Steam at 110 lb. pressure is
supplied from a double ended boiler 12 feet 9 inches diameter and fifteen
feet long, having a total heating surface of 2,270 square feet, and
identical in design with the boiler supplied for the other engines. The
propellers were made exactly alike in all respects, and the ships being
likewise precisely alike, a comparison of the performances of the one
fitted with the triple engines could be made with as little grounds for
differences of opinion as is possible. One of the ships fitted with the
ordinary compound engines was named the Kovno, that with the triple
compound engines the Draco. Their dimensions are as follows:
Feet. Inches.
Length between perpendiculars. 270 0
Breadth. 34 0
Depth of hold. 18 3
And of 1,700 tons gross register. They are ordinary cargo boats, built of
steel, having a raised quarter deck and long bridge amidships, but
nothing about them otherwise requires comment.
After making a voyage or two to the Baltic, and finding that everything
was working satisfactorily, the Kovno was loaded with 2,400 tons dead
weight, and sailed in January, 1883, for Buenos Ayres; the Draco was
loaded with 2,425 tons dead weight, and sailed March, 1883, for Bombay,
the distance in both cases being about 6,400 miles.
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