Big Multipurpose Ship Delivered By Wartsila-Turku To USSR

Wartsila's Turku Shipyard in Finland recently delivered the 12,000-dwt oil recovery vessel/ suction dredge Vaydaghubsky to V/O Sudoimport of Moscow. The new vessel is said to be the largest of her kind in the world. In addition to her oil recovery role, she can be operated as a suction dredge in the oil fields when artificial islands are being built. Other capabilities are fire fighting and receiving bilge and sewage water from drilling platforms and other vessels.

The vessel is equipped with flexible oil booms that extend to a width of 60 meters. With the help of two tugboats, this width of coverage can be extended to 250 meters. The oil/water mixture is brought aboard using two floating skimmers.

Collecting rate is 800 cubic meters per hour, and the carrying capacity of liquid cargo is 10,000 cubic meters. The vessel is equipped with an oil/water separator with a capacity of 300 cubic meters per hour.

Dredging down to a depth of 30 meters is performed by means of two suction heads. One of the suction pipes can be lengthened with a submerged pump unit down to a working depth of 50 meters. The capacity of each pump is 13,000 cubic meters per hour. Cargo capacity for the dredging spoil is about 7,600 cubic meters, and it can be dumped into the sea through bottom hatches or pumped ashore via a pipeline.

For firefighting operations, two big water/ foam cannons are fitted on the poop deck, each with a capacity of 1,200 cubic meters per hour; these fulfill the requirements of Fire Fighting Class I. In addition, three small water/foam monitors are installed on the main deck.

The Vaydaghubsky has an overall length of 132 meters, beam of 22 meters, and depth of 8.5 meters (433 x 72.2 x 27.9 feet). Propulsion is provided by two Wartsila/Pielstick 8 PC 2 6L- 400 diesel engines with a combined output of 11,800 bhp.

The special applications of this vessel require good maneuvering capabilities. After intensive research and model tests, Wartsila decided to install two controllable-pitch propellers in steering nozzles, as well as two 670-bhp bow thrusters.

For determining position in dredging operations, the vessel has a special navigation system based on both land and underwater stations.

This system is said to provide a position accuracy of about one meter.

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Other stories from November 1986 issue


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