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200 THe Marine REVIEW Mooet. B. July, 1909 . I think the curve of resistance for a depth of water of 1.16 x draft throws a good deal of light on the subject discussedin Mr. Taylor's paper on Suc- tion of Vessels. It accounts very large- ly for the evident increase in suction ' in shallow water, because, assuming Fig. 3a. has brought out a very good point. "The U.S. S. Michigan Renamed the The curve of resistance in shallow water shows that there is considerable breaking up of flow at the stern. With regard to final development both forms exist on the lakes today--that Wolverine." Commander W. P. White then read the paper entitled "The U. S. S. Mich- is, are actually running on the lakes. the thrust to be constant there must The design 2B 2S shows a_ saving be a very much greater acceleration of 200 H. P. on a total of 1,800 H. P. To aie water passing the stern which oyer 1B 1S." Figure the saving in 0 must set up currents over a wider ¢oal in one year. area and this, I think, largely accounts President Bowles.--We should like for the suction observed in shallow {5 hear from Mr. Babcock on _ this water. oo subject. 7 J lg Crain.--I should like to ask We 1 Bahcock 0 feliave that' Mr. if Mr. Kirby how nearly these lines Kirby said about all that was neces- A conform to his practice. cay Zo 5-0 Frank E. Kirby.--My opractice is to = ne make them as full as possible at the ge water line and fine below, making gs. a easy buttock lines. Inasmuch as_ the a - draught is limited to 20.ft. and beam Mope . B. ye from 50 to 60 ft. it goes without say- ae ab ing that water will go the 20 ft. un- 7 3-0 wlq der the ship in preference to going + oe around, following obviously the line = a of least resistance. fae = 2-0 Prof. H. C. Sadler--Mr.- Penton o. a i, -- eo ee rr) "4 5 6 ° . x ?