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GSEnergy Efficiency - Transport SectorInternationalGeneral Methodologyv2.1

TMS Tankers Ltd. Shipping Retrofit Project 1

GS-3899 ↗ · current registry ID: GS11933

#566of 1329 in Industrial#884of 1801 in Gold Standard (GS)

5.0/ 10
Integrity
4.5
Transparency
5.5
Claim Safety
4.5
Documentation
6.0

Audit Analysis

A shipping retrofit project with VVB-confirmed additionality and conservative under-delivery relative to ex-ante estimates, but undermined by a project-specific baseline, a 0% leakage deduction with contradictory justification, six ships removed during monitoring, an approved methodological deviation, and seven outstanding corrective actions. The data quality issues and unresolved measurement uncertainties materially weaken confidence in the verified emission reductions.

Red Flags

  • Six of 46 ships removed from the project during monitoring due to insufficient baseline data, ineligible retrofit dates, or compromised operational performance (verification report, 2025-07-17)
  • Approved deviation (DEV_490) to substitute the GNM model for the Basic model after regression analysis failures, introducing methodological uncertainty (verification report)
  • Leakage deduction of 0% with justification described as 'not addressed' in the verification report, contradicting the monitoring report's 'deemed negligible' claim
  • Seven corrective actions remain open, including inconsistencies in ER calculation spreadsheets, missing ship data, and unclarified fuel flow meter calibration methods
  • Fuel flow meter calibration corrections applied for some ships, indicating measurement uncertainty in the underlying data (verification report)

Credit Vintages

IssuedRetiredAvailable
2021
2,86202,862
2022
24,005024,005
2023
37,360037,360
Total64,227064,227

Risk Indicators

Additionality

VVB-confirmed barrier test

Permanence

avoidance project but no explicit permanence safeguards

Leakage

0% deduction with contradictory/missing justification

Baseline

Project-specific baseline; no reassessment date stated

Safeguards

Grievance mechanism and benefit sharing present; FPIC not conducted

Double-claim

CORSIA and CCP status not stated in available documents

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Analysis ProvenanceScored2026-09-06General Methodology v2.1

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