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itors position and anchor lines and has computer-assisted thruster con- trol. She can reach speeds of 11 knots.

The firefighting capacity of the

DB 50 consists of four fire monitors located on the main crane mast.

Each monitor is capable of sending a 7,900 gpm stream of seawater to a point 500 feet away to a maximum height of 230 feet. The ability to provide such a great volume of water, coupled with the mobility supplied by the dynamic positioning system, allows the DB 50 to furnish excellent firefighting capability to the Gulf of Mexico.

For pile driving, the vessel is out- fitted with a Johnston 2,000-hp die- sel-fired boiler capable of producing 69,000-pounds of steam an hour at 250 psi. The boiler capacity is suffi- cient to operate the largest pile driv- ing hammers in use, including the

Vulcan 6300.

Living quarters on DB 50 are equipped to accommodate 237 people. All quarters are centrally heated and air conditioned.

Lounges, cinema, game rooms and gymnasium are provided for off- duty personnel. One dining room, one cafeteria-style galley and com- plete laundry and hospital facilities are provided. Ample offices and a conference room are allocated for customers.

She has a deck area of 30,000 square feet and a cargo capacity of 20,000 tons.

McDermott is leasing the ship from Lombard Initial Leasing Ltd., which purchased the vessel from

British Shipbuilders.

MICOPERI 7000

Fincantieri-CNI

Fincantieri Cantieri Navali Ital- iani SpA's Montefalcone shipyard in Trieste, Italy, achieved an impor- tant milestone when it delivered re- portedly the world's largest semi- submersible crane vessel, the Mico- peri 7000, to her owners Micoperi

SpA of Milan.

The Micoperi 7000 has two hulls, each with a length of 541 feet and a beam of 108 feet, supporting a 574 by 285-foot platform. From her line of construction, she has a freshwater docking draft of 32 feet, a transit draft of 34.4 feet, an operational light load draft of 65.6 feet, and an operational maximum heavy load draft of 94.1 feet.

The self-propelled barge's pro- pulsion and electrical needs are sup- plied by a total of 10 medium-speed

Grandi Motori Trieste (GMT) die- sel engines—eight 12-cylinder GMT

A420 engines and two six-cylinder

GMT A420 units. The eight 12- cylinder engines each drive an An- saldo 60Hz, lOkv alternator rated at 5,600 kw for use at sea. For port use, two 2,800 kw alternators are driven by the two GMT six-cylinder die- sels. All engines produce a total out- put of 55.62 MW or 75,570 bhp. The

Micoperi 7000 is also equipped with an emergency 1,100-kw generator driven by a GMT eight-cylinder

BL230 engine rated at 1,300 kw (1,766 bhp).

She features two bow-mounted 7,000-lifting-capacity America

Hoist swivel cranes built under li- cense by Officine Mecchaniche Reg- giane of Italy.

Dynamic positioning and maneu- vering is provided eight azimuth thrusters with fixed blades and pro- peller nozzle and two transverse tunnel thrusters with fixed blades placed in the forward area. Propul- sion is ensured by the use of four non-retractable fixed-blade azimu- thal propellers arranged astern.

The Micoperi 7000 can accommo- date a crew of 800 in five suites with dayrooms, 35 single berth, 335 dou- ble berth and 30 triple berth cabins.

She has two dining rooms, a swim- (continued)

MICOPERI 7000

Equipment List

Main engines (10) GMT

Alternators Ansaldo

Azimuth thrusters Schottel/Lips

Revolving cranes American Hoist

Winches Pusne

Electric system, automation, dynamic positioning Ansaldo

Steel cables Scanrope

Anchors & chains . . Cadenas y Forjados

Purifiers Alfa Laval

Volumetric fuel meter ITT

Butterfly valves Vanessa

A/C Aerimpianti

Remote level gages & remote valve controls . . .Navalimpianti

Diving system Dras

Pumps Termomeccanica Italiani

Ventilation Limol

Trendsetting Technology.

RENKTACKE Marine Gears.

Step-up gear with power turbine

RENKTACKE "RCF" gear fitted to a diesel engine (MAN B&W)

On-board current gener- ation by "RCF" Super- imposed Gear System

The RENKTACKE "RCF"-type system has been developed jointly with MAN B&W.

Operating as single equipment or in conjuction with a povtfer turbine, this system utilizes the most favourable operating conditions offered by the main engine to generate current aboard ships.

The electronic "Controller" opti- mizes the interaction of engine, gear and generator. Further on- board generators can be con- nected in parallel.

The low-cost and reliable on- board energy supply provided by the RENKTACKE "RCF" gear system has proved its merits in a wide range of vessels.

RENKTACKE delivers the com- plete PTO/PTI system.

RENKTACKE GmbH • RO.Box • D-8900 Augsburg • Telephone 0821/5700-0 • Telex 53781

Telefax 0821/5700-460

Circle 196 on Reader Service Card

RENKTACKE "RCF" gear

December, 1988 19