Independent Maritime ESG Rating Provider

VS Maritime ESG Corporate Rating — Methodology

Independent Maritime ESG Ratings — Built on Transparency, Regulation and Industry Expertise. The VS Maritime ESG Corporate Rating is an independent ESG rating designed specifically for the maritime industry, providing a transparent, evidence-based assessment of environmental, social and governance performance — evaluating both sustainability impacts and ESG-related financial and operational risks.

Varuna Sentinels B.V. — Independent Maritime ESG Rating Provider
Methodology published: July 17, 2026

ESG Ratings — Overview

The VS Maritime ESG Corporate Rating is an independent ESG rating designed specifically for the maritime industry, providing a transparent, evidence-based assessment of environmental, social and governance performance — evaluating both sustainability impacts and ESG-related financial and operational risks.

Our evidence-based rating assesses how effectively maritime entities navigate environmental, social, and governance challenges through operational performance, regulatory compliance, and sustainability maturity.

Maritime-Specific

Maritime-Specific ESG Rating Framework.

Double Materiality

Double materiality approach.

Evidence-Based

Evidence-based scoring framework.

Regulatory Evidence

Regulatory evidence integrated.

Transparent

Transparent methodology.

ESG Risk and Operational Performance Based Methodology.

About Our ESG Ratings — Purpose of the Rating

Provides a structured, transparent and consistent assessment of ESG performance for organisations operating within the maritime sector — supporting informed decision-making on sustainability performance, regulatory preparedness and ESG-related operational and financial risks. The rating complements statutory certifications, technical inspections and financial analysis, but does not replace them.

What Our Rating Measures

Our methodology evaluates three core sustainability pillars.

Environmental
  • GHG emissions, carbon intensity and climate transition
  • Energy efficiency and alternative fuel readiness
  • Air pollution control
  • Marine pollution prevention
  • Ballast water and biodiversity protection
  • Waste management and port reception compliance
Social
  • Seafarer labour rights and working conditions
  • Occupational health and safety onboard
  • Crew competence, training and certification
  • Human rights and crew welfare
  • Diversity, inclusion & workforce development
Governance
  • Safety management and regulatory compliance
  • Product/equipment safety and quality
  • Maritime security
  • Cybersecurity and digital resilience
  • Business ethics, anti-bribery and sanctions compliance
  • Data protection and privacy
  • Supply chain and human rights due diligence
  • ESG disclosure and governance

Methodology — Rating Approach

The VS Maritime ESG Rating Methodology applies a structured, evidence-based assessment process that evaluates how effectively maritime organisations and assets identify, manage, and perform against their most material Environmental, Social, and Governance (ESG) topics.

Regulatory Compliance

Material ESG topics identified from mandatory international and European maritime regulations.

Double Materiality

Evaluates impact on people/environment and financial & operational ESG risk.

Evidence-Based

Supported by disclosures, regulatory filings, documentation and independent verification.

ESG Risk and Operational Performance Based

The rating does not create company-specific risk opinions; it evaluates performance against a defined maritime ESG risk universe.

Transparency

Methodology, governance and rating approach published on this website.

Rating Scope & Materiality Approach

The Varuna Sentinels Rating Scope covers maritime organisations and operational assets across the global maritime value chain. The methodology assesses entities based on their material Environmental, Social, and Governance topics, considering their operational profile, ESG risks, impacts, opportunities, regulatory obligations, and sustainability performance.

Currently Covered

Entity TypeStatus
Shipowners In Scope
Ship Managers In Scope
DOC Holders In Scope
Vessel Operators In Scope
Charterers In Scope (data-dependent)
Individual Vessel In Scope

Future rating products may include Marine Suppliers & Service Providers, Ports & Terminals, Shipyards and Recycling Facilities.

Double Materiality

Impact Materiality

How maritime operations affect climate, marine environment, biodiversity, employees, seafarers, communities and society.

Financial & Operational Materiality

How ESG factors influence regulatory compliance, carbon costs, operational continuity, insurance exposure, charterability, reputation and enterprise value.

Regulatory Foundation

Our methodology incorporates internationally recognised maritime regulations.

Environmental
  • European Union Monitoring, Reporting and Verification (EU MRV) Regulation
  • European Union Emissions Trading System (EU ETS) for Maritime Transport
  • FuelEU Maritime Regulation
  • International Convention for the Prevention of Pollution from Ships (MARPOL)
  • International Maritime Organization Data Collection System (IMO DCS)
  • Energy Efficiency Existing Ship Index (EEXI) / Carbon Intensity Indicator (CII)
  • Ballast Water Mgmt. Convention
  • European Union Ship Recycling Regulation (EU SRR)
  • Hong Kong Convention
Social
  • Maritime Labour Convention, 2006 (MLC, 2006)
  • International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW Convention)
  • International Convention for the Safety of Life at Sea (SOLAS)
Governance
  • International Safety Management (ISM) Code
  • International Ship and Port Facility Security (ISPS) Code
  • General Data Protection Regulation (GDPR)
  • Network and Information Security Directive (NIS2)
  • Corporate Sustainability Reporting Directive (CSRD)
  • European Sustainability Reporting Standards (ESRS)
  • Corporate Sustainability Due Diligence Directive (CSDDD) (where applicable)

Rating Process

1
Data Collection
2
Data Validation
3
Evidence Review
4
ESG Rating Assessment
5
Controversy Adjustment
6
Committee Review
7
Varuna Sentinels ESG Rating Issuance

Annual Surveillance

Ratings are generally reviewed annually, with a structured surveillance cycle following issuance.

