Switch the capture system on and off and watch what reaches the community.
Switch the capture system on and off to see what happens to the vessel's exhaust at berth — and to the air drifting toward Ghadfan, Majees, and Falaj Al Qabail.
Illustrative simulation. Capture percentages reflect STAX Engineering's published performance figures — removal of up to 99% of particulate matter and 95% of nitrogen oxides (STAX Engineering, 2025a; The Maritime Executive, 2025). The animation is a schematic, not a physical model of plume dispersion.
Auxiliary engines run the whole time the vessel is alongside. Untreated exhaust leaves the funnel and drifts inland toward Ghadfan, Majees, and Falaj Al Qabail.
The hood clamps over the vessel's stack and routes exhaust to the barge. Only treated air leaves, through the barge's own clean-release stack.
Nothing changes on the vessel itself, which is why the barge can serve ships that cannot use shore power.