Meet Chief Engineer: Malekakis Dimitrios

As Chief Engineer, Malekakis Dimitrios is responsible for the safe, efficient and compliant operation of all technical systems onboard the superyacht while under his care. From a machinery standpoint, this covers propulsion, power generation, electrical distribution, HVAC, hydraulics, water production, sewage treatment and hotel services systems.

Beyond machinery, Malekakis manages planned maintenance, class and flag compliance, budgeting, refit planning and contractor coordination. All of this, of course, alongside the leadership and development of the Engineering Team. Malekakis takes pride in ensuring the yacht operates safely and efficiently to support management objectives and to exceed the owner’s expectations.

What systems or routines are most critical to keeping a yacht running reliably during owner trips and charters?

Reliability comes down to disciplined preventive maintenance and monitoring of all systems – main engines, generators, fuel systems, cooling systems, electrical distribution, stabilisers, steering systems and HVAC.

Our engineering crew carries out daily rounds, trend analysis, oil sampling and vibration monitoring, all while strictly adhering to planned maintenance schedules. Anticipation prevents disruption.

How has engine room technology evolved in recent years, and how has that changed day-to-day operations?

We’ve seen major advances in integrated monitoring systems, remote diagnostics, hybrid propulsion, battery banks, variable frequency drives and automation systems. This evolution requires engineers to be both mechanically and electrically proficient and to have strong IT awareness. Modern yachts demand hybrid skillsets now more than ever.

What’s the most common misconception guests have about the engine department?

Many assume we only deal with engines. In reality, we are responsible for everything that makes the yacht function as a floating luxury hotel, from air conditioning and water quality to lighting, AV systems, stabilisation, and more.

When something fails at sea, what qualities define an excellent engineer?

Safety is always the first priority. The most effective engineers combine composure under pressure with structured problem‑solving, deep technical insight, clear communication and sound risk judgment.

The components that separate a well-run engine department from an average one all come down to the collaboration of thoughtful engineers. Qualities include: a strong preventive maintenance culture, organisation, accurate documentation, spare parts control, continuous training, and transparent communication with the captain.

How do you balance performance, efficiency and long-term machinery health?

By running machinery within optimal load ranges, avoiding light-load operations, monitoring temperatures and pressures, and prioritising long-term asset protection over short-term performance. By planning well, we address these aspects naturally as we execute our duties.

Where are you seeing the most meaningful moves toward sustainability in yacht engineering?

It’s essential that yachting becomes more sustainable. The most meaningful developments in making that a reality that I’ve witnessed include the advent of hybrid propulsion systems, battery-assisted load management, shore power, advanced wastewater treatment and improved hull coatings to improve fuel efficiency.

What are the biggest engineering challenges in delivering “next-level” features like smart cabins, wellness facilities and motion-reduction technology?

The biggest challenges in delivering next-level features lie in managing much higher electrical loads and ensuring robust redundancy, noise and vibration control and stable power for sensitive electronics. At the same time, we have to integrate all of these systems into a cohesive automation platform, so they communicate reliably and work together seamlessly from the passenger’s perspective.

How does the engine crew contribute to guest comfort, even without direct guest interaction?

The engine crew plays a crucial behind-the-scenes role in ensuring a smooth and enjoyable guest experience by maintaining the ship’s stabilisation systems for a steadier ride. For example, by operating generators as silently and efficiently as possible to reduce noise and vibration and managing precise climate control so public areas and cabins remain consistently comfortable.

How important is communication between the bridge and the engine room, and how do you make that relationship work smoothly?

Communication is absolutely critical for safe manoeuvring, efficient power management and rapid response to any technical issue. Daily briefings and mutual trust are integral for maintaining operational excellence.

What should owners or family offices be asking about a yacht’s engineering setup before purchasing a superyacht?

When viewing a superyacht, the following should be reviewed: Service history, engine hours, generator load history, compliance status, wiring condition, spare parts inventory and forecasted refit costs.

What is the greatest lesson you’ve learned at sea?

Preparation is everything. Most emergencies can be prevented through disciplined maintenance and planning.

Where is your favourite place to travel and why?

The Mediterranean, of course, has some exceptional cruising grounds. It also offers operational diversity some challenging logistics, which always makes things interesting.

What advice would you give a young engineer hoping to become a chief engineer one day?

My advice would be to master fundamentals. You should never cut corners and should thoroughly understand electrical systems. Keep and maintain detailed records and try and develop your leadership skills early on. Above all else, always stay curious.