Kim Kardashian West Takes the Kids On a Yacht in Miami

Kim Kardashian West is teaching her kids how to live it up in Miami ... which should always include some time spent on a luxury sea vessel.

KKW brought her oldest children -- North and Saint -- onboard Miami mogul David Grutman's yacht Thursday ... and had her finest hot pink, skin-tight Chanel catsuit on to chase 'em around.

North matched her mom with some pink shorts, and Saint looked absolutely adorable rocking a captain's hat.

Also on the yacht were family friends Jonathan Cheban, Larsa Pippen and her daughter Sophia.