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MARIN EY REVIEW. 9 --_--_ --_--_ | spar deck is to be of steel complete,without wood covering, except inside the houses and on the forecastle deck forward, where a light pine cover- ing will be used. Theship will have two masts without gaffs or sails,and # there will be twelve cargo hatches, all forward of the coal bunker and all spaced 24 feet centers. Provisions as to quality of material are practically the same as those ' applying to other steamers of the fleet. All plating is to be of open- hearth, mild steel, tested to the following specifications: Tensile strength not less than 54,000 nor more than 62,000 pounds per square inch. Limit of phosphorus not to exceed .08; elongation to be not less than 24 per Details as to sizes, thickness and weights of plates, frames, stanch- ions, angles, stringers, butt straps, rivets, forgings, etc., are all provided for in specifications, and these are matters that will be carefully looked after by representatives of the owners in the construction of all of the vessels of the fleet. In the case of these three vessels the representative of the owners is Mr. John Haug of Philadelphia. Equal care is given in the specifications as to anchors, windlasses, capstans, steam'steerer, electric light plant, deck hoist, side lights, canvas, rigging, ballast, bilge and fire pumps, and every other detail entering into equipment and outfit. There are to be two stockless anchors forward of about 3,500 pounds each, Q.strake "Keel" treble viveted buttstraps \rwets BEODESH y T \4¢-0 = 4 fs | Le we wy | | of Bee eee ie zs Sy paras. eS a et 2 ete yi pt \ i 5 7' y EE -- PL ------ Re Ge Oe ae la) ee -- Pe ieee Oxia Speced a-0" Cambered ib iu Oa-O ee a ee SS eee alee To --_------ 3" eal J A we ---- Principal Dimensions feugth Overall 3380-6 ys Length on keel NIG SuOn : Beam Moulded 4q- oO. Beam &xtreme 44.2% BRivels Dept kL Wonlded 26-0 Dept IE Jrom haat ES lop of Slee slyake. aCe T a dteig ht Geliveen decks 9 - ae Depth of tank at Center 4-6" ; lp 3 Gx 12- 9° eye Li 12 x 30* Baie La PTS ke MEE ease oak Chafing Pieces, Sia ea CT Rivetin Scantlines. Shannel floes 15% 340% 33" 24 "centres. 1 Strakes treble xtveted laf butts SRW. Frome Sides Gx3he x 13%,4 Channel. / a D ey eo ger aid MIDSHIP SECTION OF TWO ROCKEFELLER BARGES, BUILDING _ thet or Py AT SHIP YARD OF F. W. WHEELER & CO., WEST BAY CITY, MICH. I : cf Strake (@ulge) Gple lap butts 7/8 Rivets Wel frames \Sx340x%33% every §-0° meee 4 ty, H_strake Sheer" 4 ple lapbutts & tnside straps "Rw Teverse frames 3»3%7/5* 4 oie aoa Weck Stringer overlap butts & inside strabs Hola Stringer flanged plate § SxSx25" channel ' Nees «-- thle uivetetL 34, Rivets. old stanchions every £-0 mone [rece from tank 4 h ay ay Wham deck Stanger treble vweted overlabbutts Axi to Upper Beck. 12x24* ' « --Dpardeck plating double _.._» _._ Stern post_9%s Stem xs Rudder $4 da Stock 9 43x74 / tee Da ans ae arends « ci n « uw MNudder Pintle 4% dia. be 4 ex1d%" nee kk dank toh plating channel _seomstraps double rE ce aks Reta f Rweted 3 gwets. 4 i Max oun plate Treble nveted over Lap butts Wrwets i Rider plate Creble riveted Putts obs Wrivets i Gentre Keelson . «double buttstraps a4. pee maf Longitudinal guders « everlab butts 94 _. ee ' » Hola. Stringer % Rivets C i < Cf stralm (Shell) > treble niveted overlap butts 72 niyets. ' Dp 3 ; sete : ines ee uN 3S j 2 L 5:0 §-90 | is toma 7K _Binvela | i DS . x " oo ! | ale Be ams aN c : gg Sd = Bra* Ls" HS i = iB 1 Se | \peaxay: aes ° : >: \ he bP, \ fans (gate ae oS Rees F 18 Z \\ a : Sans : l. ¥ a 4 Nees 2 i) : « a * is* " x Ze, se ty ea se isi .prwe-- i : pe 4 e yi ee : \ se ben ; eo aN i Y i Soci | | Hanged Plate 4! isxsa® 1 { ¢ £ -- > Q eee o 2 Wetere BK sett it Vie ale me > eight inches and reduction not less than 45 per cent. Reports of oes © be furnished with invoices, and plates not to be run over or €r theoretical weight more than 2% per cent. All shapes that are : ae eee also of open hearth steel. All other shapes of Bessemer bie if open hearth steel as desired by the builder. Rivets of the best ai ts a. steel, the limit of phosphorus to be .06, limit of sulphur .06 sfnanes € strength not less than 52,000 nor more than 60,000 pounds per : hci ma Materials to be tested at makers' works to these require- Shuita Y adisinterested party to represent both steel maker and ship €r, and to be appointed by the ship builder. and one kedge anchor of about 1,200 pounds, to be carried aft. In addi- tion to the regular steam windlass and capstan forward, with reversible steam capstan aft, there are to be two deck capstans on the spar deck be- tween the forward and after houses, all tobe furnished by the American Ship Windlass Co. The main engines are to be of the vertical triple expansion type, having cylinders 25, 40 and 67 inches diameter with a common stroke of 44 inches. Cylinders are to be lagged with sheet steel. The main valve will be of the piston type for the high and low pressure cylinders, with double ported slide valve for the low pressure cylinder, all to be worked ~*