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MARINE Description of the New Lake Light-Ships. Commander George W. Coffin, naval secretary of the light- house board, says of the new lake light-ships: 'The inspectors of the three lake light-house disctricts, under date of Oct. 28, presented a joint report, relating to the several appropriations made at the last congress for light-vessels, etc., for the great lakes, which joint report was considered at the board meeting of Nov. 7, and in general terms approved. The details of the carrying out of the scheme it was thought advisable to consider further. The officers named stated that three vessels of moder- ate size, about 80 feet long, 20 or 22 feet beam, with about 8 feet depth of hold, were urgently needed in Green bay. They rec- ommended that one vessel be stationed to cover Eleven-Foot and Corona shoals; one at or near Gravelly island shoal, Poverty island passage, and one at the end of Peshtigo shoal, southerly end of Green bay. They stated that in their judgment four vessels could be built and equipped suitably for use as light- ships from the appropriation of $60,000, and they recommended that the fourth vessel be stationed at the lower end of Lake Huron, near Corsica and Northwest shoals, or near Poe's reef, upper end of Lake Huron, but preferably near Corsica shoal. '"The board has now these vessels in design, practically on the lines recommended by the above officers. She plans and specifications are being executed with all despatch. Just when it is intended to have these new aids in operation, it is impossible at present to say, but the board will use every endeavor to get them completed and placed at the earliest practical moment. _ "The vessels will be provided with one group of three lens lanterns on one mast, similar to those now on the light-ships at Gray's reef, Simmon's reef and White shoal. The vessels will be equipped with boilers and a fog signal engine, capable of sounding a 10-inch whistle. The quarters for the keepers will be built on deck as being more healthy and convenient. Two anchors and chains for each vessel will be provided, and a 10,000-pound sinker for a permanent mooring. The lights will be hoisted and lowered by a hand weight. Each vessel will be: provided with a geared capstan windlass, hand power, ard the boats will be a yawl and one light Mackinaw built boat." Big Steamers Running Light in the Ore Trade. In the transportation of iron ore from I'wo Harbors, Minn., the best class of lake freight steamers are engaged throughout the season, and it is interesting to note that the average tonnage of 623 cargoes of ore leaving that port during the season just closed is 1,855 gross tons. 'This average, which would be even _ greater but for the limited draft in the St. Mary's Falls canal, is _ certainly very high when the total number of cargoes is taken into consideration. Although the movement of ore from Esca- naba is not as large as from Ashland, the shipments this Season aggregate 1,155,490 gross tons, or 299,989 tons in excess of the movement during any previous season. Of the total ship- ments, 436,787 tons went to South Chicago. In a single day, July 9, 17,000 tons of ore was loaded at this port, and the aver- age time of loading and trimming all vessels throughout the ' Season was about three hours. 'The largest cargo of the season and the greatest ever taken from Lake Superior was 3,220 gross tons, carried by the Minnesota line steamer Maritana. The high average of cargoes and wonderful dispatch at Two Harbors is due to the fact that the great bulk of shipments is in the steel _ boats of the Minnesota line and other big steamers, running : without consorts and in most cases without cargoes on up trips. CLEVELAND, OHIO, THURSDAY, DECEMBER 1, 1899. REVIEW. No. 22. Report of Engineer's Trial, Steamer Pioneer. The trial was made for the purpose of ascertaining the maximum power that could be easily maintained for continuous trips and the results of the Howden forced draught system, with which this ship was fitted. No attempt was made to force the machinery beyond this point. The trial was made Sept. 19, 1892, on Lake Erie, from Bar point light to Buffalo breakwater, a distance of 230 miles. Indicator cards were taken every two hours; also read- ings from the gauges showing air pressure in ash pit, boiler pressure, vacuum and