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Poe eRe eee ‘ x Four Modern Types of Power Installed in River Towboats Diesel Direct Twin Screw PNEINIG ciesesssireseasstyscencsesseereveesse0506 WW Llliam Dickinson Type (towboat or packet) ..........0..LOWboat Owner ... .-Marquette Cement Co. Builder ..... seaman Mfg. Co. Completed ....... i .Oct., 1930 Length overall feet Sieeieisksc Lao Beam, molded, feet. ....: Depth molded, feet ..... ie i NEBR OPW OOGS sic stsnsbsccrebercsovabasecasses Weeieacs Steel Dive .iscccssseseesseeessereeeeeeeeL Win Screw, tunnel stern Engines....Two 6-cylinder = injection diesel RT d da Sorceeetiucis chats sveesececsecswscesescaccecsaacese RystimateseaersieOad Horsepower at 225 r.p.m. “each engine........850 Where operated ......sesescesreeeseees stistansesceeeteenenenen wueue.On Mississippi and Missouri rivers PROPS ancy cates cas shcsdaavssnsssestonccctsatasee Sghacweateueeh oss Half tunnels in which “propellers operate are hexagonal in shape for offering more resistance to rotary motion of water, the belief being that an increase in thrust is obtained. SeeSavepai sites Secbecsssveezess ee ee everer ae. 1800) Type (towboat or packet) tte Bes ey dag Towboat Owner... Mississippi Valley Barge Line Builder — aie The Dravo ee Sons Co. Completed ae .....9ept. 19, 1930 Length, feet ...200 Beam: feet oo... .:..3 Pee iN) Depth, feet, inches . 10 6 DIPCIGOr WOOd) s.r ee Steel Drive RE) Se See tunnel stern ‘twin screw Engine........(2) Unaflow universal condensing GL eee sere eG eh ee Oil Horsepower, both engines......cccccccccscscscseesseseees 2000 Where operated Ohio and Mississippi rivers Cargo capacity, in ce aad Reeds Rye 20-30 Remarks _ placed in operation by the company. The Tennessee is powered with Unafiow engines, the Indiana and Louisiana with turbine elec- tric. Began operations late 1930. Towboat William Dickinson owned by Marquette Cement Co. sone Diesel Electric Twin Screw NBM eis tl einiaihhes cen See RL WaEION Type (towboat or packet) . .... Towboat Owner.......... Tennessee Coal, Iron & R. R. Co. Buildéfss. sere car ee ee dasseaseny American Bridge ‘Co. & Carnegie Steel Co. Completed ........ Siscedeushiosetcsvettorvisesisvesse QING 21, 1929 Length overall, feet inches ei atean ick Beam, Molded niiicccccc.civeiviee wae se Depth molded ........ Steel or wood ... DYING) Sasssconens ae twin screw, tunnel stern Engines bs eles Six “cylinder solid injection diesel. Each driving a 335-kilowatt, 250- volt direct current generator, supplying current to two electric itt motors Puech iicousieens Ugsecsudgostesteaseouse sevotiec@de Horsepower, each propulsion motor... 400 s.h.p. Where operated Sees svepastaaraieaeecace se Warrior River Capacity in barges . RENIAEKS -ocsatene ee neeniane Diesel electric propelling equipment. has. also been used in various towboats in connection with stern wheel drive. Towboat Ohio owned by Mississippi Valley Barge Line Towboat Dwight F. Davis owned by Inland Waterways Corp. MARINE REVIEW—May, 1931 Pulverized Coal Burning DN vio) = Seep eR PS fee panemte sseersses Dwight F. Davis Type (towboat or packet)............... Scteus Towboat O WEL Ej sisaseacecsassotes we.tnland Waterways Corp. Builder ..........Charles Ward Engineering Works Completed .. cama gosiaevereetens Aiseeeus April 25, 1929 Length, feet <.)...s:0 ecvhenacasaens heveaives ep Beam Leet) sss nusensteoaiae mace: Depth: fects nea auwiscscisseievessce Steel or wood Drive .... Engine....Triple expansion reciprocating steam Bn aedcaanects Pulverized coal or oil FHIOTSCDO WER b.ceskcicesuveccveissatecsacusavenctese Lensenseesoes +1000 Where: operated: d.ccscccelaticcctivcens Mississippi river Net tonnage ....... pare caleatucetaneeeoer erm wrrirecss Hit" Remarks ca ic. ciseseicssacainccncs soesusccotenense This boat is “the first vessel built for river service using pulverized coal as fuel. It is the result of a progressive attempt on the part of the owners to develop greater econ- omy. 23