Boskalis

Boskalis has a clear operational climate ambition. It aims for net-zero emissions across its own operations, Scope 1 and 2, by 2050, aligned with the IMO net-zero transition pathway for international shipping. It also has a separate ambition for onshore Boskalis projects in the Netherlands to become climate neutral by 2030.

Net-zero Scope 1+2 by 2050; aligned with IMO; not full-Scope SBTi.

Boskalis targets a 10% reduction in fleet carbon intensity by 2030, compared with a 2023 baseline. This target is aligned with the IMO pathway and is expected to be achieved through energy-efficiency measures, voyage optimisation, emissions dashboards, hull / propeller efficiency, battery packs and greater use of renewable fuels.

10% fleet carbon intensity by 2030 vs 2023; sector-relevant target.

Boskalis reports Scope 1 and Scope 2 emissions for its own operations. In 2025, total Scope 1+2 emissions were 1.502 million metric tonnes CO₂e, compared with 1.403 million metric tonnes CO₂e in 2024. Its vessels accounted for around 99% of Scope 1+2 emissions. A full Scope 3 inventory is not clearly disclosed in the same way as larger listed corporates.

Scope 1+2 reported; vessels 99%; full Scope 3 inventory not clearly disclosed.

Boskalis’ responsible marine / extractive evidence is strongest through its Good Stewardship strategy, responsible sand extraction, biodiversity framework, environmental monitoring and nature-based solutions. The company explicitly identifies responsible sand extraction, biodiversity and ecosystems, turbidity, pollution, invasive species and underwater noise as material sustainability topics for its dredging and marine contracting activities.

Good Stewardship; responsible sand extraction; explicit marine materiality.

Boskalis does not disclose a simple production-style intensity such as kgCO₂e per tonne dredged material. Instead, it uses an internally developed fleet carbon intensity ratio, aligned with the IMO intensity approach, to express emissions relative to the utilised installed power of vessels. The key benchmark metric is therefore fleet carbon intensity, with a 10% reduction target by 2030 versus 2023.

Fleet carbon intensity ratio aligned with IMO; sector-appropriate.

Absolute Scope 1+2 emissions increased from 1.403 million tCO₂e in 2024 to 1.502 million tCO₂e in 2025. This means the absolute emissions trend worsened year-on-year, mainly because Boskalis is a vessel-heavy marine contractor and activity levels / project mix influence fuel consumption. The stronger decarbonisation evidence is therefore intensity-based rather than absolute-emissions reduction.

Absolute Scope 1+2 increased 1.403→1.502 Mt due to project mix.

Boskalis does not disclose a conventional water withdrawal / consumption / discharge table. For this benchmark, water should be interpreted through marine water-quality management, dredging impacts, turbidity control, coastal protection and marine ecosystem protection rather than corporate water-use volumes. This is a disclosure gap compared with companies reporting detailed water withdrawal and discharge data.

Conventional withdrawal not material; substituted via marine water quality.

Boskalis provides strong project-level water-quality evidence through turbidity management. In Sohar, Oman, Boskalis used an advanced computer model to forecast dredging-induced turbidity near a sensitive seawater intake, supported by sensors, buoys, satellite imagery and live turbidity measurements. In 2025, Boskalis reported one turbidity exceedance on projects with a turbidity scope.

Sohar turbidity model; 1 turbidity exceedance in 2025; live monitoring.

Boskalis has a dedicated Biodiversity Framework covering nature-based solutions, priority habitats and species, pollution, invasive species, turbidity and underwater noise. The framework includes commitments to consider precautionary mitigation near priority biodiversity, sensitive breeding / migration patterns, and efforts to minimise strikes of marine mammals, marine turtles and coral.

Dedicated Biodiversity Framework; turbidity, noise, invasive species addressed.

Boskalis’ key impact is marine and coastal habitat disturbance from dredging, seabed preparation, land reclamation, subsea rock installation, cable installation and coastal protection. The report does not disclose a single total seabed area disturbed or dredged-area KPI. However, project examples show material marine activity, including the Sohar dredging project, Walvis Bay channel deepening, offshore wind foundation / cable works, scour protection and land reclamation in the Maldives.

Marine project examples disclosed; consolidated seabed-area KPI not given.

Boskalis’ strongest restoration evidence is not mine closure, but nature-based coastal protection and habitat restoration. In 2025, it worked on Dutch projects improving local biodiversity and water quality by restoring or expanding habitats for fish, macrofauna and aquatic plants. It also continued monitoring artificial reefs and nature enhancements at Hengistbury Head, where early results showed diverse marine life including mussels, crabs and shellfish.

Nature-based coastal protection; artificial reef monitoring at Hengistbury.

Formal mining-style tailings / TSF / GISTM evidence is not applicable to Boskalis. The closest equivalent is dredged sediment, seabed material handling, subsea rock installation, dredging overflow / turbidity control and responsible sand extraction. Benchmark wording should be: tailings not applicable; marine sediment and dredging-impact management evidence present.

Tailings not applicable; sediment & dredging-overflow management substitutes.

Boskalis provides circularity evidence mainly through sustainable ship recycling and vessel dismantling. It follows the Hong Kong Convention, EU Ship Recycling Regulation and its own standards. For vessels above 500 GT that are dismantled or sold, Boskalis prepares an Inventory of Hazardous Materials. In 2025, the dismantling of a 500 GT+ pontoon was completed in the Netherlands in compliance with the EU Ship Recycling Regulation.

Sustainable ship recycling; Hong Kong Convention; group waste KPI absent.

Boskalis reports clear marine incident indicators. In 2025, it recorded one turbidity exceedance on projects with a turbidity scope and one spill into water. The spill occurred when a hydraulic hose burst during dredging operations and involved biodegradable oil, with limited impact on the marine environment. Boskalis also uses Environmental Monitoring and Management Plans and adaptive management to meet project-specific environmental requirements.

1 turbidity exceedance, 1 biodegradable spill; EMP/adaptive management used.

Boskalis has strong supplier governance evidence. Strategic suppliers account for at least 75% of annual spend. In 2025, 87% of strategic suppliers by spend signed or endorsed the Supplier Code of Conduct. Suppliers complete a pre-qualification process and may be assessed on health and safety, quality, environmental, CSR, financial / insurance or supply-chain management criteria. Since 2012, Boskalis has conducted Implementation Scans at 206 suppliers, including 71 visits to foreign suppliers in 25 countries.

87% strategic suppliers signed Code; 206 Implementation Scans since 2012.