revolutions. The fan was kept as nearly as possible at a uniform speed of 400 revolutions per minute. The temperature of chimney was taken every four hours by a pyrometer, at a point of about 19 feet above the tubes, which was the only accessible place. The only means of ascertaining the amount of coal used was to measure the amount left in bunkers at the end of 'the trial and deduct this from the amount on board at the commencement of the tri al so that results given are only approximate. VESSEN. hengtitoversall ints ta een. eee Ae eee 2417 Lengthy keel: ssasnsici austin aiyecmeaeenie eranccees cha ee 225/ Bread thc. cctre oaher ere a orrscet eh eee Gre On eee hei ODL Des Weep tlt: isgatie meta. ews cane Sones see ee eae eT eee 1746 Meanadriiitvatatnial ees ac. eee: eee eee 147 8/7 Displacemenianirial=nettons: 2,-0.6 ee 2,685 Cargovand@inely niet tonstes,..12+tstime see Te 1,810 ENGINE. Cylinders diameter, inches.....................--«- Saale eR ea ta 207733// and 54/7 CHM ISsBULO KOs. ssoass sa tacncaqs. ea caedee sienna eee Zee . Propeller diameterc-cac ste ee ee 127 6/7 Propeller sputche..| Hes errss: ee ieee ee gees At OE/, BOILERS.--Fitted with Howden's system of forced draft. Number...... wiala siteieinc aed edna etpe loner cx bigs Peace Rahm: Re 2 Di AMO ety Pinks e te tuns ates sae woeere ok nee pee ew ee 12 Wengthicy. svecscem- ous attes apnea ie-eteceedcaik (ome rank Sa eee LAG Numberof furmacess totalesc eee ee 4 Diameter oh turnaces:is. Se aietieel eds eee. Oe ea Grate surface; squaresteet, totdlc.c...05- 0006s. Seater ae 164 Heating surface jsquaneiteet: total: 11.4.0. 0... eo 6,204 INADION icnneraters coqan nc eae Caden ems ein nee A ere) caer 37.7 DiamieterOLstamtr. tcc sec ste. hee ee era ee 48/7 Aes Of dha sgulane nC Nes. nee eee eee ele tee 576 Sv. Size: OF LAN en BING. | s.c.ecs ae sne weep aceateenen a oes eee teins Te PERFORMANCE. Romer, WECESUNE WORN Saaccce esse axcocce eens eee tn gee ae 159.27 Vacuum, inches........... peSien dod saa suet nde eset acini Hee ener ee BOG Te yOlUtlON Seem a INL Ce soeegeagee a nesacee tars yee eee ae 87.90 Indicated hotsespower, Eliade. -@y lnc ac e0 7) ees 300. Imdicatedhore-power, slut. Cyl. sae Taw 386. Indicated horsepower slack: Ovln a tessat ens coe ag teas 421. HinditeHted horse: pow em etotll, vc. .deetee tees, | ee eee 1107. Distance num dium oe. trial anitltesi<.3.: eenecen eee erat 230 Running time, 17 hours and 40 minutes..................000008 Speed of vessel, miles per hour...... BL ESA cen ae ee 13.02 Slip Ors MEO pel lefseWereCCM laws canvoca ante oan heen ae aase eras ace 11.6 @oal per nour WOuld Secs ce te sre eee ee ee eee 1867.8 Coals per Hour etobta. .perungur pOUnUs-sess-ss eee 1.68 Coal, per houreper sath Ou CnNte. ...0-s seems ste cores eee 22.68 Jteating surfaces persdl.. ble Pe eisdeckt.cr a6. scereen.cme reas 2.79 Ts Ele ok pMErysOey Als OTeOT At. aatgrahosesste dak. Sook AR eta: 13.46 Air pressure in.ash pit, ms. of water....:.5...2-<--cs1sc0ss.d:- 963 Reverob tan per Miter csnceses. oteaat sre cece raeanea™ a, nearer 400 Rev OM ran Cn Gin Pere mii Meera ls eee. at oc ona coe een ges 182.8 Memmpenatunerot chimimeys Tait: a. stinececeseraay oh: woe .tes ae 575° Tenuperature of feedswater Pals); <s.ccs:ecganaereee rev ecanas 118° MAXIMUM PERFORMANCE. Boiler pressure, pounds................... RS eect Gaheak eae aeoeeeee 165 Wd C UNIT INCH OBEN crac twcns setccashase -o hos omen eden cake node onaaeee 21.5 Revolitions per minwtent ss caetest ones bem tiee ee aues cats 90 Maximum power developed, Hi. P. Cylr..........0....0..c000 Si. Maximum power developed; [nt. Cylr........:...-c:0-ssescecere 433. Maximum powerdeveloped, I. Bs Gylris io... sic tsceesasnnes 473. Maximum power developed, total...........c-cecssssseeesesseeees 1223. TSE. Peiperisq: fecOre ale SURUACC ss. sendrtaren: cetthexea.- odes 14.86 The electric light engine was running for six hours, and steering engine constantly during trial. The last may seem unimportant, but owing to slack in trick gear and tiller chains, the engine had to make a considerable number of revolutions. The Pioneer was built by the Detroit Dry Dock Company, ship and en- gine builders, Detroit, Mich. PATTERSON'S NAUTICAL DICTIONARY ($5) AND THE MARINE REVIEW ($2) BOTH TO ANY ADDRESS IN UNITED STATES OR CAN- ADA FOR $6. IF YOU ARE NOT SATISFIED WITH THE DICTIONARY THE REVIEW WILL REFUND THE MONEY. '