The Iwate, Idzumo, Azuma, and Yakumo have Belleville boilers, the other two cylindrical. The type ship had very high horse-power; in the later vessels this was reduced, and the saving effected spent in substituting Krupp process armour for Harvey nickel on the sides.

Trial (full-speed) results were:—

Designed
speed.		Indicated
horse-power.		Trial
result.
Asama22 knots19,000 = 22knots.
Tokiwa”(?) = 22.7”
Idzumo20.75 knots15,739 = 22.04”
Iwate”(?) = 21.8”
Yakumo20 knots15,500 = 20.7”
Azuma21 knots18,000 = 21”

The first two have a pair of funnels only.

The ships are very good ones, equal in many ways to second-class battleships, but not calculated to stand battleship fire, I fancy.

The Kasuga and Nisshin were launched for Argentina in 1902 and 1903 respectively, by Messrs. Ansalds, of Genoa, Italy. They were purchased by Japan immediately before the war with Russia.

Details are—

Displacement 7700 tons.
Length 357 ft.
Beam 61½ ft.
Draught (mean) 23 ft.
Guns (in Kasuga) One 10-in. 45 cals.
Two 8-in. 45 cals.
” (in Nisshin) Four 8-in. 45 cals.
The secondary armament is in both
Fourteen 6-in. 45 cals.
Ten 12-pdrs.
2 Maxims.
Two field-guns.
Torpedo tubes Four (above water).
Designed horse-power 13,500.
Speed 20 knots.
Coal (normal) 650 tons.
” (maximum) 1100 tons.
Boilers Cylindrical.