YFD-2

YFD-2 was an auxiliary floating drydock built for the United States Navy in 1901. The first parts were laid down in early 1901 at Maryland Steel Co. of Sparrows Point, Maryland. YFD-2 was the first of its kind, steel movable auxiliary floating drydock, used to raise large ships out the water for repair below the ship's waterline. YFD-2 had a 18,000 tons lifting capacity.


YFD-2 was an auxiliary floating drydock built for the United States Navy in 1901. The first parts were laid down in early 1901 at Maryland Steel Co. of Sparrows Point, Maryland. YFD-2 was the first of its kind, steel movable auxiliary floating drydock, used to raise large ships out the water for repair below the ship's waterline. YFD-2 had a 18,000 tons lifting capacity.
Read article on Wikipedia