Earlier quoted context omitted.
I'm not sure what the situation is in other European countries, but in the UK we use different units depending on the use so most people are use to working with both imperial and metric. Perhaps with the exception of fahrenheit most people here will know what you mean if you use units like feet and will often even prefer thinking in feet over metres for certain things. Personally I default to feet for something like…
No, not many people in continental Europe are comfortable with miles, feet and inches. But sailboat length is traditionally measured in feet. Same for aircraft altitude. So sailors and aviators are more likely to use feet (and nautical miles) as measurement.
And knots. Speed limits at sea in Norway (in harbours and other places with much traffic and little room for maneuvering) are always in knots. But we measure water depth in meters, not fathoms.