Page 26: of Maritime Reporter Magazine (January 2003)

Sea Technology

Halmatic Building World's Tallest Yacht Mast 295-ft. (89.9-m) Mast to support 2,900 sq. m. of Sail

Halmatic is manufacturing a 295-ft. (90-m) mast that will be fitted on the world's biggest sloop, currently under construction by its parent Vosper

Thornycroft Shipbuilding, part of the

VT Group. Mirabella V will be around 246 ft. (75 m) long and its mast will sup- port some 2.900 sq. m. of sail. Halmatic will use its long-standing expertise in composite manufacture to produce the hollow carbon epoxy mast, which will have a maximum cross section of 1.5 m and structural thickness of up to 32 mm.

The mast is manufactured in halves, with one comprising a complete length and the other divided into three sections.

Don't forget your

Sunglasses,

Sunscreen, and

Schedule.

With more than 320 papers being presented at

CORROSION/2003, you will need to plan your schedule early. For your convenience browse the conference pages of the NACE web site to view the da y-at-a-glance pages.

CORROSION NACExpo 2003 58th Annual Conference & Exposition ».naourg | Tel: 2B1/22S-6223 March IS-20, 2003, San Diego Convention Center

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Protecting Gears and

Shafts from Vibration

VULKAN

Flexible

Couplings

RATO Family • Mam Propulsion • EZR •

Auxiliary Propulsion • Vulastik-L • GeriSets

Vulkardan • Cardan Drives • Propflex •

Composite Shafts • Monitoring Devices •

VKE • Tortlex • Up to 464.660 Ib-tt torque

American VULKAN

Sales and Service 863-324-2424 Fx 863-324-4008 J www.vufcanusa.com • ISO 900? and QS 9000

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Ulqnn

High Performance Wiper Systems

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Are Stray Electrical Currents Destroying Your Machiner

Used on propeller shafts, thrusters, turbines, generators, electrical motors, gears, pumps & other rotating equipment. -Failure to properly ground rotating shafts can result in bearing, seal and gear damage. -Operates dry or with oil spray.

Self- cleaning. -Working parts can be removed and serviced during operation. -Brush voltage is insulated from casing, allowing voltage and cument monitoring. ©2002

SOHRE TURBOMACHINERY INC

SOHRE TURBOMACHINERY INC. 132 Gilbertville Road. P O Box 889 TEL (413)967-6908

Ware. Massachusetts. USA 01082 FAX (413) 967-5846 (800)207-2195 tsohre@sohretuibo com www.sohreturbo con

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Framework for the mold will be made from MDF cut on VT's advanced laser cutting and profiling machine. The man- ufacturing process, a similar method to that used in the production of Grand

Prix racing cars and the aerospace industry, will consist of layers of cloth pre impregnated with resin made pliable and laid on top of each other. A vacuum bag will be used to create the required pressure every few layers. Structural expertise will be provided by Hamble- based High Modulus, who are involved in composite engineering aspects for the total Mirabella project.

At regular intervals during the build the mast will be cured using a heat process with temperatures up to 70 degrees C. Carbon compression tubes will be pre-fitted to coincide with the position of each spreader. It is estimated that some five tons of cabling will be fit- ted within the hollow centre of the mast, including a mass of sensors to monitor the sail performance. Finally, the sec- tions of the mast will be glued together using an epoxy adhesive before the mast is stepped following the Mirabella V's launch in May 2003.

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Marlow to Supply

Mooring System for GOM

Marlow Ropes won a contract to design and supply polyester mooring ropes for BP's 'Mad Dog' truss Spar.

This is the first use of polyester ropes for a Spar based floating production system (FPS) and a first for a permanent moor- ing system in the Gulf of Mexico. The milestone contract is another world record for Marlow Ropes. The 'Mad

Dog' Spar, moored in 4.420 ft. water depth with an 11 line taut leg system, will employ Marlow Superline polyester ropes. With a design minimum spliced breaking strength of 4.260 kips (1,932 tons), these polyester ropes will have the highest strength ever produced for deep- water mooring. The major rope seg- ments, together with spares and test insert pieces, total nearly 84,000 ft. and will be delivered by October 2003.

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Wynn Marine Ltd. Wynn House, Lansdown Estate,

Cheltenham, GL51 8PL. United Kingdom

Tel: + 44 (0)1242 232266, Fax: + 44 (0)1242 231131, email: [email protected], website: www wynn.co.uk • Straight line window wipers • Pantograph window wipers • Pendulum window wipers • Clear view screens ssl? • Associated control systems "TOOTHBRUSH" TYPES "LW," "L" & "S" (SCHEMATIC)

CASINO WITH fl>NGE.

PERMANENTLY MOUNTED "PLUNGER" TYPE "A" (SCHEMATIC)

PLUNGER CARTRIDGE.

REMOVABLE IN SERVICE

INDICATOR

BRUSH-

RISING SCRCi

SOLDERED

IERMII441