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able paper recently read before the institution, and it would unduly pro- long this paper to give and discuss 'all calculations that have been made. For the present it will probably be sufficient to show the principal bases THe Marine REVIEW steamers engaged in carrying oil in bulk. © : ; Fig. 1 (Plate I) is a midship sec- ordinary _ transverse- tion < of © an framed vessel. For purposes of comparison, a Fig. 7. For convenience in calculation a mean load is assumed. The figures obtained, without as- suming any internal support from the cargo, might reasonably be taken as the stresses the frames are subject to . ER EE CS A ee ED CC EE ESS ee SE OES seat O ° Or eee, oP Cc Ole oot 1 OE O ° ° O O> OLB O teas Oo Oo Oo Ores: O Feel Osc 0 > 2 o 2 a 2 oO o 9 09 9 BY oc 2 10 ° 19.0.0" © 2 which have been worked to, and to state the result of these calculations, for determining the main scantlings of an oil-carrying steamer now be- tie built by my firm, ~Messrs. R. Craggs & Sons, Ltd., Middlesbrough, for Messrs. Lennard's Carrying Co., Ltd., a firm. who has had considerable experience in managing and repairing strip of plating corresponding to a frame space is considered as part of the frame girder. The stress is then ascertained by assuming a water load on the frame girder shown by the line drawn from the gunwale-to a point A, the distance D correspond- ing to the depth of the lower part of the frame girder below the gunwale. Fig .8. under ordinary working conditions, the head of water assumed at the water line corresponding to the free- board, and being a fair allowance for the increased pressure due to waves, ete.; in "any ease, the' figures. need only be used in a comparative sense, although investigations in many cases show the calculated stresses to be ---- taro > UU aD a eta te kk *