Show de Delc de ite lc boilers boiler I 1 though at sea it Is 13 water winter everywhere that water la Is of ef no more use for the ships tubular boilers than for human consumption in fart fact humans humana may drink with impunity water which will de cle stroy a naval boiler the modern tube boiler requires distilled water just as a motorcar motor car does too much j air produces rust the least wt salt i causes overheating and distortion whilst any taint of ct oil causes ero 1 slon of the turbine blades but whilst boilers can be kept hept clean and efficient the ships bottom Is 19 necessarily r exposes to seawater sea tea water arid and sea life an item of at least 1160 1150 appears annually in naval accounts for the removal of barn barnachez barnac acles lez I 1 in dry dock and it has deen been estl esti I 1 mated that rust destroys des troya 1 1 tons of iron and steel every year tit bits magazine |