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SUMA protected cruisers (1896 - 1899)


Photo



Suma

Ships


Name No Yard No Builder Laid down Launched Comp Fate
須磨 [Suma]     Yokosuka K K 8/1892 9/3/1895 12/1896 stricken 1923
明石 [Akashi]     Yokosuka K K 8/1894 18/12/1897 3/1899 stricken 1923


Technical data


Displacement normal, t

Suma: 2657

Akashi: 2756

Displacement full, t 
Length, m

Suma: 93.5 pp

Akashi: 90.0 pp 93.3 wl

Breadth, m

Suma: 12.2

Akashi: 12.7

Draught, m

Suma: 4.63

Akashi: 4.80

No of shafts

2

Machinery

Suma: 2 VTE, 8 locomotive boilers

Akashi: 2 VTE, 9 cylindrical boilers

Power, h. p.

8500

Max speed, kts

20

Fuel, t

coal 600

Endurance, nm(kts)12000(10)
Armour, mm

Harvey steel - deck: 25, slopes: 51, shields: 114

Armament

2 x 1 - 152/40 Armstrong Z, 6 x 1 - 120/40 Armstrong T, 10 x 1 - 47/40 3pdr Hotchkiss Mk I, 4 x 1 - 47/30 21/2pdr Hotchkiss Mk I, 2 - 381 TT (beam)

Complement

310



Standard scale images


<i>Akashi</i> 1899
Akashi 1899


Graphics


<i>Suma</i>
Suma
<i> Akashi</i>
Akashi


Ship project history


These were the first cruisers to be built entirely to Japanese designs and with Japanese materials, except for the guns which were imported from Britain. The design and disposition of the armament were similar in many ways to the Akitsushima and dimensions were practically the same. Machinery, however, was VTE, instead of the HTE of the Akitsushima. Power developed at forced draught was almost the same as in the Akitsushima, giving an extra knot at maximum speed. The boilers, on the other hand, were not so efficient, comprising eight locomotive boilers in the Suma and nine single-ended in the Akashi.

The Suma was found to lack stability when completed and proved to be a very wet ship. The Akashi was still on the stocks when these faults came to light and so she was altered and completed with greater freeboard amidships, making her flush-decked, and she lacked fighting tops to her masts.

Ship protection


25mm deck had 51mm slopes, guns were protected by 114mm shields. CT had 114mm sides.

Modernizations


1908, Suma: boilers were replaced by 4 Miyabara

1912, Akashi: boilers were replaced by 9 Niclausse

Naval service


In 1922 they were disarmed and next year written off. Suma served as a hulk and has been handed over on demolition in 1928. Akashi was used as a target and was sunk by air torpedoes in August, 1930.