Does the pilot make any allowance for crosswind? Is there any crab angle applied and if so is it removed prior to touchdown
Most modern angle-deck carriers set a heading so that the true wind direction and speed, coupled with the ships true heading and speed results in a relative wind direction down the line of the flight deck, i.e. ship's heading -15 degrees. This method effectively minimizes the turbulent airflow created by the topside structure on the starboard-side of the carrier.
This results in an approach where just prior to the threshold you make a small correction that results in the wind being "right on the nose" at touchdown. If you don't, it doesn't really matter as the hook has found the arrestor cable and you have stopped! The glide slope 'crab' is slightly right, and unlike a land based crosswind approach, when you take it off there is no x-wind, rather your runway is moving 15 degrees right of heading at the ship's speed through the water.
The whole situation is unfamiliar to non carrier trained pilots, as the wind-speed into which they are landing is comprised of two components made up by the actual wind-speed and the ships speed. So your GS at touchdown will be TAS minus wind-speed, minus relative ship-speed. In this situation the cross-wind factor is maximum on a calm day with the ship steaming, but as the relative angle between the wind direction and the ships heading doesn't exceed 15 degreees, the x-wind factor is negligible.
mm43