, at your choice, in real seasoned teak, treated with natural oils anti-UV.
All hull-cover joints are glued and laminated, without use of bolts passing, ensuring stiffness and
sealed. The result is a silent and vibration-free structure even at prolonged cruising speed.
Internal structure and insulation
Another distinctive feature of the Marex construction is the attention to thermal and acoustic insulation. The 390 uses sandwich panels with expanded PVC core for internal bulkheads, while the bulkheads between room machines and cabins are
coated with three-layer sound absorbent material. The result is an average noise reduction above 30 dB,
that allows to maintain normal conversations even with engines running at 2000 rpm.
Cover design and functional layout
The Marex 390 deck layout is a balance between safety and comfort. The well, wide and protected,
can be completely closed thanks to glass panels and curtains in technical fabric, turning into a living room
outdoor viable also with rain or wind. The wide side loops and the high parapet ensure movements
safe for children or less experienced guests.
The stern bridge, integrated with the bathroom platform, offers retractable ladder, shower and fixing points for
tender or water bike. There is also a large gavone under the bridge for storing parabords and peaks.
Command Plan and Instruments
The Marex 390 dashboard is designed for intuitive and comfortable use. The main driving place, with
cushioned and adjustable seat, is flanked by a sofa for two passengers. The instrument panels are arranged
horizontally for immediate reading, and 360 degree visibility also ensures safety in maneuvers
mooring.
- Garmin 16” multifunction display with integrated GPS, radar and AIS
- Joystick Volvo Penta IPS or double lever V-Drive
- Digital autopilot with automatic route correction
- Digital control of trims and propellers
- Integrated alarm system and rear camera
Engines and propulsion systems
The range of motorizations Marex 390 reflects the modular philosophy of the construction site: offering different configurations that balance power, autonomy and simplicity of maintenance. All versions adopt engines Volvo Penta of last generation, guarantee of reliability and low consumption.
- Standard: 2 × Volvo Penta D4-320 HP (640 HP total, V-Drive transmission)
- Optional: 2 × Volvo Penta D6-380 HP (760 HP total)
- High Performance: 2 × Volvo Penta D6-480 HP (960 HP total, under approval)
I D4 and D6 belong to the new common-rail series with EVC 2 electronic management, which optimizes combustion and
reduces vibration and noise. V-Drive transmissions, combined with variable-pass propellers, guarantee an excellent
acceleration push and stable trim even with high loads. In future versions, the 390 will be compatible
with “mild hybrid” hybrid drives developed with Volvo Penta for the E-Drive range.
Performance and behaviour at sea
Preliminary tests conducted in the North Sea showed amazing performance for a boat of this
category. With engines D4, the Marex 390 it reaches 28 knots of maximum speed; with the D6-380 it climbs to 31 knots, while the optimal cruising speed is around 22-24 knots. The acceleration from zero to planata takes place in about 7 seconds. At 18 knots, combined consumption stands at 3.7 liters/mill, equivalent to about 220 nautical miles of autonomy.
The navigation system is neutral, the boat enters the bridge without “saws” and keeps the horizon perfectly
visible. The wide circles show a regular and predictable radius, while the behaviour with sea size is
surprisingly soft: the variable V hull cuts the wave with elegance, avoiding dry impacts. Also in
narrow turns to 25 knots, side stability remains controlled, sign of an excellent hydrodynamic balance.
Onboard systems and management
The Marex 390 is equipped with a 24 V electrical system with high capacity AGM batteries, managed by a digital control system Smart Power Monitor. The optional 6 kW generator allows you to keep active air conditioning, kitchen and multimedia systems even in satin. The arrangement for solar panels integrated on the rigid roof is planned.
- Main Electric Square with quick fuses and motor/service separation
- Water system with variable pressure pump and UV filter for drinking water
- Tanks polyethylene with digital level sensors
- Air conditioning system closed circuit, 16 000 BTU
- Sentry pumps automatic with acoustic and optical alarm
All channeling and cables pass into inspectable corridors. This typically Nordic technical approach
reduces maintenance costs and allows rapid operations even on board.
