Page 54: of Maritime Reporter Magazine (November 1995)

(Continued from page 54)

The vessel carries two Harding lifeboats, a Norsafe Magnum 750 rigid inflatable MOB craft, and eight RFD survival rafts, each with a capacity of 20. Four Norlift cranes, one dedicated to ROV activities, have also been installed.

The aft helideck (approved for

Super Puma AS 332L) is located above the research deck area, which has direct access to both wet and dry laboratories. The vessel features 69 berths in 26 cabins with accommodations for 11 crew members in single cabins.

Provisions for comfort onboard include a gymnasium and sauna, in addition to the normal dining, day room and hospital facilities.

Ritchie sets a new standard in Electronic

CompassTechnology. ..

GPS/LORAN/SATNAV

RADAR/CHART PLOTTER

AUTOPILOT

Easy Interfacing.

Ritchie's MagTronic Heading System is setting a new standard for Electronic Compass Technology.

That's because the MagTronic Sensor produces a crisp, clean signal that converts directly to digital information with accuracy and repeatability un- matched by other sensors. This sensor can also provide identical heading data for all your on-board navigation instruments. In fact, you can usually connect up to three instruments including your compass display directly to the sensor. That's

Easy Interfacing. If your electronics require several different signals all at one time, That's

Easy too. All it takes is a

MagTronic Interface Enclo- sure and simple slip-in

MagTronic Interface Modules.

Imagine, no more conflicting heading data. Your LORAN, GPS, SATNAV,

CHART/PLOTTER, RADAR and AUTOPILOT will all have the same precise heading data and

MagTronic's unmatched 1/2-of-one degree accuracy.

For more information about Ritchie Electronic

Compasses, see your favorite Marine or Electronics

Dealer or ask for your FREE Ritchie Catalog.. .it has everything you need to know about the new standard in modern Electronic Compass

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Ritchie Magnetic

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Remember, at Ritchie, Technology is never outdated...it's Standard.

RITCHIE E. S. Ritchie & Sons, Inc. 243 Oak Street, Pembroke, MA 02359

Tel: (617) 826-5131 • Fax: (617) 826-7336

As of the beginning of October,

Polar Queen was on final sea and dynamic positioning trials under the command of Peter Brandal, one of Norway's most experienced captains in arctic conditions. Upon completion of these final trials, the vessel sails for Bremerhaven in

Northern Germany to load equip- ment for the German Geomaud expedition to Queen Maud Land in

Antarctica, picking up the scien- tists, helicopters, and remaining stores in Cape Town, South Africa, which will be the vessel's tempo- rary home base. After transport- ing the shore-based research team, the vessel will also carry out sepa- rate ocean exploration projects for the BGR Hannover Group and the

Alfred Wagner Institute. This lat- ter work involves preliminary seis- mic surveys prior to an ocean drilling program.

A busy and varied first season's activity for Polar Queen appears to justify the Rieber concept. "Our intention was to build a cost-effec- tive vessel able to combine trans- port and research, thereby saving on the scientific institutions' shrinking budgets," Mr. Rong said. "Furthermore, she will be back in Europe in April 1996 ready for the North Sea peak season for bottom survey work."

London's driftwood collocflora (continued from page 55) sion, which demonstrates, even in such an outwardly simple craft, careful attention to detail and the benefit of long design experience.

One major improvement is a spe- cial control system, making it easier for the helmsman to take advantage of the enhanced maneuvering capa- bilities of the waterjet. Designed by

Hamilton U.K. in consultation with the PLA using standard proven com- ponents, the system uses the power steering pump fitted to the single 230 bhp Volvo TAMD 42WJ marine diesel to provide hydraulic power to the jet's reverse deflector (bucket).

The deflector is controlled by a heavy-duty waterproof Kobelt jog lever mounted on the console along- side a position indicator comprising 10 high intensity LEDs. Full ahead is indicated when all 10 LEDs are illu- minated — astern by a single light.

A waterjet was selected for its shallow draft advantages, but a

Borg Warner direct drive gearbox is incorporated in the system to allow backwashing of the jet should debris be drawn into the intake.

Circle 303 on Reader Service Card 56 Maritime Reporter/Engineering News