You are all assuming the boat pictured in the above posts is the subject of the piece . Bravo Lima appears to be about 9m in length.
https://www.livetts.co.uk/fleet/bravo-lima-gb/
I agree boats of all sorts are referred to in feet , even some of those made in Germany for example. Distances at sea in Nm speed of boats in knots , depths on sea charts in metres, UK inland waterways signs in mph and some in km/h . What a mix up !
Now French - that's undeniably a foreign language, unless you happen to be French or from some other nation where French is spoken.
Metres on the other hand are certainly are not foreign having been in common use the last 50 years in the UK.