Hydrogen sulfide in explosive concentrations has been detected on the drill floor and the abandon rig signal has been sounded. Which of the following would be the safest way to evacuate?

Correct Answer: Option D — launch only the windward survival capsules

Hydrogen sulfide is heavier than air and highly toxic. Launching from the windward side ensures that the survival craft moves away from the gas source, preventing the craft from passing through the toxic plume. This tactical decision protects personnel from exposure during the critical initial phase of evacuation.