Tomozuru 1934
Tomozuru 1941
Tomozuru 1941
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| 友鶴 [Tomozuru] | Maizuru K K | 11/1932 | 1.10.1933 | 2.1934 | sunk 24.3.1945 | ||
| 千鳥 [Chidori] | Maizuru K K | 10/1931 | 1.4.1933 | 11.1933 | sunk 24.12.1944 | ||
| 真鶴 [Manazuru] | Fujinagata, Osaka | 12/1933 | 11.7.1933 | 11/1934 | sunk 1.3.1945 | ||
| 初雁 [Hatsukari] | Fujinagata, Osaka | 4/1933 | 19.12.1933 | 7.1934 | surrendered 8.1945, BU 1946 |
| Data variant | as completed |
|
Displacement standard, t |
535 |
|
Displacement full, t |
737 |
|
Length, m |
77.5 pp 79.0 wl 82.0 oa |
|
Breadth, m |
7.40 |
|
Draught, m |
2.50 |
|
No of shafts |
2 |
|
Machinery |
2 sets Kampon geared steam turbines, 2 Kampon boilers |
|
Power, h. p. |
11000 |
|
Max speed, kts |
30 |
|
Fuel, t |
oil 150 |
| Endurance, nm(kts) | 9000(10) |
|
Armament |
1 x 2 - 127/50 3-shiki, 1 x 1 - 127/50 3-shiki, 1 x 1 - 40/62 HI 91-shiki, 2 x 2 - 533 TT, 2 DCT |
|
Complement |
113 |
Project history: First Japanese ships built according to requirements of London Naval Treaty to 600t torpedo boats. Four ships (Nos1-4) were ordered under the 1931 programme. As well as all Japanese designs of that period, they had the maximum fire power at minimum sizes. Armament originally consisted of three 127mm/50 guns in twin and single mounts, 40mm Vickers MG and two twin 533mm TTs. These torpedo boats considerably exceeded French and Italian, developed on conditions of the same treaty. On arms they could be compared even to some destroyers, armament shared 22.7% of displacement! For redundant upper weight it was not necessary to wait for payment long. After three weeks after commission Tomozuru has shared in manoeuvres. On March, 12th, 1934 during night torpedo attack going in rough sea with 14kts speed torpedo boat has turned over and remained afloat with bottom up. Soon she was searched and towed off to Sasebo. Next day Tomozuru was returned to normal position and entered into dock. Catastrophe became a direct consequence of an insufficient stability. Building of remained Manazuru and Hatsukari at once have suspended.
In August-December, 1936 all 4 ships passed full reconstruction at Maizuru DYd. Both 127mm mounts and aft TT were removed, being replaced by 3 120mm/45 single guns with shields, two of which have taken former places, and third was mounted on a place of removed TT, armament weight has thus decreased more than on 60t. 40-mm MG was removed. Bridge height was moderated by one level. Standard displacement after modernization was increased from 535 to 600t and full from 737 to 815t (98t of solid ballast were added), and max speed has fallen to 28kts. After carrying out of all works the stability accepted comprehensible value.
Modernizations: 8 - 12.1936, all: After capsizing of Tomozuru all units of the class were reconstructed with data as given in the table.
| Data variant | 1936 modernization |
|
Displacement standard, t |
600 |
|
Displacement full, t |
815 |
|
Length, m |
77.5 pp 79.0 wl 82.0 oa |
|
Breadth, m |
7.40 |
|
Draught, m |
|
|
No of shafts |
2 |
|
Machinery |
2 sets Kampon geared steam turbines, 2 Kampon boilers |
|
Power, h. p. |
11000 |
|
Max speed, kts |
28 |
|
Fuel, t |
oil 150 |
|
Endurance, nm(kts) |
9000(10) |
|
Armament |
3 x 1 - 120/45 11-shiki, 1 x 1 - 7.7/80, 1 x 2 - 533 TT, 2 DCT |
|
Complement |
113 |
1942, all: - 1 x 1 - 120/45 (No 3), 1 x 1 - 7.7/80; + 2 x 2 - 25/60 96-shiki, 4 DCT (totally 48)
1944, all: + 6 x 1 - 25/60 96-shiki
Naval service:
Manazuru 9.9.1944
was damaged by US submarine Queenfish, 1.3.1945
she was sunk at Okinawa by US carrier aircraft. Chidori 24.12.1944
was sunk SW off Yokosuka by US submarine Tilefish.
Tomozuru 24.3.1945 was sunk by
US carier aircraft in 230nm
SE off Shanghai. Hatsukari 20.3.1945 was damaged by
US Army aircraft.
Chidori 12.1936
© Ivan Gogin, 2008-14