METHODOLOGY How We Measure Our Carbon Footprint We measure greenhouse gas emissions using a framework based on the Greenhouse Gas Protocol, the leading international standard for corporate emissions accounting. We report both total emissions and intensity metrics, such as emissions per guest, to track performance over time. What’s Included Our reporting boundary covers: • Quark Expeditions-owned vessels • Chartered ships under our operational management • Direct shore-side operations • Guest charter flights and accommodations arranged by Quark Expeditions Guest travel to expedition departure points is excluded, as it varies widely and is outside our control. How We Calculate Emissions We use direct measurements, estimates, and recognized emissions factors from the UK Department for Energy Security and Net Zero, the EPA, the IEA, and other established sources. Data sources include: • Onboard fuel monitoring systems and fuel receipts • Office electricity utility records • Business travel booking and expense data • Spend-based estimates for major supply-chain categories Where direct data isn’t available, we apply structured assumptions. Each year, we work to improve data quality and reduce these assumptions. Oversight and Improvement All calculations and methods are reviewed annually by independent carbon specialists. We maintain detailed documentation for key data sources to continually refine and improve accuracy.
WHAT IS MATERIALITY? Some emission sources have far more influence on our footprint than others. Materiality means focusing on the sources that make up the largest share of our emissions and where change will have the greatest impact. For us, marine fuel is the most material source. By concentrating on fuel-related emissions, we can prioritize actions that deliver the most meaningful reductions over time.
Photo: Michelle Sole
NAVIGATING THE PATH TO NET ZERO Reaching net zero requires a plan grounded in the realities of operating in the Polar Regions. We continue refining our climate-aligned decarbonization strategy, focused on vessel efficiency, operational improvements, and emerging low-carbon technologies, while remaining nimble as new solutions become available. This transition will take time, and we are committed to steady, evidence-based progress shaped by what we learn each season.
Sustainability Report 2025: Our Commitment to Conservation & Community | 27
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