Page 59: of Maritime Reporter Magazine (October 1994)

Kvaerner Masa-Yards, Neste Convert

Second Tanker For Arctic Traffic

Neste Shipping and Kvaerner

Masa-Yards signed a contract for the conversion of the 16,000-dwt tanker M/T Lunni for Arctic traffic.

After the conversion, the ship will start operation for Arctic Shipping

Services, a joint venture company established in Murmansk, special- izing in oil transportation. The main shareholders in the company are

Murmansk Shipping Co., Neste

Shipping and Kvaerner Masa-

Yards.

M/T Lunni will receive an 11.4-

MW azimuthing electric Azipod-pro- pulsion drive, which wil replace the existing shaft line and rudder.

Azipod is an azimuthing electric propulsion drive, developed by

Kvaerner Masa-Yards and ABB In- dustry. The Azipod unit to be in- stalled is reportedly the world's most powerful azimuthing propulsion drive built.

The conversion, which will take place in Helsinki next spring, also includes the installation of new die- sel-electric main machinery. The conversion is worth about $17 mil- lion.

Last winter the M/TUikku, owned by Nemarc Shipping Co. (established by Neste Oy and Kvaerner Masa-

Yards), was equipped with a new

Azipod propulsion drive, after which its icegoing capability and maneu- verability were reportedly improved.

For more information on

Kvaerner Masa-Yards

Circle 90 on Reader Service Card

A contract has been signed between a European cruise operator and Kvaerner Masa-Yards for th construction of a luxury cruise vessel for worldwide service. The vessel will be built at Kvaerner Mas:

Yards' Turku New Shipyard and will be delivered in June 1996. The vessel will carry 1,250 passenger and will be 656 ft. (200 m) long. The value of the contract, which includes an option for a second vesse is about $180 million.

Fried Krupp Delivers Floating Dredgers

Hopper suction dredger Aru II is one of two nearly identical vessels delivered to a state-owned Indonesian enterprise by Krupp Fordertechnik. Acutterhead suction dredger,Batang Anai, is scheduled for delivery to the same customer this fall. and reportedly offers the following advantages: short unloading time almost flat design of hopper bottom; few built-in elements in the hopper low maintenance costs; and a low load center of gravity.

A 262.5-ft. (80-m) cutterhead suction dredger called Batang Anai, was scheduled for delivery to the same customer this fall.

Other Projects

Jointly with other major shipyards in Korea, Krupp Fordertechnik has received orders for five cutting wheel suction dredgers for the Korean market in the last three years. The Liibeck-based enterprise is assuming

The two identically-designed hopper suction dredgers Bali II and Aru

II — which were delivered to state-owned enterprise PT (Persero)

Pengerukan Indonesia, Jakarta in December 1993 and December 1994, respectively — were showcased at the SMM '94 trade fair in Hamburg,

Germany.

The two vessels are to be used for maintaining existing harbors and waterways, extracting sand and dredging new port facilities. Within a consortium Krupp Fordertechnik, a unit of Fried Krupp, assumed system responsibility for the dredger vessels and supplied the entire set of engineering and dredging equipment. As consortium partner, the

Volkswerft GmbH shipyard, Stralsund, built the hulls, procured machin- ery and electrical systems according to Krupp Fordertechnik's specifica- tions, and assembled the equipment items.

Hopper Loading/Unloading System

The hoppers of both dredgers are loaded and unloaded with the same system. Loading is carried out centrally using a loading box located in the middle of the hopper. Overflows are arranged fore and aft. The advan- tages of this system are, according to Krupp Fordertechnik: good settling of the dredged material; low turbulence in the main stream of mixture; low overflow loss; quicker loading; even distribution of material in the hopper; and high cost-efficiency.

Unloading is carried out by fluidizing the soil with the assistance of pressurized water and diluting water with central discharge from above.

This reportedly produces a high mixture concentration with precise metering, optimal unloading when handling different types of soil, and a short unloading time.

Dumping of the load is effected using a small number of bottom valves technical-systems responsibility and supplying large parts of the engineer- ing and dredging components. Two of these suction dredgers with underwater cutting wheels are under construction at Hyundai Heavy

Industries (HHI), Ulsan. The cutting wheels developed by Krupp not only loosen hard, difficult materials, but also produce a highly concentrated mixture density at relatively low energy consumption. With drive ratings of 1,500 kW each, the two dredgers — to be delivered by Hyundai in

October and December 1994 — feature, according to Krupp Fordertechnik, the most powerful cutting wheels in the world. In 1994 Krupp Fordertechnik also delivered deck cranes for newbuilds at Flenderwerft AG, Liibeck,

Germany; Stocznia Szczecinska SA, Szczecin, Poland; and Thyssen

Nordseewerke GmbH, Emden, Germany.

For more information on Fried Krupp

Circle 26 on Reader Service Card

Aru 11/Bali II Specifications

Length 396.3 ft. (120.8 m) Draft 25.9 ft. (7.9 m)

Molded breadth 59 ft. (18 m) Speed 12.7 knots

Depth 33 ft. (10 m) Power 8,224 kW

Krupp Fordertechnik deck cranes are currently being assembled for containership newbuildings at

Thyssen Nordseewerke, Emden, Germany. 46 Maritime Reporter/Engineering News