Shipbuilding in iron and steel / a practical treatise . . vertical frames in this shipare canted, as shown in the sketches in Figs. 85 and ^^, and havetheir heads and heels secured to the stem and the vertical keelsonplate respectively. The stern framing of this ship is illustrated in Fig. 87. Beforethe stufiing-box bulkhead the general character of the framing issimilar to that already described, special provisions being made,however, for the shaft bearers, &c. Abaft the stuffing-box bulk-head the framing is specially designed to resist the strains causedby the action of the screw propeller,
Shipbuilding in iron and steel / a practical treatise . . vertical frames in this shipare canted, as shown in the sketches in Figs. 85 and ^^, and havetheir heads and heels secured to the stem and the vertical keelsonplate respectively. The stern framing of this ship is illustrated in Fig. 87. Beforethe stufiing-box bulkhead the general character of the framing issimilar to that already described, special provisions being made,however, for the shaft bearers, &c. Abaft the stuffing-box bulk-head the framing is specially designed to resist the strains causedby the action of the screw propeller, and prevent the local vibrationso destructive to the fastenings of an iron ship, and at the sametime to accomplish this object without costly forgings or difficultworkmanship. Some reference has already been made to thecharacter of the framing between the stern post and the after-most bulkhead, but, for convenience, it may be better to give acomplete description here. The bulkhead is 14 feet before the I20 Bracket-plate System of Framing. Chap. Fig. 87. Chap. VII, Bracket-plate SysteiJi of Framing, 121 post, and is formed of |-iiic]i plating worked watertight. Its upperedge is secured to the watertight plating on the after part of thelower deck, and thus the after end of the hold is converted into awatertight compartment. All the longitudinals (except the armourshelf and the longitudinal next below it) which extend beyond thedouble bottom, are stopped at the bulkhead; but the two upperlongitudinals on each side are continued beyond the bulkhead, thearmour shelf extending around the stern, and No. 2 longitudinalbeing ended at a transverse frame just before the post. Betweenthe bulkhead and the stern post the longitudinal strength is keptup by the horizontal continuous flats marked A and B in theprofile view, and by the wrought-iron tube which takes the engineersshaft tube; all of which are strongly connected to the post andto the bulkhead. The flat A is constructed of f-in
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherlondo, bookyear1869
