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last tanks in as brief a period as possible. ‘For this purpose on the S. S. Harry CouLsBy two main ballast pumps, of centrifugal type with 15- inch suction, each direct connected to compound vertical engines 8 x 14 x 10 inches have been fitted. These pumps were made by the Morris Ma- chine Works. They operate at 275 revolutions per minute and each pump will deliver 8000 gallons per minute at a 30-foot head. In addition to these centrifugal pumps there are two hori- L T+9 & T-10 wil ime Js) . id 7 as ne ieee S aifiieges 4"' Layer of Mouldable Firebrick Y%" Black Plate _ 2 Openings, 12" x 24"! i Hi i i iy AUUUUUE '4" Ash Pan to friction in long pipes and time lost in drainage the working time will probably be nearer 180 minutes or 3 hours. This is on the assumption that the tanks are filled to their total capacity which is an unusual condi- tion. For mechanical ejection of ashes two 5-inch ash guns of hydraulic type are used, one located on each side of the fire room. No boiler water purifiers are required as the COULBY is fitted with a surface condenser. 14" Asbestos = SY N ot se ~~ ” ES a g 4 see fon Ps 3 % 2 = a ~~ i=] v E o eo) cc S. = ¥ s £ x“ s I _ Front Plate, CROSS SECTION FORE AND AFT THROUGH ONE OF THE THREE BABCOCK & WILCOX WATER TUBE BOILERS ON zontal duplex steam pumps 10 x 14 x 16 inches which are capable of each delivering 1400 gallons per minute. These pumps were built by the War- ren Steam Pump Co. The combined capacity of the four pumps is 18,800 gallons, or 78 tons per minute. Including the fore peak the total water ballast capacity is 9003 short tons. From the pump capacities noted above this ballast could be dis- charged in about 116 minutes but due THE S. S. HARRY COULBY In order to try to comply with regu- lations prohibiting the smoke nuisance the boilers have been fitted with pat- ented smoke consumers of the Barkers instant flame type as designed and built by the Canton Combustion Co. All hot water drains are piped to a feed and filter tank of latest design, installed in the engine room high up on a stringer plate. In the lay- out of the engine room special thought was given to the conservation of heat MARINE REVIEW—October, 1927 aus eS >< <a> sy | >. 4 ) = i A AN hn A PN >< a < >< — — a ee] ae 2S ce) 6600 °o TTT TTT TT E HADUCQOLUUUOGENNONDOAHUEQUOVADUOGOELELOOQDAOLIOEQUUUEGUOUEOGUNGOGAGSUOCUGHUGGUUIOORENSOQDIOGYORSAUOVONOAUGUSUAGGGEUOCHINGTIOGUGGUOOOQOGOQUGGRNGNUUOONNGUGIOOGOOGGOOOONECEOUNEOOEDSIONGUOGTIUREAIOSEDOUCGOGUNTANLGNGEHOOOGENTENOUOOGADEAADEESEATONGRGUOUUUEADEGOOONOGOEGUO AGUA ANOEADUOASUOURRUTONEAATELGUUUAU EAA NEAA AEDT GU HUTTE mas aye <q os Lae aay tem > | st Fe | = EeRG ge S ea LOADING SCALE. | LOADING SCALE S.S. HARRY COULBY 19