One out of 16 infected on a British aircraft carrier.
Around 94% protection - excellent! Especially against Delta, and especially aboard a ship - perhaps the most transmissive common environment.
Those that do test positive will likely show correspondingly high levels of protection against serious disease and death. Highly unlikely that any will die from COVID.
So unlike when our (US) aircraft carrier had to be removed from duty due to COVID, this vaccine protected British carrier can operate through COVID, and continue their mission.