Standard Displacement: 5,195 tons
Complement: 453

Armament:
6-5.5”/50cal
2-5”/40cal
46-25mm
8-24” torpedo tubes

Armor:
2” side
1 ½” deck

Machinery: 4 shaft Gihon turbines
Boilers: 10 Kanpon
S.H.P.: 90,000=35 knots
Oil: 1,010 tons
Radius: 9,000 miles @ 10 knots

Ships in Class:

Jintsu
Meaning: River in Toyama Prefecture
Builder: Kawasaki Jyuko Co., Kobe
Ordered: 1921
Laid Down: 8/4/22
Launched: 12/8/23
Completed: 7/31/25
Fate: sunk, 7/5/43
Fleet Assignments:
DesRon 2 9/41-9/42
Under repair 9/42-1/43
DesRon 2 1/43-7/43
Wartime Commanders:
Capt Kozai Torazo
*Capt Sato Torajiro -7/43
Service Notes:
8/24/27 sank destroyer Warabi in collision
2/27/42 sinks HMS Electra
8/25/42 1 bomb hit between #1 and #2 guns 24 dead
7/5/43 sunk by US cruisers at 0145hrs 14 miles north of Kolombangara
(07.41S 157.15E) 484 dead and 3 saved

Kako
Meaning: River in Hyogo Prefecture
Builder: Sasebo Kaigun Kosho
Ordered: 1921
Laid Down: 2/15/22
Launched: n/a
Completed: n/a
Fate: cancelled
Fleet Assignments:
N/a
Wartime Commanders:
N/a
Service Notes:
3/17/22 cancelled

Kamo
Meaning: River in Kyoto Prefecture
Builder: n/a
Ordered: 1922
Laid Down: n/a
Launched: n/a
Completed: n/a
Fate: n/a
Fleet Assignments:
N/a
Wartime Commanders:
N/a
Service Notes:
1922 cancelled

Kizo
Meaning: River in Mie Prefecture
Builder: n/a
Ordered: 1922
Laid Down: n/a
Launched: n/a
Completed: n/a
Fate: n/a
Fleet Assignments:
N/a
Wartime Commanders:
N/a
Service Notes:
1922 cancelled

Naka
Meaning: River in Tochigi Prefecture
Builder: Yokohoma
Ordered: 1921
Laid Down: 5/21/24
Launched: 3/24/25
Completed: 10/30/25
Fate: sunk, 2/17/44
Fleet Assignments:
DesRon 4 9/41-5/42
CruDiv 14 4/43-2/44
Wartime Commanders:

Service Notes:
6/10/22 Laid Down
9/1/23 hull badly damaged by earthquake. Hull scrapped
5/21/24 Laid down for a 2nd time
8/24/27 collision with destroyer Ashi
4/1/42 hit by 1 torpedo from USS Seawolf (SS-197) in #1 boiler room, repairs
completed 4/43
6/42 Major refit #5 removed 2-5" added returned 4/43
2/17/44 sunk 35 miles west of Truk (07.15N 151.15E) by aircraft from USS Bunker Hill
284 dead 210 saved

Nayoro
Meaning: River in Nothern Hohhaido
Builder: n/a
Ordered: 1922
Laid Down: n/a
Launched: n/a
Completed: n/a
Fate: cancelled
Fleet Assignments:
N/a
Wartime Commanders:
N/a
Service Notes:
1922 cancelled

Sendai
Meaning: River in Kagoshima Prefecture
Builder: Mitsubishi
Ordered: 1921
Laid Down: 2/14/22
Launched: 10/30/23
Completed: 4/29/25
Fate: sunk, 11/3/43
Fleet Assignments:
DesRon 3 9/41-11/43
Wartime Commanders:
Capt Shimazaki Toshiro 11/41-4/42
Capt Morishita Nobue 4/42-6/43
*Capt Shoji Kiichiro 6/43-11/43
Service Notes:
1/27/42 sinks HMS Thanet
2/16/42 captures S/S Hasang
5/43 Major refit #5 5.5" removed
11/3/43 sunk by US cruisers at 0400hrs in Empress Augusta Bay, Bougainville
(06.10S 154.19E) 185 dead 311 saved