CONVINCING COMPARISONS.

Press, Volume L, Issue 14917, 16 March 1914, Page 9

CONVINCING COMPARISONS.

For the purpose of comparison with tile Cairnross, another new vessel, the Cairngowan, was tasted at tho same time, both ships running side by side in tho Bristol Channel and English Channel for 36 hours. The Cairngowau is an exact duplicate of the Cairnross, except that tho former is propelled by a single screw driven by triplo-expnnsion reciprocating engines. The boiler-power of the two ships is identical. Both were trimmed to the* same draught and bunker coals were supplied from the same colliery. During tho trial tho propeller revolutions of both vessels were from 61 to 63 per minute, and the results proved highly favourable to the geared tuxbine, an economy of 15 per cent, in coal consumption being recorded. The Cairnross fully demonstrated thp economy of her engines as compared with those of tho Cairngowan on the earn© voyage. At an average speed of 10$ knots the Cairnross worked on a little over 27 tons of coal per day, while her sister required over 32 tons per day. The net saving in the case of the Cairnross represented from £1200 to £1450 per annum for coal alone, apart from the saving in oil and wear and tear, and tho increased cargo capacity. On her present voyag« from Montreal the engines of tho Cairnross worked splendidly, and she averaged 10$ kuotn throughout, in spite of a rough handling for five days in a hurricane after leaving Montreal.