Page 71: of Maritime Reporter Magazine (May 1994)

Astilleros Balenciaga Delivers First Of

Two-Tug Series For BP Exploration

The Cramond, first of two escort tug/Emergency Response

Vessels being built by Astilleros Balenciaga for BP Exploration.

The second tug will be the Dalmeny.

Astilleros Balenciaga, member of the Spanish private yard group Construnaves, delivered the

Cramond, the first of two twin escort tugs/Emer- gency Response Vessels (ERVs) the yard is build- ing for BP Exploration. Two azimuthal variable- pitch propellers, driven by two diesel engines generating a total power of 2 x 2,400 hp, and a 170-hp bowthruster, enable the Cramond to handle VLCCs of up to 300,000-dwt and achieve a free-running speed of 14 knots. With the forth- coming delivery of theDalmeny, the second of the series, the contract, which was won a year ago, will be complete. Currently, the yards in the

Construnaves Group are filling orders for a dozen high-seas tugs for national customers as well as owners from France, Great Britain, Greece and

Yemen.

For more information on Astilleros Balenciaga,

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Bremer Vulkan Delivers Containership

At Bremer Vulkan the second of a series of four containerships for China was named the Yuanhe and delivered to China Ocean Shipping Company (Cosco) of Peking on April 8, 1994. The 3,764-

TEU ship incorporates easy conversion of certain holds from 20- to 40-ft. containers, the transport of 45-ft. containers at certain positions on the hatch covers and the conveyance of "high-cube" containers. The main engine—a BV/Sulzer 9RTA 84C diesel developing 34,380 kW at 100 rpm and 90 percent MCR, built by Bremer Vulkan Werft und Maschinenfabrik GmbH—drives a fixed-pitch propeller, giving the vessel a service speed of 24 knots. Three 1,380 kW diesel-generator sets provide electrical power. In view of the high installed engine power, a 7/8 engine room layout proved to be the optimum solution.

For more information on Bremer Vulkan,

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May, 1994

Saab TankRadar:

A History Of Accurate Gauging

According to Saab Marine Electronics' fig- ures, its TankRadar tank level gauging system has 54 percent of the level gauging market on board tankers over 2,000-dwt (excluding Japan).

Measuring by means of radar offers several inherent advantages, according to the manufac- turer, as it is a non-contact measuring system, and all electronics are housed in boxes, com- pletely separate from the atmosphere of the tanks. Signal processing works with an uncon- ditional accuracy of 5 mm (.25 inch) or better, according to the manufacturer, regardless of range. This accuracy allows tanks to be filled faster, always under closed loading condition, and helps minimize overfilling risks.

The system is reportedly intrinsically safe, and cannot cause hazardous sparks on deck, and it can be serviced during normal operation.

TankRadar employs an extremely narrow radar beam and can be located anywhere on deck, since it detects all radar echoes via a large- diameter antenna. Advanced signal processing makes it possible to accept certain obstructions in the radar beam without influencing system performance. The sensitivity of the parabola antenna gauge is key in detecting weak radar reflections from an oil product's moving surface.

Retrofitting With Saab TankRadar

Charterers have become more concerned about quality on ships they employ, and surveyors consider level gauging a matter of concern. Also, due to growing environmental concern, higher demands from crews and new laws, there is a need for shipowners to upgrade their tonnage.

Some other reasons owners have chosen the

Saab TankRadar include: • Relatively inexpensive installation. • No moving parts inside the tank, and installa- tion is outside the tank, reportedly saving money and time. • The TankRadar's reliability reportedly makes it safe, environmentally friendly and profitable.

Saab's TankRadar complies with U.S. Coast

Guard regulations as both high alarm and cargo gauging system, can be serviced during normal operation, and Saab says it is virtually mainte- nance-free. For more information on Saab Ma- rine Electronics,

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Circle 300 on Reader Service Card 619 Industrial Road

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