Armadillo-class tanker

300px USS Porcupine, an Armadillo-class tanker
Class overview
Builders:	California Shipbuilding Corporation, Delta Shipbuilding Company
Operators:	United States Navy, Maritime Commission
In service:	18 November 1943 - 12 July 1946
Completed:	18
Active:	0
Lost:	1 USS Porcupine (IX-126)
General characteristics
Type:	Liberty tanker
Displacement:	14,245 tons
Length:	441 ft 6 in (135 m) overall 427 ft (130 m) waterline 417 ft 9 in (127 m) between perpendiculars
Beam:	57 ft (17 m)
Draft:	27 ft 9 in (8 m)
Propulsion:	2,500 hp (1,900 kW)
Speed:	11 kn (20 km/h)
Capacity:	10,674 tonnes dead 7,219 tonnes gross 272,978 ft³ (6,937 m³, 64,826 barrels)
Complement:	81 officers and men
Armament:	Typically 1 × 5-inch 38 caliber dual purpose gun 1 × 3-inch gun 8 × 20 mm cannon

The Armadillo class of tankers were those Type Z-ET1-S-C3 Liberty tankers that were commissioned into the United States Navy. They were given the hull classification symbols of unclassified miscellaneous vessels.

This group of Liberty based tankers all served in the United States Navy during the Second World War. Each ship was commissioned in late 1943, and decommissioned in the summer of 1946. These ships primarily served in the Asian-Pacific theater of the war. They brought aviation gasoline to remote islands in the south Pacific, required for the many reconnaissance missions.