Event-driven Review

Interim reviews may follow regulatory enforcement actions, major environmental incidents, safety events, governance failures or material ESG controversies.

Blue Score™ Rating Scale

Blue Score™ Rating Scale

A maritime ESG risk & performance rating that reflects how well entities navigate their sustainability journey in today’s evolving seas.

Blue Score RatingScore RangePerformance LevelWhat It Means
OCEAN LEADER 90 – 100 Exceptional Leadership
Sets industry benchmarks and drives sustainability forward.
Demonstrates outstanding ESG leadership, strong risk management and superior performance across all material topics.
HIGH TIDE PERFORMER 80 – 89 Advanced Performance
Well-managed ESG practices with minor areas for improvement.
Strong governance, proactive risk management and consistent performance with limited ESG exposure.
STEADY VOYAGE 70 – 79 Solid Performance
Good ESG management and operational performance.
Adequate systems and controls in place with manageable ESG risks and opportunities.
MODERATE SEAS 60 – 69 Developing Performance
Building capabilities; several areas need strengthening.
Emerging ESG management practices with moderate risks and inconsistent performance.
CHALLENGING WATERS 50 – 59 Below Expectations
Significant gaps in management and performance.
High ESG risks, weak controls and performance falling short of industry expectations.
STORM WARNING 30 – 49 High Risk
Substantial ESG weaknesses and high exposure.
Very high ESG risks with poor management, limited transparency and adverse performance.
DISTRESS CONDITIONS 0 – 29 Critical Risk
Severe ESG failings and unacceptable performance.
Critical ESG failures, severe controversies and material breach of key requirements.

Data Sources & Governance

Varuna Sentinels B.V. maintains documented governance arrangements to support the independence, quality and integrity of the ESG rating process.

Data Sources
  • Sustainability & Annual Reports
  • Company Policies & Public Disclosures
  • Regulatory Filings
  • Verified Emissions Reports
  • Maritime Databases
  • Classification Society Records
  • Information provided by the rated entity
Governance Arrangements
  • Rating Committee oversight
  • Methodology governance
  • Conflict of Interest management
  • Quality assurance procedures
  • Methodology review process
  • Internal controls

Disclaimers

The VS Maritime ESG Rating:

  • Is not a credit rating
  • Does not constitute investment advice
  • Should not be interpreted as a recommendation to buy, sell or hold financial instruments
  • Complements but does not replace statutory certifications, legal due diligence or technical vessel assessments

Transparency & methodology publication

This structure aligns with ESMA ESG Ratings Regulation transparency expectations while preserving Varuna Sentinels’ intellectual property. Our methodology, governance and rating approach are published on this website under Regulation (EU) 2024/3005 on the transparency and integrity of ESG rating activities.

Enquire About an ESG Rating

Frequently Asked Questions

Is the VS Maritime ESG Rating a credit rating?
No. The VS Maritime ESG Rating is not a credit rating, does not constitute investment advice, and should not be interpreted as a recommendation to buy, sell or hold financial instruments.
Does the rating replace certifications, inspections or legal due diligence?
No. The rating complements statutory certifications, technical inspections and financial analysis, but does not replace them. It also complements but does not replace legal due diligence or technical vessel assessments.
Which entities can be rated?
The rating scope currently covers shipowners, ship managers, DOC holders, vessel operators, charterers (in scope, data-dependent) and individual vessels. Future rating products may include marine suppliers & service providers, ports & terminals, shipyards and recycling facilities.
What is the double materiality approach?
Double materiality evaluates impact materiality — how maritime operations affect climate, marine environment, biodiversity, employees, seafarers, communities and society — and financial & operational materiality — how ESG factors influence regulatory compliance, carbon costs, operational continuity, insurance exposure, charterability, reputation and enterprise value.
How often is a rating reviewed?
Ratings are generally reviewed annually, with a structured surveillance cycle following issuance. Interim event-driven reviews may follow regulatory enforcement actions, major environmental incidents, safety events, governance failures or material ESG controversies.
What is the Blue Score™ rating scale?
Blue Score™ is a maritime ESG risk & performance rating that reflects how well entities navigate their sustainability journey in today’s evolving seas. It runs across seven levels: Ocean Leader (90–100), High Tide Performer (80–89), Steady Voyage (70–79), Moderate Seas (60–69), Challenging Waters (50–59), Storm Warning (30–49) and Distress Conditions (0–29).
Does Varuna Sentinels create company-specific risk opinions?
No. The rating does not create company-specific risk opinions; it evaluates performance against a defined maritime ESG risk universe.

Interested in a VS Maritime ESG Corporate Rating?

Talk to the Varuna Sentinels ESG Ratings team about rating scope, the evidence required and the surveillance cycle for your organisation or vessel.

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