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14 MARINE REVIEW. [November 15, SHIPS BUILDING AT CHICAGO FOR SALT WATER. Plans for four steel steamers, all duplicates, building at the works of the Chicago Ship Building Co., are shown herewith. They are for the Northwestern Transportation Co., made up of New York,Chicago and Liv- erpool capitalists, whose first intention was to make a trial with them in through traffic between Chicago and Liverpool. It is understood now, however, that in view of profitable freights offered on the Atlantic sea- board of the United States the vessels will probably engage in trade along the coast upon completion early next spring. With a view to fitting them for a special charter that is offered on the seaboard, the hatches will be increased in size fore-and-aft and a turtleback built forward, Structural details are shown in the 'midship section. The vessels are of Canadian canal dimensions--256 ft. over all, 242 ft. between perpendiculars, 42 ft. beam and 26% ft. depth. They will each be provided with triple expansion ; 4 ! LO a Os TIDAL WAVE ON LAKE MICHIGAN, ELABORATE REPORT FROM UNITED STATES WEATHER BUREAU, REGARDING SEICHE OBSERVED NEAR CHICAGO IN AUGUST LAST. By HI. J. Coxe, Professor of Meteorology. On Monday afternoon, August 20, 1900, a tidal wave, or seiche, oc- curred at the southern end of Lake Michigan. The phenomenon was quite marked at Chicago, where the water rose and fell several feet. Many persons were bathing in the lake at the time of the occurrence, about 5:15 p. m., but few persons can be found who made accurate measurements of the rise and fall of the waters. In-some cases the extent of beach left by the receding waters was measured, in a few instances the distance be- i _ et t ' ee Pope a > 2 . $ A AALE Rain 3 ; =e 15 FoRLL A SHAXRO Fort AFTER bEecr et a (7% PLATE To /2" AT ENS ¢NO OF ENGINE RoOt7 FORD FORYy\L , ae i ce ye ea eee eee ee ENCES U2 ss we ie GAT CENTERS | Chown) Se to 4 4 + TX) ee, === ge dL 72" aad a me V5" y ee SGX S2E Fkor ALTER A 2 X25 s i _END OF ENGINE Root7 FORWARO| FoR Wul.,: 7 FNes 25" _ i; SCANTLINGS. a Seas : a FRAMIES GX 3*/5™ CHANNELS SPRCER 2F CENTERS 4, "u "" uv SPRCED IE FoR J£ CoLL~ BHO | " 7 a a me iy RFTER FRAMES ABAFT PEAK ayD S*S%X/0 ANGLES | oe er REITER REV FRAIIES 3° 3x72 ANGLES ' Ss | FLOORS 1S "33° CYHANNELS RT FoR'D END /5 PLATE. IN ENG Ro0l7 2O* \o < ; : a | WEB FRAMES TO UP OK RK 30° CHANNELS, "SPACED BFT CENTERS. _* Tal ¢ a, BULKHERDS Cole 15% WOLD 10. E¥B'BHOS 12-5 "AFTER PK BHO IS™ } 442 _EW7RE LEN GIN. a! g " STIFURS 4X 3x 12" ANGLES. OTHER BHOS &X3X BE" EES a hie | STEN 10x22. 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FaRE END Ys TANK MARGIN PLATE BUTTS LAPPEO TREBLE RIVET EO : i as KEEL BUTTSSTRAPS TREBLE RIVETED | Y| { ye i yy } uf Hs r ala ' ¢ : IH | t t Cen Cene i ' fs 3-9 ------ 3-9 -----H---3-9 s S | L C ZS | 20 Wiper _\HATeHeS : : -- ' x 20" SEAT A, FE x ? S7RAP 6 Bxax 72 ; u i Le + $xX3E"/2 welt LS_XS3 || CHBNNEL Se ye aan 5 z 45 LAP. 44 oe st rae had z Lod 8 U6 Kb7 © ron yk 23 rorYilLeRom .. 29:FOR Yk FRor STERN 20 For Jk Le Rom FROM STERN POST STERN POST; FORD END 2S = =--PEST Fok a BND /7™ STERV POST FORD ENE LT" > 22%" AT FeRD END % : * e MIDSHIP SECTION OF FOUR SHIPS, DUPLICATES, BUILDING AT CHICAGO FoR SALT-WATER SERVIOE, engines of 20, 33 and 54 in. cylinder diameters and 40 in. stroke, with Scotch boilers, two each, of 1214 ft. diameter and 11% ft. length. These vessels were designed by 'Capt. F. D. Herriman, chief surveyor of the Great Lakes Register, Cleveland, and are being constructed under the supervision of that register. Other vessels building under supervision of the Great Lakes Register are: At the works of the Chicago Ship Building Co., two steel steamers of 6,000 gross tons capacity each for C. W. Elphicke and others of Chicago; at the Detroit Ship Building Co.'s works, a 5,000-ton steamer for D, C. Whitney of Detroit; at the Craig works, Toledo, a freight steamer of Canadian canal dimensions for Messrs. Hawgood of Cleveland, and a passenger steamer for the Booth Packing Co. of Chicago; also a large passenger steamer at the Colling- wood Ship Building Co.'s works, Collingwood, Ont., and a freight steamer of Canadian canal dimensions at the works of the Jenks Ship Building Co., Port Huron, Mich. The directors of the Trades League of Philadelphia have apppointed a committee to confer with the New York Ship Building Co: relative to the construction of additional dry docks at Philadelphia. Recently, owing to lack of accommodations, two ships had to be sent away from Philadel- phia to be drydocked, and the League thinks that the lack of accommo- dations is hurting the town: pe ing as much as 85 to 100 feet. But it is apparent that no adequate idea of the actual rise and fall can be gained from the observations, as on a very gradually sloping beach a change in water height of 1 ft. would leave bare a large surface, while such a change on a precipitous beach would be hardly noticeable. _ Again, there was a diversity of opinion as to the char- acter of the wave itself. Many declared that the waters rushed out with- out a moment's warning and came back after the lapse of a few minutes with a rush and roar, Others held that there was considerable rise before the waters receded. This latter statement is undoubtedly correct. All agreed that the waters returned again to a point somewhat lower than that previously reached and again went out, but not so far as before. After this several rises and falls occurred, each less than its predecessor, until normal conditions were resumed. It is probable that there was only one actual tidal wave, and that subsequent changes were the 'natural result of the waters seeking equilibrium. As the waters receded a decided suction or undercurrent, extremely dangerous to those in bathing, was apparent. Two bathers were carried out and drowned, and a number of others nar- rowly escaped with their lives, The seiche was well defined at Windsor Park, a suburb of Chicago, in the southern part of the city, where there is an extended stretch of beach. At this place there is.a bathing estab- Nee managed by Mr. Nichols. In speaking of the phenomenon he ~ "T have been interested in this bathing resort.for ten years. During