MODERN MARINE PROPULSION.

Auckland Star, Volume LVII, Issue 135, 9 June 1926, Page 8

MODERN MARINE PROPULSION.

THE DIESEL ENGINE.

LABOUR COSTS SAVED.

'(" tferr York Federated Freee.-)

The last work in labour-displacing machinery on the high seas is the S.s. Gripsholm. Swedish-American liner of 23,500 tons displacement, the fif>t big Diesel propelled passenger boat to put into New York Harbour. She spells the coming revolution in marine transportation that will leave thousands of engineroom men on the beach without jobs. Her first engineer told mc what her twin Burmeister and Wain internal combustion engines could do with a force of only 39 men: "It would require at least 150 men to get the same 22,000 horae-power and 17$ knots an hour with the old coal to get the same 22,000 horse-power and burning system," he eaid. " And about 75 men with an oil-burning steamship. Wβ need only 11 engineers, with 28 oilers, machinists and other engine-room attendants. Think what that means." It means a lot to the seamen's unions, as half to two-thirds of the firemen, oilers, water tenders, wipers and coal passers find their jobs gone. And their jobs are going fast. Sweden is in the van of Diesel construction with 85 pcs cent of the tonnage now on her yards of that type, but the world as a whole runs over 60 per cent. Bethlehem Steel already has two 22,000-ton freighters, built in Hamburg, on the ore run from Chile to Sparrow's Point, Maryland, and the U.S. Shipping Board is fitting 14 ships with Diesel engines. The staff reduction is not entirely confined to belo wdecks. Above, fewer deck hands are needed, for the Diesel boat has neither smoke nor soot. The two stacks on the Gripsholm are dummies, concessions to prevailing fashion of marine architecture. The ernde oil used as fuel is not burned under boilers, but is exploded under high pressure, much as gasoline is exploded in automobiles. Other savings to the management, besides those in wages, are effected, for the Diesels use only half the oil of an oil-burning steamship. And this, in turn ,mc ans a saving in cargo space, added to the cargo space gained by the elimination of the fire-room and boilers.

On this new smokeless liner you see electricity carried to the farthest point it has gained on the water. Even the winches or donkey engines that work the cargo, are electrically driven, and the cooking and heating conies from the same agency. There is less vibration and more cleanliness. But for the workers the basic grievanca of low wagas remains—something like 40 dollars a month in American money, for the average engine-room man below the rank of engineer and about 52 dollars up for the latter. And on these wages whn the worker has made a few expenditures in port he is broke again anci ready to ship out again on another lewwage voyage.