Seathrough Efficiency is a podcast that cuts through the noise in maritime sustainability. Each episode tackles common misconceptions surrounding Energy Efficiency Technologies (EETs) and brings clarity to what actually works—and why.
Whether you're a shipowner, charterer, or just curious about green tech at sea, we break down the facts, challenge outdated assumptions, and share real insights from experts navigating the energy transition in shipping.
International Seaways on Making the Business Case for Decarbonization
What makes a decarbonisation investment worth it?
In our latest Sea Through Efficiency episode, we sit down with Lina Tenenbaum, Lead Sustainability Engineer at International Seaways, to explore how the company approaches decarbonisation across its fleet.
From energy efficiency and emerging technologies to vessel performance, data and ROI, we discuss why the right solution is rarely the same for every vessel, and how a strong understanding of the fleet can help turn potential opportunities into sound business decisions.
“We look at everything that’s out there, but we have to assess it on a case-by-case basis.”
A conversation about looking beyond the technology itself, and focusing on what actually makes sense for the vessel, the operation and the business.
2 Jul 2026
Making Decarbonization Decisions in an Uncertain Market
How do you invest in decarbonization when the future is still uncertain?
That was one of the key questions we explored in the latest episode of SeaThrough Efficiency, where we spoke with Richard Tyrrell
The conversation goes beyond the usual discussion around regulations and alternative fuels. Instead, it focuses on the practical decisions shipowners are making today.
🎙️ In this episode, we discuss:
• Why regulations like CII have changed behaviour, even if they're far from perfect.
• The challenge of investing in technologies for assets that will operate for decades.
• Why operational efficiency remains the strongest foundation for decarbonization.
• The realities of alternative fuels, and why point-to-point corridors may be the most practical path forward.
• The critical role of reliable data, verification and transparency in building confidence to invest.
As Richard puts it:
"There's a real need for good data, verification and certification processes that give people the confidence to invest."
The transition to net zero won't happen through a single breakthrough. It will be driven by thousands of practical, data-backed decisions that improve efficiency today while preparing for tomorrow.
How do you invest in decarbonization when the future is still uncertain?
That was one of the key questions we explored in the latest episode of SeaThrough Efficiency, where we spoke with Richard Tyrrell
The conversation goes beyond the usual discussion around regulations and alternative fuels. Instead, it focuses on the practical decisions shipowners are making today.
🎙️ In this episode, we discuss:
• Why regulations like CII have changed behaviour, even if they're far from perfect.
• The challenge of investing in technologies for assets that will operate for decades.
• Why operational efficiency remains the strongest foundation for decarbonization.
• The realities of alternative fuels, and why point-to-point corridors may be the most practical path forward.
• The critical role of reliable data, verification and transparency in building confidence to invest.
As Richard puts it:
"There's a real need for good data, verification and certification processes that give people the confidence to invest."
The transition to net zero won't happen through a single breakthrough. It will be driven by thousands of practical, data-backed decisions that improve efficiency today while preparing for tomorrow.
🎧 Listen to the full episode and join the conversation.
#MaritimeInnovation #ShippingTechnology #SeaThroughEfficiency
28 May 2026
MarineFifty & Njord: Bridging Capital Technology & Maritime Decarbonization
Innovation is no longer the challenge in shipping. Adoption is.
In the latest episode of Seathrough Efficiency, we sat down with Krishnan Narayanan to discuss the newly announced collaboration between MarineFifty and Njord, and why the industry is entering a new phase focused on scalable, measurable efficiency solutions.
From independent validation and real-world performance measurement to the role of collaboration in accelerating decarbonization, the conversation explores why energy efficiency technologies are becoming one of shipping’s most practical “no-regret” pathways forward.
“What the industry really lacks is a consistent, trusted way to validate performance in the real world, without that, scaling technologies becomes extremely difficult.” - added Krishnan
9 Apr 2026
Navigating Fuel EU Maritime
FuelEU Maritime is here, but compliance is far from straightforward.
In this episode, we break down how the regulation works, the key timelines to keep in mind, and the different pathways to stay compliant, from pooling and banking to biofuels and beyond.
We also explore what really matters: how to choose the most cost-effective strategy depending on your vessel, trading pattern, and access to fuels.
Because under FuelEU, compliance isn’t just about avoiding penalties, it’s about making smarter commercial decisions.
19 Mar 2026
Navigating Maritime Decarbonization: Regulation and the Fragmentation Challenge
Navigating maritime regulation just got more complex
In our latest podcast, we spoke with Francesco Sandrelli, Policy Director for Environment at the UK Chamber of Shipping, about the evolving regulatory landscape and what it means for shipowners and operators.
Key takeaways:
Fragmentation is real: International vessels now juggle multiple emissions schemes and local requirements.
Data drives compliance: Performance metrics and operational strategies are central to staying on top of regulations.
From targets to action: Global climate goals are clear, but turning them into fleet-ready solutions is the challenge.
Decarbonization isn’t just about technology, it’s about navigating complex regulations, monitoring data, and making strategic decisions across your fleet
25 Feb 2026
Uncertainty, Regulations & Decarbonization. Insights from Danish Shipping
In our latest episode of SeaThrough Efficiency, we speak with Nina Porst, Executive Director for Sustainable Ships and Skills at Danish Shipping, about how shipowners are approaching decarbonization in a complex and evolving regulatory landscape. The conversation explores:
The role of national and international regulation, including developments at the International Maritime Organization
Why regulatory clarity is essential for long-term investment decisions
What actions are available to shipowners today, particularly within energy efficiency and retrofits
Rather than focusing on long-term scenarios alone, the discussion centres on practical steps that can be implemented now, while the broader fuel transition continues to develop.
