NAVYPEDIA

Photo

Otowa 1906

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
音羽 [Otowa]			Yokosuka K K	3.1.1903	2.11.1903	6.9.1904	wrecked 1.8.1917

Technical data

Displacement normal, t	3000
Displacement full, t
Length, m	98.0 pp 103.9 oa
Breadth, m	12.6
Draught, m	4.80
No of shafts	2
Machinery	2 4-cyl VTE, 10 Kampon boilers
Power, h. p.	10000
Max speed, kts	21
Fuel, t	coal 875
Endurance, nm(kts)	7000(10)
Armour, mm	Harvey nickel steel - deck: 76 - 51, gun shields: 38, CT: 102
Armament	2 x 1 - 152/40 Armstrong Z, 6 x 1 - 120/40 Armstrong T, 4 x 1 - 76/40 Armstrong N, 2 - 450 TT (beam)
Complement	312

Standard scale images

Graphics

Project history

The Otowa, ordered under the 1896-1897 Programme, was a smaller, faster version of the Tsushima class, but with a lighter armament. The design reverted to the sponsoned 120mm as in the earlier Suma; instead of beam-mounted 152mm guns, the fore and aft 152mm were retained. The Otowa was the first ship to be equipped with the Japanese-designed Kampon water-rube boiler. The engines were identical to those in the Tsushima with a slight increase in hp. The boilers were of the three-drum pattern and apart from having curved tubes, were very similar to the Yarrow boiler.

The armoured deck was 13mm thicker than in the Tsushima, but still not as strong as that fitted to the Elswick designed cruisers.

Ship protection

Protective deck had 76mm flat and 76mm slopes amidships and 51mm flat and slopes (turtleback form) at ship ends. Guns were protected by 38mm shields, CT had 102mm sides.

Modernizations

None.

Naval service

The Otowa was present at the Battle of Tsushima and was lost when she ran aground on the Japanese coast (near Daio Saki, Mieken, Shima Hanto) 1.8.1917.