HA. 19 (Japanese Midget Submarine)

HA. 19 grounded in the surf on Oahu after the attack on Pearl Harbor, December 1941
History
Japan
Name:	HA. 19
Builder:	Kure Naval Dockyard, Kure
Launched:	1938
Captured:	Grounded, Oahu 7 December 1941
Status:	Museum Exhibit
General characteristics
Type:	Type A Kō-hyōteki-class submarine
Displacement:	46 long tons (47 t) submerged
Length:	23.9 m (78 ft 5 in)
Beam:	1.8 m (5 ft 11 in)
Height:	3 m (9 ft 10 in)
Propulsion:	1 × electric motor, 600 hp (447 kW) 2 × counter-rotating screws
Speed:	23 knots (43 km/h; 26 mph) surfaced 19 knots (35 km/h; 22 mph) submerged
Range:	100 nmi (190 km) at 2 kn (3.7 km/h; 2.3 mph) 80 nmi (150 km) at 6 kn (11 km/h; 6.9 mph) 18 nmi (33 km) at 19 kn (35 km/h; 22 mph)
Test depth:	30 m (98 ft)
Complement:	2
Armament:	2 × 450 mm (17.7 in) torpedoes, muzzle-loaded into tubes 1 × 300 lb (140 kg) scuttling charge
HA. 19 (midget submarine)
U.S. National Register of Historic Places
U.S. National Historic Landmark
Location	Fredericksburg, Texas, USA (formerly at Naval Station Key West, Key West, Florida)
Coordinates	30°16′20″N 98°52′6″W / 30.27222°N 98.86833°W / 30.27222; -98.86833Coordinates: 30°16′20″N 98°52′6″W / 30.27222°N 98.86833°W / 30.27222; -98.86833
Built	1941
Architect	Kure Dockyard
NRHP reference #	89001428
Significant dates
Added to NRHP	30 June 1989
Designated NHL	30 June 1989

The HA. 19 (also known as Japanese Midget Submarine "C" by the US Navy) is a historic Imperial Japanese Navy Type A Kō-hyōteki-class midget submarine that was part of the Japanese attack on Pearl Harbor on 7 December 1941. This submarine was ordered to enter Pearl Harbor then attack the American warships with its torpedoes and then be scuttled with explosives next to a warship. However, she did not enter the harbor, and was grounded and captured. The submarine was eventually put on display near the submarine squadron at Naval Station Key West, Florida, then moved to the nearby Key West Lighthouse and Military Museum. HA. 19 is now displayed at the National Museum of the Pacific War in Fredericksburg, Texas.

HA. 19 was built at Kure Naval Dockyard, Kure, Hiroshima, Japan as a Type A Kō-hyōteki-class midget submarine in 1938. The Type 92 periscope was installed later in May 1941.

In November 1941, HA. 19 was part of the Kido Butai, carried by the Type C cruiser submarine I-24, its mother ship, from the Kamegakubi Naval Proving Ground. Its two-man crew consisted of Ensign Kazuo Sakamaki (1918–1999) and Chief Warrant Officer Kiyoshi Inagaki (1915–1941).

On 7 December 1941 at 3:30am, HA. 19 launched from I-24 with a broken gyrocompass. The crew had four and a half hours to get to Pearl Harbor, Hawaii to join the attack on Pearl Harbor and had to fix the compass en route.