s.|
+-------+---------+-------+-----+-------+-------+-------+
| | | | per | Knots | Knots | Knots |
| lb. | lb. | in. | min.|per hr.|per hr.|per hr.|
+-------+---------+-------+-----+-------+-------+-------+
1 | 130 | 32 | 28 |373 | 22.641| 24.956| |
2 | 130 | 32 | 28 |372.7| 27.272| 25.028| 24.992|
3 | 130 | 32 | 28 |372 | 22.784| 25.028| 25.028|
4 | 130 | 32 | 28 |377 | 27.272| 25.248| 25.138|
5 | 130 | 32 | 28 |375 | 23.225| 25.248| 25.248|
6 | 130 | 32 | 28 |377 | 27.272| | |
------+-------+---------+-------+-----+-------+-------+-------+
Means | 130 | 32 | 28 |374.5| | | 25.101|
------+-------+---------+-------+-----+-------+-------+-------+

The boat is 140 ft. long, and fitted with twin screws driven by compound
engines, one pair to each propeller. These engines are of the usual type,
constructed by Messrs. Yarrow. Each has two cylinders with cranks at 90 deg..
The framing, and, indeed, every portion not of phosphor-bronze or gun
metal, is of steel, extraordinary precautions being taken to secure
lightness. Thus the connecting rods have holes drilled through them from
end to end. The low pressure cylinders are fitted with slide valves. The
high pressure valves are of the piston type, all being worked by the
ordinary link motion and eccentrics. The engine room is not far from the
mid length of the boat, and one boiler is placed ahead and the other
astern of it. Each boiler is so arranged that it will supply either
engine or both at pleasure. The boat has therefore two funnels, one
forward and the other aft, and air is supplied to the furnaces by two
fans, one fixed on the forward and the other on the aft bulkhead of the
engine room.

The fan engines have cylinders 51/2 in. diameter and 31/2 in. stroke, and
make about 1,100 revolutions per minute when at full speed, causing a
plenum in the stokeholes of about 6 in. water pressure. Double steam
steering gear is fitted, for the forward and aft rudder respectively, and
safety from foundering is provided to an unusual degree by the
subdivision of the hull into numerous compartments, each of which is
fitted with a huge ejector, capable of throwing overboard a great body of
water. A body of water equal to the whole displacement of the boat can be
discharged in less than seven minutes. There