Hawthorn, Leslie & Co., of Newcastle on Tyne, with two sets of
vertical triple-expansion engines, capable of developing collectively
9,000 h.p., which is estimated to realize a speed of 19.75 knots. As
vertical engines have been adopted, the necessary protection of the
cylinders, which project above the steel protective deck, is obtained
by fitting an armored breastwork of steel 5 in. thick, supported by a
7 in. teak backing, around the engine hatchway. Provision is made for
a bunker coal capacity of 400 tons, and this is calculated to give a
radius of action of 8,000 knots at a reduced speed of 10 knots. The
armament of the ship will consist of two 6 in. breech-loading guns on
central pivot stands, one mounted on the poop and another on the
forecastle; six quick-firing 4.7 in. guns, mounted three on each
broadside; eight quick-firing 6-pounder guns, four on each broadside;
besides one 3-pounder Hotchkiss and four 5-barrel Nordenfeldt guns. In
addition four torpedo tubes are fitted, one forward, one aft, and one
on each broadside. All the necessary appliances for manipulating the
engines, guns, steering gear, etc., when in action, are placed in a
conning tower built of steel 3 in. thick, and situated at the after
end of the forecastle. The Æolus will be rigged with two pole mast,
carrying light fore and aft sails only. Her total cost is estimated at
£188,350, of which £100,000 is regarded as the cost of hull. When
complete she will be manned by a complement of 254 officers and men.
In the slipway vacated by the Æolus a second class cruiser, to be
named the Hermione, will be laid down forthwith. The Hermione may be
regarded as an enlarged Æolus, and will measure 320 ft. in length, 49
ft. 6 in. in breadth, with a displacement of 4,360 tons, on a mean
draught of water of 19 ft. The new cruiser will be supplied with
propelling machinery of the same power as the Æolus, to be constructed
in the dockyard from Admiralty designs. The coal capacity of the
Hermione is to be 400 tons, and her estimated speed is 19.5 knots.