"THE MAZE BELOW."

Dominion, Volume 2, Issue 535, 16 June 1909, Page 11

"THE MAZE BELOW."

WHAT MARINE ENGINES DO. "In modern steamships," said Mr. H. "C. Tewsley ■at the supper of the Institute of Marine Engineers on Monday evening, "especially in thoso of tile-Royal Navy, the auxiliary machinery and fittings aro of great importance. In H.M.S. Powerful, for example, there are different auxiliary steam engines for various purposes, in addition to the main engines of the ship. In the battleships of the Majestio . olass there are 72 auxiliary steam engines and 32 hydraulic machines, turning engines, lifts, bollards, etc. Those vessels aro really huge floating war machines, where all the principal operations for working, steering, and fighting are performed by steam or hydraulio power with little "manual labour, so that the' vessel's efficiency will depend entirely on the condition of the machinery department. "The enumeration of the various kinds of work on board ships that are now carried out by eteam power would be sufficient to show the importance of this part of the duty of the engineer. • In : addition - to the milin propelling engines, steam power 'is : used for ventilating the ship and supplying air to the boilers, weighing the anchor, steering, pumping, working turrets, loading, training, and working the funs, compressing air for charging and launching torpedoes, putting torpedo and other boats into the water, distilling fresh water, producing electricity:-for lighting the vessel, for searohlightsVand .driving motors, for refrigerating purposes, .for actuating .the workshop machines,»lifting .coal into the vessel, etc.". The following, list includes the most imnortant of the auxiliary engines, of a warship Four circulating pumps, four fire' and bilge pumps, eight fans for forced'draft, twelve fans for ventilating, two capstan engines, two steering engines, four air-compressing- engines, two hydraulic pumping engines, one auxiliary hydraulic pumping 'engine, four barbette-turn-ing engines, three dynamo engines,; two hoist engines, two coal-hoist engines,' four ashhoist engines, four: main feed pumps, four auxiliary feed pumps; two .auxiliary circulating engines; two oranfcpit pumps, ond drain tank pump," two_ distiller pumps, etc., one evaporator pump, two turning engines, one workshop, engine,; six bollard engines, two starting ana reversing engines. In addition* there, are also the propelling and auxiliary engines of three steam boats, the maohinery ?f the 'Whitehead torpedoes, and various motors worked by water and air pressure, an'd last, but not least, the steam cooking apparatus.