292 
Length fore and aft at boss, 
Length fore and aft at point of blades. 
_ Greatest width of blade. 
Width of blade at boss. 
Number of blades. 
Screw is covered at aforesaid draught. 
Is it a common screw ? 
Is it a Griffith’s screw ? 
Are the blades curved ? 
State if there is anything peculiar in the 
configuration of the screw. 
Paddle-wheels—Diameter over floats. 
Length of floats. 
Breadth of floats. 
Thickness of floats. 
Number of floats. 
Centre of shaft above water-line. 
Dip of floats. 
Tf feathering floats. 
Diameter between centre of floats. 
Length of crank-arm on float. 
Centre of feathering excentric to centre of 
shaft. 
Ditto inches higher than centre of shaft, or 
inches lower than centre of shaft, 
Description of engines. 
Description of valves. 
If geared, what is the multiple of gearing ? 
Or number of teeth in wheel and ditto in 
pinion. 
Number of cylinders. 
Diameter of piston. 
Diameter of trunk. 
Length of stroke. 
Does trunk extend through both ends of 
cylinder ? 
Valves set to cut-off at 
Number of steam-ports at each end. 
Length of each. 
Breadth of each. 
Slide-valve travel. 
Steam-covyer at top. 
Steam-coyer at bottom. 
If a V on end of valve, its breadth. 
Ifa V on end of yalve, its depth. 
Steam lead at top. 
Steam lead at bottom. 
Exhaust-lap at top. 
Exhaust-lap at bottom. 
Exhaust-clearance at top. 
Exhaust-clearance at bottom. 
Is there link-motion ? 
Is there a separate expansion-valyve ? 
Grades of cut-off measured from beginning 
of stroke. 
Cut-off generally in use. (NorE.—If the 
engines are on the high- and low-pressure 
principle, fill up as much of the preceding 
as is applicable, stating which cylinder is 
referred to, and also fill up the following.) 
Description of compound engines. 
Number of high-pressure cylinders. 
Diameter of piston, 
REPORT—1862. 
Diameter of trunk, 
Length of stroke. 
Does trunk extend through ? 
Steam is cut off at from beginning. 
Exhaust opens at 
Exhaust shuts at 
Area of steam-ports. 
Number of low-pressure cylinders. 
Diameter of piston. 
Diameter of trunk. 
Length of stroke. 
Does trunk extend through ? 
Steam is admitted at 
Steam is cut off at 
Exhaust opens at 
Exhaust shuts at 
Area of steam-ports. (Notr.—As some of 
these quantities may be unknown, it will 
suffice to give particulars of valves, cover, 
lead, and travel, so that the cut-off can 
be found from them.) 
Valves of compound engines. 
Condensers —contents of each, including 
tubes, if any. 
Number of condensers 
Number of air-pumps, 
Diameter of air-pump. 
Diameter of its trunk, if any. 
Does trunk extend through ? 
Stroke of air-pump. 
Have the air-pumps foot-valves ? 
Are they double-acting ? 
Description of condenser. 
If surface condenser, can it be also used as 
a jet condenser ? 
Total number of tubes, 
Material. 
Thickness. 
Length of each between tube-plates. 
Inside diameter of tubes. 
Through what length of tubes does the 
water circulate ? 
Circulating-pumps, how many ? 
Are they double-acting ? 
Diameter of each. 
Diameter of trunk, if any. 
Length of stroke. 
Diameter of suction-pipe to each pump. 
Diameter of discharge-pipe from each pump. 
Diameter of suction-valye on ship’s side. 
How much is it opened ? 
Boilers—number of pieces. 
Total number of furnaces. 
Total length of firebars over ends. 
Width of each furnace. 
Thickness of bars at top. 
Width between bars at top. 
Total air-space through bars in one furnace. 
Area over bridges. 
Bottom of ash-pit to top of dead plate. 
Top of dead plate to crown of furnace at front. 
eee height of crown of furnace above 
ars. 
