Harold Hitz Burton,
Avondale Marine Ways v. Henderson…
“ A floating dry dock, as its name makes clear, floats on the water, the vessel resting on the bottom of the dry dock after the water has been removed. (2) A graven dry dock is dug into the land. The vessel floats in but rests on land once the water has been pumped out. (3) Finally there is the marine railway, on which the vessel is drawn out of the water, instead of the water being drawn away from the vessel. A ship is no more and no less on land when it rests in a graven dry dock than when it rests on a marine railway. ”
