General characteristics (As Built)
Class and type: Yorktown-class aircraft carrier
Displacement: 20,000 long tons (20,000 t) (standard)
25,500 long tons (25,900 t) (full load)
29,114 long tons (29,581 t) (maximum)
Length: 770 ft (230 m) (waterline at design draft) 824 ft 9 in
(251.38 m) (overall)
Beam: 83 ft 3 in (25.37 m) (waterline) 114 ft (35 m) (overall)
Draft: 24 ft 4 in (7.42 m) design 28 ft (8.5 m) full load
Installed power: 120,000 shp (89,000 kW)
Propulsion: 4 × Parsons geared steam turbines 9 × Babcock & Wilcox boilers
Speed: 32.5 kn (37.4 mph; 60.2 km/h) (design)
33.84 kn (38.94 mph; 62.67 km/h) (builder's trials)
Range: 12,500 nmi (14,400 mi; 23,200 km) at 15 kn (17 mph; 28 km/h)
Complement: 2,919 officers and enlisted (wartime)
Armament: • 8 × 5-inch (127 mm)/38 caliber dual purpose guns
16(4x4) × 1.1-inch (28 mm)/75 caliber anti-aircraft guns
24 × M2 Browning M2 Browning .50-inch (12.7 mm) machine guns
Armor: Belt: 2.5-4 in (63.5-102 mm)
Deck: 4 in (102 mm) 60 lb STS steel
Bulkheads: 4 in (102 mm)
Conning Tower: 4 in (100 mm) sides, 2 in (51 mm) top
Steering Gear: 4 in (102 mm)
Aircraft carried: 72 × aircraft
Aviation facilities: 3 × elevators
3 × hydraulic catapults (2 flight deck, 1 hangar deck)
General characteristics (February 1942)
Class and type: none
Length: 827 ft 5 in (252.20 m) overall
Armament: 8 × 5 in (127 mm)/38 cal dual purpose guns
16 (4x4) × 1.1 in (28 mm)/75 cal anti-aircraft guns
30 × 20-mm Oerlikon anti-aircraft cannons
General characteristics (July 1942)
Class and type: none
Armament: 4 additional 1.1 in (28 mm)/75 cal
2 additional 20 mm Oerlikon
She was powered by nine Babcock & Wilcox boilers providing
steam at 400 psi (2,800 kPa) and 648 °F (342 °C) to four
Parsons Marinegeared steam turbines each driving its own
propeller. The turbines were designed to produce a total of
120,000 shaft horsepower [shp] (89,000 kW) giving her a range
of 12,000 nautical miles (14,000 mi; 22,000 km) at a speed of 15
knots (17 mph; 28 km/h). She was designed to carry 4,280
long tons (4,350 t) of fuel oil and 178,000 US gallons (670,000)
of Avgas. Her designed speed was 32.5 knots (60.2 km/h; 37.4 mph).
During sea trials, she produced 120,500 shp (89,900 kW) and
reached 33.85 knots (62.69 km/h; 38.95 mph).
Hornet was equipped with eight 5-inch (127 mm)/38 caliber
dual purpose guns and 16 1.1-inch (28 mm)/75 caliber anti-aircraft
guns in quad mounts (four guns operating together). Originally, she
had 24 M2 Browning .50-inch (12.7 mm) machine guns but these
were replaced in January 1942 with 30 20-mm Oerlikon anti-aircraft
cannon. An additional 1.1-inch (28 mm) quad mount was later
added at her bow and two more 20 mm anti-aircraft guns were
added for a total of 32 mounts. In addition, her athwartships hangar-
deck aircraft catapult was removed. In June 1942, following the
battle of Midway, Hornet had a new CXAM radar installed atop
her tripod mast, and her SC radar was relocated to her mainmast.
Unlike her sisters, Hornet's tripod mast and its signal bridge were
not enclosed when the CXAM was installed, making her unique
among the three ships.
For armor, she had an armor belt of 30-pound (14 kg) special
treatment steel (STS) that was 2.5 to 4 inches (64-102 mm) thick.
The flight and hangar decks had no armor but the protective deck
had 4 inches (100 mm) of 60-pound (27 kg) STS. Bulkheads had
4-inch (100 mm) armor while the conning tower had 30-16 mm
splinter pro armor 4 inches (100 mm) on the sides with 2 inches
(51 mm) on top. The steering gear had 4-inch (100 mm) protection
on the sides with 60-16 mm on the deck.
Her flight deck was 814 by 86 feet (248 m × 26 m) and her hangar
deck was 546 by 63 feet (166 m × 19 m) and 17 feet 3 inches
(5.26 m) high. She had three aircraft elevators each 48 by 44 feet
(15 by 13 m) with a lifting capacity of 17,000 pounds (7,700 kg). She
had two flight-deck and one hangar-deck hydraulic catapults and
equipped with Mark IV Mod 3A arresting gear with a capability of
16,000 pounds (7,300 kg) and 85 miles per hour (137 km/h). She
was designed to host a Carrier Air Group of 18 fighters, 18 bombers,
37 scout planes, 18 torpedo bombers, and 6 utility aircraft.
Aviation facilities: Hangar deck catapult removed
Hornet had a length of 770 feet (235 m) at the waterline and 824 feet
9 inches (251.38 m) overall. She had a beam of 83 feet 3 inches
(25.37 m) at the waterline, 114 feet (35 m) overall, with a draft of 24
feet 4 inches (7.42 m) as designed and 28 feet (8.5 m) at full load.
She displaced 20,000 long tons (20,000 at standard load and 25,500
long tons (25,900 t) at full load. She was designed for a ship's crew
consisting of 86 officers and 1280 men and an air complement consisting
of 141 officers and 710 men. |
