The maritime industry knows how to operate across borders and oceans. What’s proving harder is navigating the growing expectations around ESG data, sustainability reporting, and accountability.

Shipping now contributes roughly 2.9% of global greenhouse gas emissions, and regulators from the EU and the International Maritime Organisation are tightening requirements for emissions reporting, sustainability disclosures, and operational transparency.

At the same time, investors, cargo owners, and broader stakeholders demand credible, comparable ESG data, putting pressure on maritime organisations to transform fragmented operational information into reliable sustainability reports that withstand scrutiny.

Against this backdrop, understanding the key challenges in maritime ESG and sustainability reporting is essential to building trust, navigating complex regulations, and making informed strategic decisions in a sector under rapid change.

Fragmented Operational Data: A Core Challenge for Maritime ESG Reporting

Reliable maritime ESG reporting starts with good data, but today, that’s easier said than done.

In shipping and port operations, the information needed to measure sustainability often lives in many separate places:

Vessel logs
Fuel systems
Emissions monitoring tools
Safety records
External partners’ systems

This makes it hard to bring all the pieces together into a clear, consistent picture.

According to industry feedback,

Collecting reliable ESG data is still seen as the top reporting challenge for many maritime stakeholders.
Nearly half of professionals at a recent sector workshop said data collection issues were the biggest obstacle to effective ESG reporting.

Beyond sheer availability, the quality and consistency of the data also vary.

Reporting standards for emissions, crew welfare, biodiversity impact, and other key metrics can differ across regions and partners, leading to gaps or mismatches when trying to consolidate information into a single sustainability report.

Even when data exists, differences in how it’s defined or measured can undermine confidence in the final numbers.

For organisations operating across fleets, ports, and subsidiaries, this fragmentation creates a serious hurdle.

Without a structured, connected approach to capturing and aligning data from all parts of the operation, maritime ESG reporting can become slow, error-prone, and hard to trust, exactly the opposite of what regulators, financiers, and stakeholders are now expecting.

Complex and Evolving Regulations Around Maritime ESG Compliance

Alongside data challenges, maritime ESG reporting is further complicated by a rapidly evolving and increasingly complex regulatory landscape.

Shipping companies, ports, and terminals must now respond to overlapping requirements from international bodies, regional authorities, and even individual ports. Each has its own scope, timelines, and expectations.

At the international level, frameworks set by the International Maritime Organisation continue to evolve.
In parallel, regional regulations such as EU climate and sustainability rules introduce additional disclosure and reporting obligations.
Meanwhile, in Europe, the Corporate Sustainability Reporting Directive (CSRD) has expanded ESG reporting obligations for many companies, including those in the maritime sector, which now require structured sustainability disclosures and external assurance of reports.
Port authorities may also apply their own sustainability requirements, adding another layer of complexity for operators working across multiple locations.

Aligning day-to-day operational metrics with these ESG frameworks is not straightforward. Fuel use, emissions intensity, safety performance, and social indicators are often tracked for operational reasons, not with regulatory disclosure in mind.

Translating this operational data into compliant, auditable sustainability reports requires clarity, consistency, and strong governance, all of which are difficult to achieve when requirements keep shifting.

Inconsistent interpretations, missing data, or unclear methodologies can lead to non-compliance, reporting corrections, or audit findings, damaging trust with regulators and stakeholders.

Manual Processes and Audit Readiness Risks in Maritime ESG Reporting

Even when ESG data is available and reporting rules are clear, the way ESG reporting is executed can still create major challenges.

Many maritime organisations continue to rely on spreadsheets, email chains, and manual calculations to prepare sustainability reports.

These manual ways of working make it difficult to track changes and approvals. Numbers are often updated in multiple files, by different people, at different times.

Over time, it becomes hard to explain how a final ESG figure was created, or which version of the data is the correct one.

Audit readiness depends on clearly demonstrating where data comes from, how it was handled, and who approved it. As sustainability reporting moves toward mandatory audits and external assurance, this level of clarity is no longer optional.

When reporting relies on manual steps, teams often spend weeks chasing documents, checking calculations, and recreating work just to respond to audit questions.

