Hydraulics and Fluid Mechanics in ME
Stanton diagram is a

log-log plot of friction factor against Reynolds number
log-log plot of relative roughness against Reynolds number
semi-log plot of friction factor against Reynolds number
semi-log plot of friction factor against relative roughness

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Hydraulics and Fluid Mechanics in ME
Froude number is significant in

Supersonics, as with projectile and jet propulsion
Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls
All of the listed here
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

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