Drydock Number One, Norfolk Naval Shipyard
Drydock Number One, Norfolk Naval Shipyard | |
| Location | Norfolk Naval Shipyard, Portsmouth, Virginia |
|---|---|
| Coordinates | 36°49′14″N 76°17′35″W / 36.82056°N 76.29306°W |
| Area | 2 acres (0.81 ha) |
| Built | 1827 |
| NRHP reference No. | 70000862 |
| VLR No. | 124-0029 |
| Significant dates | |
| Added to NRHP | February 26, 1970 |
| Designated NHL | November 11, 1971 |
| Designated VLR | December 2, 1969 |
Drydock Number One is the oldest operational drydock facility in the United States. Located in Norfolk Naval Shipyard in Portsmouth, Virginia, it was put into service in 1834, and has been in service since then. Its history includes the refitting of USS Merrimack, which was modified to be the Confederate Navy ironclad CSS Virginia. It was declared a National Historic Landmark in 1971.