This creates real pressure. Audits take longer, risks increase, and confidence in reported results can suffer.

This complexity becomes even more visible in large port ecosystems, where sustainability data spans multiple operational systems.

Turning ESG Reporting into Actionable Insights for Maritime Decision-Making

Most maritime organisations still view sustainability reporting as a back-end task, completed annually, rather than as a source of insights that can inform and improve operations and strategy. But that’s starting to change, and for good reason.

Experts now say that sustainability data is not just for compliance; it can strengthen decision-making across the whole organisation when it’s accurate, timely, and connected to operational context. (Forbes)

Traditionally, ESG data has been collected to satisfy regulators, not to support business actions. This limits its value.

When teams can’t easily compare emissions trends, crew welfare indicators, fuel efficiency metrics, or port performance in a useful format, they miss opportunities to steer performance improvements or cut costs.

Even external surveys show that many companies reporting sustainability metrics struggle to use them for operational advantage because the data isn’t set up for deeper analysis.

In the maritime sector, ESG reporting works differently.

Data that goes beyond reporting requirements can inform decisions such as routing optimisation, fuel sourcing, maintenance planning, and logistics partnerships. All of these directly affect emissions, costs, and stakeholder confidence.

Taking a data-driven approach also supports better alignment with investor expectations and customer demands for transparency.

To get there, maritime organisations need systems that turn raw ESG data into insights in everyday operations, not just at year-end.

Building a Digital ESG Reporting Foundation for Maritime Organisations Can Eliminate Common Challenges

As ESG reporting becomes a long-term requirement rather than a one-off exercise, many maritime organisations are facing a deeper question: who owns ESG data, and how is it managed over time?

Without a clear foundation, ESG reporting often depends on individual teams, temporary processes, or short-term fixes that break when people, systems, or requirements change.

A strong ESG reporting foundation creates continuity.

It defines clear roles, shared rules, and common structures for how sustainability data is collected, reviewed, and approved.

This matters in the maritime sector, where operations are spread across fleets, ports, terminals, and regions, and where reporting responsibilities often sit across multiple departments.

Rather than treating ESG as a separate reporting task, a digital foundation embeds sustainability data into everyday operations.

It allows teams to work from shared definitions, follow consistent workflows, and rely on the same logic year after year. This reduces dependency on manual coordination and helps organisations maintain stability even as regulations, teams, and business priorities evolve.

Just as importantly, a shared ESG reporting foundation supports growth. As maritime organisations expand their fleets, add new ports, or operate in new regions, ESG reporting should scale with them, without increasing complexity or risk.

A well-designed foundation makes it possible to extend reporting across the organisation while keeping control, clarity, and confidence intact.

For the maritime industry, building this kind of ESG reporting foundation opens the doors for creating a stable, long-term structure that supports trust, accountability, and sustainable decision-making over time.

Maritime ESG Challenges Can Be Overcome

Maritime ESG reporting is often discussed as a reporting problem, but what it really exposes is how organisations manage complexity. Fleets move, regulations change, data flows across borders, and responsibilities shift between teams. ESG simply brings all of that into focus.

The organisations that struggle most are not the ones lacking intent, but the ones relying on systems and processes that were never designed for this level of scrutiny or continuity.

When sustainability data is treated as something assembled at the end of the year, weaknesses in structure, ownership, and decision-making quickly surface.

What’s emerging instead is a more mature view of ESG reporting. One that sees it as part of how maritime organisations operate, govern, and plan for the future. When sustainability information is consistent, connected, and trusted, it stops being a burden and starts becoming part of how the business understands itself.

This is where the Terra ESG Platform plays a role. By providing a structured, digital foundation for maritime ESG data, Terra helps organisations move away from fragmented reporting and manual coordination toward reporting that is clear, auditable, and built to scale.

Learn how Terra ESG Platform helped PoAB overcome the ESG challenges maritime organisations keep facing: [PoAB Case Study Link].

Or schedule a live demo to explore more! Get a Demo — Terra Reporting

Key ESG and Sustainability Reporting Challenges in the Maritime Industry