Comfort and liveability on board
One of the most surprising aspects of 390 is the perceived comfort during navigation. Vibrations are minimal
thanks to the elastic coupling of the motors, while the acoustic insulation guarantees lower noise levels
70 dB in the living room at 22 knots. The rear well, closed by glass panels and sliding curtains, becomes a
’ natural extension of the living room, ideal for family lunches or evenings in port.
Living room
The main living room is dominated by large glass surfaces that offer panoramic 360° views. The central table,
height adjustable, can be converted into an additional double bed. The kitchen is equipped with plan
induction, 130 L refrigerator, double sink and light oak cabinets. Each space is exploited rationally:
under the sofas there are large storage rooms, while the raised floor hides a technical cabinet accessible for the maintenance of water systems.
Cabins and sleeping area
The lower deck houses two double cabins: the forward shipowning, with queen-size central bed, side cabinets
and private bathroom, and that guest in the center of the boat, with two single beds convertible into double. Both have natural lighting thanks to openable doors and forced ventilation. The bathrooms are complete with separate shower, electric toilet and ceramic sinks.
External design and ergonomics
The external style of the Marex 390 resumes the sober and proportioned lines of the Nordic tradition. The high bow and
sharp guarantees protection from the sea, while the low superstructure reduces wind resistance. The hard-top
integrated hosts a wide openable sky-light manually or electrically. Steel handles, wide loops
and the poppiera platform at sea level reflect the philosophy “safety first”.
Ergonomics and visibility
The main driving place, with adjustable seat and padded armrests, allows a perfect government position
both standing and sitting. The visibility is total: thanks to the continuous windows and the thin pillars, the timoniere has full control of the route also in maneuver. Electronic controls are positioned with ergonomic logic, and lateral access to the bridge allows the shipowner to manage the mooring alone.
Innovation and sustainability
The Marex 390 is one of the first yachts of the yard designed according to LCA criteria (Life Cycle Assessment).
Each phase of the life cycle — from production to the end of the material life — has been analysed to reduce emissions and
environmental impact. The use of recyclable materials, low emission epoxy glues and water-based paints
testify to the commitment of the yard towards a more responsible production.
- Recycled PET fiber insulation
- FSC certificates
- Anti-UV and anti-osmotic synthetic coatings
- Packaging recyclable for all internal components
The result is a boat not only more efficient, but also lighter and longer lasting. Total CO2 emissions
produced during construction, it is reduced by 25 % compared to the previous models of the range.
Comparative analysis: the direct competitors of Marex 390
The motoryacht segment between 11 and 13 meters is today one of the most competitive in Europe. The Marex 390 is part of a market where construction tradition, technological innovation and cultural differences between the Nordic and the Mediterranean are coexisting. To understand its technical and commercial positioning, it is worth comparing it with some of the reference models: Azimut Magellano 40, Nimbus 405 Fly e Sargo 36 Explorer.
| Model | Length f.t. | Motorization | Carena | Max speed | Indicative price (VAT excl. ) |
|---|---|---|---|---|---|
| Marex 390 | 12,00 m | 2× Volvo Penta D4/D6 (320–480 HP) | Variable-V planant | 31–32 nodes | from € 580.000 to € 750.000 |
| Azimut Magellano 40 | 12,96 m | 2× Cummins 355 HP | Semi-dislocating | 22 knots | from € 750.000 |
| Nimbus 405 Fly | 13,33 m | 2× Volvo Penta D6 380 HP | Planante | 27 knots | from € 720.000 |
| Sargo 36 Explorer | 11,80 m | 2× Volvo Penta D6 340 HP | Deep-V | 30 knots | from € 590.000 |
Some key evidence emerges from comparison. The Azimut Magellano 40 favours comfort and autonomy at the expense of speed, focusing on a displaced navigation philosophy. The Nimbus 405 Fly is for those who want
vertical spaces and a compact flybridge, while the Sargo 36, more sporty, preserves a “offshore” soul.