4 Feb 2026
A New Chapter: Njord Joins V.Group to Scale Decarbonization
In our latest SeaThrough Efficiency episode, Managing Director Frederik Pind shares what Njord’s acquisition by V.Group means for our mission, and for the industry’s journey toward net‑zero.
With MEPC 83 postponed, uncertainty has grown, but the need for decarbonization hasn’t changed. By combining V.Group’s global compliance and operational expertise with Njord’s specialization in energy efficiency technologies, we’re building a stronger, end‑to‑end decarbonization platform for shipowners worldwide.
19 Jan 2026
Keys to energy efficient shipping: Insights from the World Bank report
In our latest episode of Njord’s Podcast, we speak with Sophie Parker, Transport Economist at the World Bank, about how energy efficiency can accelerate emissions reductions in shipping.
The discussion explores why efficiency measures, across operations, ports, and onboard technologies, remain one of the most actionable levers available today, while also highlighting the organizational and commercial challenges that slow adoption.
Key topics include:
The impact of operational and port efficiency on emissions
Why organizational readiness matters as much as technology
How data, financing models, and standards can support wider uptake
Listen to the full episode to explore how shipping can move forward through efficiency.
16 Dec 2025
Why Energy Efficiency Still Leads Shipping’s Decarbonization
2025 was a pivotal — and at times frustrating — year for maritime decarbonization.
In this episode of Seathrough Efficiency, Njord’s Managing Director Frederik Pind reflects on the momentum, delays, and lessons that defined the year, and what they mean for shipping as we move into 2026.
The discussion explores why regulatory uncertainty from the IMO continues to challenge the industry, why energy efficiency remains a no-regret pathway regardless of policy timelines, and how wind-assisted propulsion emerged as one of the most commercially impactful technologies in 2025. The episode also highlights a critical but often overlooked barrier to decarbonization: organizational alignment and decision-making within shipping companies.
Looking ahead, the conversation unpacks what shipowners and operators should prepare for in 2026 — from increasing regulatory complexity and regional carbon pricing schemes to the growing importance of acting early rather than waiting for perfect clarity.
This episode is essential listening for anyone navigating shipping’s transition to a low-carbon future.
4 Dec 2025
Scaling Wind at Sea: SeaLabs’ Blueprint for Decarbonizing Shipping
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.
21 Nov 2025
Sustainability as a Performance Engine
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.
23 Oct 2025
MEPC 83: A pause for policy, not for progress
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:
The significance of MEPC 83’s delayed outcome for shipowners
What actions can be taken under existing frameworks like EU ETS or FuelEU Maritime
The growing collaboration between shipowners, charterers, financiers, and ports
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.
2 Oct 2025
Greenheart’s Retrofit Playbook, Making Efficiency a Shared Goal
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.
11 Sept 2025
Clear intentions: How transparency drives DOF´s decarbonization strategy
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:
Operational efficiency – optimising how vessels are run day to day
Technology upgrades – deploying smart tools and hybrid solutions
Fleet renewal – investing in next-generation vessels
Key points stood out:
Small, incremental changes add up to significant impact over time
Transparency on vessel performance builds trust across stakeholders
Managing efficiency at scale after a major fleet merger requires discipline and collaboration
15 Aug 2025
What We Learned From Installing Wind Tech - Before You Do It
In this episode of Seathrough Efficiency, Saurabh breaks down what we learned from installing Wind Assisted Propulsion - not theorising about it.
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.
1 Aug 2025
They set a high bar on sustainability – How Klaveness makes efficiency work in practice
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.
Topics include:
- How to assess and prioritize technologies
- How to handle risks around energy efficiency investments
- Why crew engagement often defines the success of retrofits
It’s a practical look at how Klaveness is aligning daily operations with long-term sustainability strategy.
10 Jul 2025
The one of a kind retrofit that taught us what works, so you don’t have to guess
In this episode we go back to where it all began, the Maersk Ingrid retrofit. We are joined by Steen Sander Jacobsen, Technical Director at Njord, to explore the very first retrofit project and the lessons it taught us about energy efficiency at sea.
From unexpected performance results to breakthrough insights, Steen shares what made Maersk Ingrid a unique candidate, how technologies were tested and measured, and what this case still teaches us today.
Topics covered:
Why Maersk Ingrid was chosen for deep retrofit
Measuring real-world performance across systems
Surprising results from PBCF, Mewis duct, and VFDs
The biggest learning from the project
How this case shaped future retrofit strategies
19 Jun 2025
What your board actually wants to hear
We sat down with Frederik, Managing Director at Njord, to talk about what boards really want to hear when you pitch a retrofit.
In this episode:
Why ROI alone isn't enough
How to handle risk and uncertainty
Getting alignment across technical and commercial teams
What happens after the board says yes
If you're involved in planning, approving, or pitching retrofit projects - this one's for you-
Reach and audience
Public platform figures. Ratings count people who left a rating, not total listeners.
Spotify
4.9 / 5
10 ratings
Contact Seathrough Efficiency
Guest appearances
Books guests
Based on episode analysis; this does not confirm that the show is currently accepting guests.
Host of Seathrough Efficiency?
Claim your podcast to manage its listing and keep your show details accurate.
Pod Engine is an independent podcast discovery and analytics service and is not affiliated with or endorsed by this podcast. Artwork and show content belong to their owners. Full legal notice.
Explore this show Podcast research with Pod Engine
