From Mr Boeings B777 Flight Crew Training Manual
Landing Crosswind guidance
Dry 45 knots, Wet 40 Knots
Ref Page 6.37
T/O Cross wind guidance
Dry/Wet 40 Knots (gets a bit complex at varying weights and MACs)
Ref page 3.12
It also states that these figures are provided for individual airlines to establish
THEIR OWN CROSSWIND LIMITS