The Marex 390 manages to merge the best of these worlds: cruiser comfort, sport-yacht handling and
higher energy efficiency
Market and target of reference
The audience of the Marex 390 consists mainly of experienced shipowners or mature couples looking for a boat
compact but complete, easy to manage even without crew. The focus is on usability and long-term comfort
term: weekly sailings, summer cruises or short transfers throughout the year.
The 390 is designed for those who want a boat to live, not to exhibit — a philosophy perfectly in line with
nordic ethics.
In Europe the model finds fertile ground in countries like Norway, Sweden, Germany and the Netherlands, where cruisers
closed represent more than 60 % of the market of 12 meters. Even in the Mediterranean demand is growing, thanks
increasing attention to climate comfort and the extension of the nautical season up to 9 months a year.
Value in time and management
One of the strengths of the Marex brand is the hold of value over time. The models produced by the construction site
over the last twenty years, they showed an average devaluation of 15 % after 5 years, compared with 25–30 % of average
compartment. This is due to the construction quality, the availability of spare parts and the simplicity of the systems
edge. For shipowners who consider the boat an investment, the 390 represents a concrete option also on the plane
financial.
Press recognition and reviews
The official presentation of the Marex 390 at Boot Düsseldorf 2024 aroused great interest. Motor Boat & Yachting he called it “a concentrate of ergonomics and constructive intelligence”, while Boots Magazin he has
highlighted “the linearity and mechanical precision in every detail”. Yachting Magazine it included among the ten most interesting yachts of the 2025 season for efficiency and design.
Development and innovation perspectives
The yard has announced concrete plans to expand the technical platform of 390 towards hybrid versions and
full-electric. Already in 2026 a prototype equipped with a parallel hybrid system with 60 kWh lithium batteries
and autonomy in 100 % electric mode up to 25 nautical miles. In parallel, Marex is collaborating with Norwegian companies specializing in recycled materials to reduce emissions by 30 % during the production process by 2030. From a commercial point of view, the 390 also serves as the basis for a future modular range: the hull is already prepared to accommodate longer configurations (up to 13.2 m) and “Explorer” variants with extended autonomy. The goal is to consolidate Marex in the premium segment between 11 and 14 meters, traditionally dominated by Italian and British manufacturers.
Sound, thermal and safety comfort
The acoustic insulation of the Marex 390 is higher than the category average: 68 dB in the hall at 22 knots and 72 dB in the
shipyard cabin. Multilayer composites and the use of anti-vibration coatings
machine room significantly reduces the perceived noise.
Thermal comfort is guaranteed by double glazing and gas heating Webasto, in addition to reversible air conditioning
for warm climates. Security systems include CO sensors, automatic fire alarm, bilge pumps
redundant and flood indicators in each compartment.
Management and maintenance
The construction site designed 390, thinking of the owner’s self-sufficiency. All main components are
accessible by inspectable panels; the engine room, although compact, allows complete removal of engines
without the need to dismantle the superstructure.
The ordinary maintenance plan includes replacing filters, impellers and anods in less than four hours of work. The
possibility to use remote monitoring systems allows to control battery voltage, tank levels and
internal temperature via mobile app.
Analysis of technical and perceived value
From the engineering point of view, the Marex 390 introduces an optimized naval architecture that balances the hull
planant and stability of semi-dislocating hull. This solution reduces hydrodynamic resistance by 12 % and improves
the route seal at low speeds.
From the emotional point of view, however, the boat communicates solidity and serenity: a floating shelter more than a simple
means of transport. The value perceived by the shipowner does not derive only from the finishing or materials, but from the sense of
reliability that the boat transmits immediately as soon as it sets foot on board.
Conclusions: a cruiser for the future
With 390, Marex renews the tradition of Nordic cruisers and offers the market a boat able to combine comfort,
efficiency and safety in a manageable and refined format. The variable-V hull, efficient motorizations
modular construction and attention to sustainability make this boat a reference for those looking for a
serene, silent and environmentally friendly navigation.
For industry professionals, Marex 390 is a case study on how intelligent design can
enhance small dimensions without sacrificing the comfort of a large yacht. For the shipowners, it is a promise
maintained: a faithful companion, able to adapt to every season and to every sea, with that elegant sobriety that
only the scandinavian school can express.