“GEM” CLASS.
(Completed 1905.)

AMETHYST.
TOPAZE.
DIAMOND.
SAPPHIRE.

Light cruisers of 3,000 tons, with a speed of 22 knots. Armed with twelve 4-in. and some smaller quick-firing guns, with two torpedo tubes on deck. The coal supply is 500 tons, the complement 296 officers and men, and the average cost, complete, was about £235,000.

CHALLENGER CLASS.
(Completed 1904-06.)

CHALLENGER.
ENCOUNTER (Australian Navy).

These vessels are protected cruisers of 5,880 tons, capable of steaming 21 knots. The armament consists of eleven 6-in. and some smaller quick-firing guns. Over the engines and boilers there is a 3-in. steel protective deck. The coal capacity is 1,225 tons, the complement 454 officers and men, and they averaged, complete, £360,000.

HIGHFLYER CLASS.
(Completed 1900-01.)

HERMES.
HYACINTH.
HIGHFLYER.

These protected cruisers displace 5,600 tons. They have a speed of 20 knots, and are armed with eleven 6-in., several smaller quick-firing guns, and two torpedo tubes. The coal capacity is 1,100 tons. They carry a complement of 456 officers and men, and each ship cost, complete, over £280,000.

PELORUS CLASS.
(Completed 1897-1901.)