Here are a couple of images from our maintenance supply guy, William "Billy" Weatherford. My post on the ghost bomb hit from 18 March inspired him to forward these images in an email and here are his comments from it... The next two pictures are of our Pavilion area, the Golf Course and Shem Creek in the distance and taken from our mast. Here is a picture that I took looking down from about 30 feet above the 011 deck with my feet on the edge also.

Looking down at the pier from 30 feet above the O-11 level on USS Yorktown (CV-10).

Looking shoreward towards the gift shop, parking lot and towards Shem Creek, Charleston harbor is on the right.
And the ANSWER is 150 to 160 feet...