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jmalicki | on: France's aircraft carrier located in real time by Le Monde through fitness app
Commercial airliners are sub mach1. The Charles de Gaulle is reported to go at least 27 knots at top speed.

27*16=432, a 777 goes 510-520 knots.

So maybe more like 18-19x.

For the carriers it is at least as the true top speed is classified.

loeg | parent
16x, 20x -- it's about the right order of magnitude.