In 1916, design work was completed on the next class of battleships to be built for the United States Navy beginning in 1917.
These ships were nearly direct copies of the preceding Tennessee class, with the exception of the main battery, which increased from twelve 14-inch (356 mm) guns to eight 16 in (406 mm) guns.
The Colorado class proved to be the last class of battleships completed of the standard type.

Washington was 624 ft (190 m) long overall and she had a beam of 97 ft 6 in (29.72 m) and a draft of 30 ft 6 in (9.30 m).
She displaced 32,693 long tons (33,218 t) as designed and up to 33,590 long tons (34,130 t) at full load.
The ship was powered by four General Electric turbo-electric drives with steam provided by eight oil-fired Babcock & Wilcox boilers.
The ship's propulsion system was rated at 28,900 shaft horsepower (21,600 kW) for a top speed of 21 knots (39 km/h; 24 mph), though on speed trials she reached 31,268 shp (23,317 kW) and a speed of 21.09 kn (39.06 km/h; 24.27 mph).
She had a normal cruising range of 8,000 nmi (15,000 km; 9,200 mi) at 10 kn (19 km/h; 12 mph), but additional fuel space could be used in wartime to increase her range to 21,100 nmi (39,100 km; 24,300 mi) at that speed.
Her crew numbered 64 officers and 1,241 enlisted men.

She was armed with a main battery of eight 16 in /45 caliber Mark 1 guns in four twin-gun turrets on the centerline, two forward and two aft in superfiring pairs.
The secondary battery consisted of sixteen 5-inch (127 mm)/51 caliber guns, mounted individually in casemates clustered in the superstructure amidships.
She carried an anti-aircraft battery of eight 3-inch (76 mm)/50 caliber guns in individual high-angle mounts.
As was customary for capital ships of the period, she had a 21 in (533 mm) torpedo tube mounted in her hull below the waterline on each broadside.
Washington's main armored belt was 8–13.5 in (203–343 mm) thick, while the main armored deck was up to 3.5 in (89 mm) thick.
The main battery gun turrets had 18 in (457 mm) thick faces on 13 in (330 mm) barbettes.
Her conning tower had 16 in (406 mm) thick sides.
In 1916, design work was completed on the next class of battleships to be built for the United States Navy beginning in 1917. These ships were nearly direct copies of the preceding Tennessee class, with the exception of the main battery, which increased from twelve 14-inch (356 mm) guns to eight 16 in (406 mm) guns. The Colorado class proved to be the last class of battleships completed of the standard type.
Washington was 624 ft (190 m) long overall and she had a beam of 97 ft 6 in (29.72 m) and a draft of 30 ft 6 in (9.30 m). She displaced 32,693 long tons (33,218 t) as designed and up to 33,590 long tons (34,130 t) at full load. The ship was powered by four General Electric turbo-electric drives with steam provided by eight oil-fired Babcock & Wilcox boilers. The ship's propulsion system was rated at 28,900 shaft horsepower (21,600 kW) for a top speed of 21 knots (39 km/h; 24 mph), though on speed trials she reached 31,268 shp (23,317 kW) and a speed of 21.09 kn (39.06 km/h; 24.27 mph). She had a normal cruising range of 8,000 nmi (15,000 km; 9,200 mi) at 10 kn (19 km/h; 12 mph), but additional fuel space could be used in wartime to increase her range to 21,100 nmi (39,100 km; 24,300 mi) at that speed. Her crew numbered 64 officers and 1,241 enlisted men.
She was armed with a main battery of eight 16 in /45 caliber Mark 1 guns in four twin-gun turrets on the centerline, two forward and two aft in superfiring pairs. The secondary battery consisted of sixteen 5-inch (127 mm)/51 caliber guns, mounted individually in casemates clustered in the superstructure amidships. She carried an anti-aircraft battery of eight 3-inch (76 mm)/50 caliber guns in individual high-angle mounts. As was customary for capital ships of the period, she had a 21 in (533 mm) torpedo tube mounted in her hull below the waterline on each broadside. Washington's main armored belt was 8–13.5 in (203–343 mm) thick, while the main armored deck was up to 3.5 in (89 mm) thick. The main battery gun turrets had 18 in (457 mm) thick faces on 13 in (330 mm) barbettes. Her conning tower had 16 in (406 mm) thick sides.
USS Washington (BB-47)