Southampton Study: Ship Pollution More Harmful Than Traffic — SkimNews
Get the Energy newsletter
Daily energy & climate — solar, EVs, oil, the policy fights and tech bets shaping the transition. Free.
- University of Southampton researchers (a team of 32) began sampling air pollution at Southampton's docks in 2018, spending over two years on-site with port staff support.
- The study found ship-emitted ultrafine particles containing vanadium, nickel, cobalt, and molybdenum drove lung cells to release more inflammatory signals and reduced their ability to block viral replication compared with road traffic pollution.
- Vanadium concentrations downwind of the cruise terminal correlated directly with the number of cruise ships in port; the metal vaporises during combustion of heavy fuel oil left behind after refining.
- Cruise ships carried significantly more vanadium and nickel in their particulate emissions than container ships, with engines running at berth for heating, hot water, lighting, and cooking — a load cargo ships don't face.
- Associated British Ports said Southampton was the first UK port to introduce large-scale shore power, now used by about 15% of cruise ships, but raised concerns about aspects of the study's methodology.
- Neither ultrafine particles nor vanadium are routinely monitored; a new EU directive requiring ultrafine particle measurements at pollution hotspots such as ports does not apply in the UK.
Why it matters: With 2.5 million cruise passengers through Southampton in 2025 and roughly 85% of cruise ships still burning fuel at berth, the identified risk sits downwind of a city of 260,000 people — yet the specific pollutants implicated are not routinely monitored in the UK, while the EU is moving to mandate exactly those measurements around ports.
Ask SkimNews
