The dimensions, etc., of all are identical, and are as follows:—

Displacement 622 tons.

Length 154¼ ft.

Beam 27 ft.

Draught (mean) 9¼ ft.

Horse-power 700.

Trial speed (_circa_) 12 knots.

Screws Two.

Coal supply 60 tons.

Complement 104.

[Illustration: [_Official photo._