Yes, NAVIGATED is a Scrabble word!

Letter values in Scrabble US: N 1, A 1, V 4, I 1, G 2, A 1, T 1, E 1, D 2.

Is it a valid word?

NAVIGATED is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

travel on water propelled by wind or by other means
act as the navigator in a car, plane, or vessel and plan, direct, plot the path and position of the conveyance
direct carefully and safely