wiredinUSA July 2015

INDEX

Optic fiber sees increases

salvaged a motor from the Saturn V rocket motor that powered Apollo 11. The motor was at a depth of 4,600m and was retrieved using a 44mm DynIce Warp synthetic rope manufactured by Hampidjan Baltic in Lithuania. Seabed Worker is specially designed for salvage operations at extreme depths. Among the ship's other achievements, it has been used to salvage 1,400 tons of copper from a sunken ship at a depth of 3,200m and 48 tons of silver from a wreck at 4,200m. Hampidjan has twice supplied Seabed Worker with DynIce ropes. Originally the ship was supplied with a 4,200m length, which was twice lengthened to bring it up to 5,200m, and the most recent delivery was 6,300m long and 44mm in diameter, with breaking strength of 142 tonnes.

Between January and April 2015, Chinese optical communication companies have produced 103 million kilometers of optical cables, an increase of 15.25 percent year-on-year according to data from a Chinese institution of industry research. Thedata shows that the optical cable output from Jiangsu Province ranks first, with a 46.8 percent share of the national total output. Jiangsu Province’s optical cable production reached 48.2643 million core kilometers, an increase of 13.53 percent year-on-year. Hubei Province has produced the second largest optical cable output, with 17.6539 million core kilometers and a year-on-year increase of 22.27 percent, accounting for approximately 17.13% percent of the total amount. Optical cable output from Chongqing experienced the biggest increase compared with the previous year. In 2013, Chongqing SDGI Optical Fiber Cable Co Ltd invested in Fuling New District, to achieve its target of producing 2 million core kilometers of optical cables per year. It brought new capacity for optical cable production in Chongqing, and a total of 863,700 core kilometers optical cables have been produced in the first four months, an increase of 3,921.84 percent year-on-year.

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S S Back to the surface…the Seabed Worker was able to retrieve a motor from the Saturn V rocket that powered Apollo 11

Steel wire rope at these depths would be unable to support its own weight over these extreme lengths. The rope on Seabed Worker weighs 8.6 tons, compared to the 62 tons that a comparable length of steel wire rope would weigh.

Ropes going further

In March this year the crew of Seabed Worker , a Norwegian deep retrieval vessel,

wiredInUSA - July 2015

wiredInUSA - July 2015

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