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Tae Marine Review sary oil supply, but four are kept in use, so that no risk is run in the event of the failure of any single pump not being at once noticed. -- Fig 4 : DIAGRAM OF FEED HEATING & SUPPLY SYSTEM. r ---------- XILIARY EXHAUST = j aan c spree Mee 1 With reference to the feed system, Ea Bro au conorhsen shown diagrammatically in. Hig, 4 TuRao GENERATORS exnAuSt ees noe (Plate 1), it should be explained that ve 4g BOILER all the auxiliaries in the ship, ex- cepting the turbo-generators and the evaporators, exhaust into ia general Room Cee HOT WELL PUMPS REGULATING VA} Fa MAIN\ FEED DISCHARGE Dt fo nN v iPES __ BULKHEAD auxr cede piscuanse Opals system of auxiliary exhaust piping iH Saux Fee eae Hees connected to the surface feed heaters, ae vere roups eens auxiliary condensers, and atmosphere. EEO PUMPS : : wor-weee | 0 The turbo-generators exhaust into an . entirely distinct system of piping con- SUCTION FROM AUXY FEEO TANK * I ech: SUCTION FROM HOTWELL - TANK fy nected to the contact feed heaters, eels F auxiliary condensers, and atmosphere... From Fig. 4 it will be seen that. the. hotwell pumps draw doom. the: hot - surface suffices to maintain the 4,700 without interfering with the general well and discharge through two feed gallons of oil which is in circulation, working of the oil supply. There are filters to the two surface feed heaters, at a temperature not exceeding 30 also reserve oil tanks having a total and thence to the contact heaters; degrees above that of the engine capacity of 4,200 gallons for use in these latter constitute the usual feed ' room. Each coil is self-contained and case of emergency. receivers, and are fitted with float : withdrawable, so that a leakage of Three of the six oil pumps, the gear, controlling not only the steam sea water from pitting or other cause discharges from which are all cross- supply to the main feed pumps, but : can readily be located and repaired connected, are ample for ail the neces- also to the hotwell pumps. In addi- ; Ric, 5. PROGRESSIVE TRIAL OFF SKELMORLIE, JULY 27, 1907. : : : T erred CROSS CONNECTION ng w = 9 DQ. 7 Ww ) « 9° _ = : oO e eo 218 oa | ig é | 6 > 4 3 ° - Vo - 9 @/ ?' DQ : : & AS ay z : wl lod ° 4 LO) SS? u = > 9 O77 8 YW fr a ° S, o' o 2 ° o Oo ee Ee 2 C/\ % a & ° ye Aa $ w SAC) o a = 8 PROPULSIVE | EFFI¢ENCY Me S 9° ; f " Ss sl 2 0 nc z ° 7 -----_| <q w . V eee ul L ae = 40;000 » - © ' x '\ \ XN XN \ S 4) NS 20|% 40)% 30,000 a \ 4 Ks ¥ MEAN REVOLUTIONS OF FOUR PROPELLERS a ay AR "Ov --1L_Mean Fg < : PP eae OF PROPELLERS es © ea: yor" 4 3 i as © _ctte | be Se 8 ae a st ea be aalsoreee wheels of eee s AN BEVOt ON Oo S Sg @ eee Bo 7 a aa 2 eo ME. Ot---) ay s- § --} et i : a) ena ta ete dete oe eee he et ° © wwe we te Em ' - . ee a" 22 23 24 25 26 KNOTS.