The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

May, 1910 wound generator, capable of developing 75 kilowatt at 220 volts.. The electric lighting set has a capacity of 64.5 am- peres at 110 volts. There are ten elec- tric cranes, five on each side of the vessel, and each of these has a lifting capacity of 2% tons, with a speed of 75 ft. per minute. The cranes are of a special type, having their mechanism all below deck level, as seen in Fig. 3, and the post is fitted with gland end stuffing box, so that the crane room is continuously watertight. On the side of the jib is fitted the operating plat- form, which is so arranged that the craneman is able to see all the move- ments of the skip when loading and emptying the same. The two controll- ers are together and they are fitted with _one lever which is so arranged that the load follows the direction of the move- SECTION THROUGH Ne DECK BUNKER t SECTION AERO DON| OEE HOPPER fe} Mors ot OO. OOO. Or OO loro SECTION ~ DISCHARGING TRUNK | 0.0:01/ O20 OOO O70 O12 222 Fic. 3--SEcTIONAL VIEW VOLLRATH THAM. ment of the lever. The platform and arrangement of controllers are clearly seen in Fig. 5. By the operation of a lever, which is within easy reach of the crane platform, the skip, which has a carrying capacity of about 2 tons of ore, "TAE. MarRINE REVIEW 171 Fic. 4--DiscHARGE CHUTE AND OrE SKIP IN ONE OF THE DISCHARGE COMPARTMENTS. may be tipped in any position. Fig. 6 gives a view of three of the cranes on one side of the vessel and of the ore being tipped from two of the skips into lighters at Emden. These cranes have a capacity of 40 to 50 tons per hour each. On the occasion of the first voy- age of the Vollrath Tham, it is said that her cargo of 8,200 tons was dis- charged in 47 working hours by a staff of 15 men from the ship's crew, and with only five of the cranes working, the consumption of coal meanwhile be- ing 10 tons. In the design of the Voll- rath Tham regard was paid not so much to securing a reduction in the terminal time as in the reduction in the cost of labor in discharging, and, with a vessel of similar capacity, but built on the or- dinary principle, it is claimed that 120 men would have to be engaged 40 hours, and that the coal consumption would amount to about 30 tons. As the mines from which this Swedish ore is obtained are situated within the Arctic circle, and the ore is sent down to Narvik in a wet state, there is provided under each of the ore pockets in the Vollrath Tham, a special boilér and system of steam pipes for ust in the winter sea- son. The equipment of the vessel is very. complete and includes Welin's dav- its, together with Engelhardt's collaps- ible life boat, and telemotor steering Fic. 5--VoLLRATH THAM LOOKING FORWARD. ak