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350 The Two Britannics Nearly every regular traveler across the Atlantic becomes attached to some favorite steamer on which he voyages numerous times. and which he con- stantly recommends to his friends. The White Star liner first to bear the name Britannic, launched in 1874 and employed regularly in trans-At- lantic crossings until 1899, was in the fullest sense of the term a favorite vessel and is remembered pleasantly by scores of thousands. The second steamer to bear this illustrious name is a giant ten times larger than her predecessor, and is now nearing com- pletion at Belfast. The birdseye | view reproduced here- THE MARINE REVIEW have assembled the principal parts of the plant, including a hoisting engine, cables, ropes, derricks, and timber for erection staging and falsework, have handled the first sections of steel to the site of tower No. 1, and have completed at this site a 150-foot timber tower from which to handle the steel to the 200-foot level. This erection tower has been built in the center of the site of the steel tower, equidistant from the three foot- ings, which are set in an equilateral triangle, 150 feet on the side. It has been surmounted by a stiff-legged der- rick, with a 60-foot boom, which can revolve in a complete circle and be used, without further. adjustment, for work- ing over the three columns. The steel September, 1914 tower and derrick will be dismantled and transferred to the site of tower No. 2. The contractor has not decided the method of operation above the 200-foot level, but it will probably be an adapta- tion of the gin pole; a pile or other heavy timber with a sheave on the up- per end will be rigged to the highest section of the steel column, and the next section will be hoisted into place, 'lashed, and bolted. At the 200-foot level the columns will be,.l5-inch I-beams, and the pole can be. fitted into the groove along the back. of the beam. The plan of the tower becoming con- stantly smaller as it approaches the top, where it will be only 10 feet on the side. The steel, accordingly, becomes lighter and lighter. Above the 400-foot * = = = PS Beet. 58 to THE FIRST BRITANNIC AND THE SECOND, SHOWING THEIR COMPARATIVE SIZE with is from a photo of actual mod- els of these steamers and they dem- onstrate vividly the rapid strides made during the past four decades in the fine art of ship construction. The mewer and greater Britannic, 50,C00 tons, largest of all British steamers, will enter the White Star Line's New- York-Plymouth- Cherbourg - Southamp- ton service next spring. Darien Radio Station The erection of steel in the first of the three 600-foot steel towers for the Darien radio station was begun on Thursday, July 9. The construction forces of the contractor for their erec- tion have been engaged in preliminary work since the early part of June. They will be swung into place by derrick and be secured and supported by timber falsework. When it is completed to the 150-foot level it will be selfsupporting by reason of struts and cross-bracing. The three legs batter inward, so that at the 150-foot level they will form the points of an equilateral triangle, 75 feet on the side. The faces of the concrete footings have been inclined from the horizontal sufficiently to be perpendicular to the .columns with this batter. The base girders and anchor bolts have been set in the concrete on a line with the batter of the columns. The derrick set on the 150-foot tim- ber tower will handle the steel to the 200-foot level. When the steel has been carried to the 200-foot level, the timber level the material will be so light, rela- tively, that the men will work from the inside, and the gin pole will be abandoned for a small derrick; toward the top the steel will be handled into place by hand line. About 800 tons of steel have been delivered on the Isthmus. This is ap- proximately that, for the first 200 feet of towers Nos. 1 and 2; none of the steel for tower No. 3 has been deliv- ered. The towers are identical, except that No. 3 has one short leg. A total of slightly over 960 tons of steel will be used. The contractor for the fabrication and erection is the Penn Bridge Co. of Beaver Falls, Pa. This company sublet the fabrication of all the steelwork to