Driving Decarbonization with Data: Union Maritime’s SeaLabs

In our latest Seathrough Efficiency episode, hosted by Caroline Evert, our Business Development Manager, we spoke with Kishan Mutu, Head of SeaLabs, about how Union Maritime is scaling sustainable tech through structured planning and data-driven decisions. Some of the key points are:

- Wind-Assisted Propulsion: 5 vessels equipped, 30 more committed

- High-frequency data + ROI modeling = smarter investments

- Proactive retrofits: planning starts 12 months before dry dock

Key takeaway: Innovation isn’t just tech, it’s process. SeaLabs is a blueprint for navigating uncertainty and leading the low-carbon transition.

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What happens when sustainability stops being a reporting exercise, and becomes a driver of performance, innovation, and growth?

In this new episode of Seathrough Efficiency, we sit down with Lola Caballero, Chief Sustainability & Performance Officer at Cadeler, to explore how one of offshore wind’s leading players is integrating sustainability into every decision, Lola shares how Cadeler is:

- Addressing carbon intensity through smarter fleet upgrades, data-driven efficiency, and crew engagement.

- Designing new-generation vessels ready for future fuels and shore power.

- Turning operational data into actionable insights to measure and scale real impact.

- Building a culture where sustainability is a “team sport”, powered by collaboration across crews, clients, and the wider industry.

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In this episode, Steen Sander Jacobsen, Technical Director at Njord, joins us to unpack what MEPC 83 means for the industry, and why waiting for regulation could mean missing the opportunity that’s right in front of us.

While the IMO’s Net Zero framework discussions have been extended into next year, Steen shares a reminder: “Regulation will evolve, but efficiency already makes business sense today.”

In this conversation, we cover:

1. The significance of MEPC 83’s delayed outcome for shipowners
2. What actions can be taken under existing frameworks like EU ETS or FuelEU Maritime
3. The growing collaboration between shipowners, charterers, financiers, and ports
4. Why planning your next drydocking cycle could define your decarbonization journey

The path to net zero may not yet be fully mapped, but every voyage starts with a first move.

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In this episode of Seathrough Efficiency, we speak with Nikos Benetis from Greenheart, part of the Hayfin group, about how retrofit strategies go beyond compliance — and start with values.

Key themes from the conversation:

• Efficiency is a mindset: Greenheart’s team is driven by doing the right thing, not just ticking regulatory boxes.
• Retrofit starts with transparency: Sharing performance data and lessons learned is central to their approach.
• Due diligence with purpose: Vessel performance is as critical as financial modeling when evaluating fleet investments.
• Learning loops matter: Retrofit success comes from observing, evaluating, and evolving — not just installing tech.
• Partnerships are key: Shipowners, suppliers, and consultants all play a role in shaping smarter vessels.

Greenheart shows how environmental action can be embedded in every decision — from second-hand vessel upgrades to newbuild ESG planning.

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In our latest podcast episode, we spoke with Patricia Ayoub from DOF about their decarbonisation strategy and the lessons learned from bringing two fleets together.

Patricia outlined three clear pillars guiding DOF’s approach:

1. Operational efficiency – optimising how vessels are run day to day
2. Technology upgrades – deploying smart tools and hybrid solutions
3. Fleet renewal – investing in next-generation vessels
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Key points stood out:

1. Small, incremental changes add up to significant impact over time
2. Transparency on vessel performance builds trust across stakeholders
3. Managing efficiency at scale after a major fleet merger requires discipline and collaboration

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In this episode of Seathrough Efficiency, Saurabh breaks down what we learned from installing Wind Assisted Propulsion - not theorising about it.

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We will cover our FIVE biggest learnings, so if you're considering wind for your fleet, this one is worth a listen. It's honest, specific, and focused on what matters when you move from plan to practice.

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In this episode of Seathrough Efficiency, we speak with Martin Wattum, Head of Energy Efficiency Projects at Klaveness Combination Carriers, about turning energy efficiency from a strategic priority into operational reality.

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It’s a practical look at how Klaveness is aligning daily operations with long-term sustainability strategy.

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We’re unpacking the lessons from a one-of-a-kind project that pushed the limits on energy efficiency. The One Of A Kind Retrofit That Taught Us What Works, So You Don’t Have To Guess , and how it’s still shaping the way we help shipowners decarbonise today.

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We sat down with Frederik, Managing Director at Njord, to talk about what boards really want to hear when you pitch a retrofit.

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If you're involved in planning, approving, or pitching retrofit projects - this one's for you.

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