Page 21: of Maritime Reporter Magazine (November 1992)

Strong, reliable, enduring,?

STEEL-SPRING FLEXIBLE COUPLINGS

Aqua Signal Names Baass

Executive Vice President

Aqua Signal Corporation, Batavia,

El., has appointed Gerhard M. Baass as executive vice president to man- age its marine lights business in North

America.

Mr. Baass was executive vice presi- dent of ZF of North America, Inc. for 10 years. ZF is a major supplier of marine transmissions and automo- tive drive train components.

Aqua Signal is one of the world's leading suppliers of ship lighting sys- tems including navigation lights, search lights, interior and exterior lighting for commercial vessels, mo- tor boats and yachts, naval ships and offshore platforms.

The main production facility is in

Bremen, Germany.

For detailed information on Aqua

Signals lighting products,

Circle 32 on Reader Service Card

High Seas Maritime

Services Opens

In Houston, Texas

The president of High Seas Mari- time Services, Jim P. Stevens, has announced the company's grand opening in Houston, Texas.

High Seas Maritime Services deals with brokerage and chartering, heavy lift transportation, ocean towage and worldwide ship delivery.

The company's address is P.O. Box 842275, Houston, Texas 77284-2275; tel: (713) 859-8242; fax: (713) 463-7842.

For more information,

Circle 33 on Reader Service Card

MARKISCHES WERK HALVER

Circle 228 on Reader Service Card

November, 1992 23

Circle 276 on Reader Service Card

LO-REZ helical steel-spring couplings, with their low, constant and accurately-controlled torsional stiffness factors, provide excellent torsional characteristics for geared marine reciprocating propulsion systems, engine and reciprocating compressor drives of many vari- eties, locomotive drives, etc.

LO-REZ was one of the first coupling manu- facturers, 40 years ago, to recognize the im- portance of torsionally-soft couplings in power transmission systems, particularly in reciprocating, variable speed systems and those involving gearing.

HF (HUB-FLANGE) ARRANGEMENT

VISCOUS TORSIONAL

VIBRATION DAMPERS 156 WEST 8'" AVE.-, VANCOUVER, B.C., CANADA V5Y 1N2 • TEL. (604) 879-2974 • FAX (604) 879-6588

MWH COMPLETE VALVES - BASIS

FOR A LONG SERVICE LIFE

STEEL-SPRING

VIBRATION ISOLATORS

BR4-LS

LO-REZ manufactures a broad line of sturdy steel-spring vib- ration isolators. The BR series isolators (shown here) with their ample thrust capacity and rubber-cushioned, adjust- able stops (to limit excess ver- tical excursion) are widely used for marine auxiliary, other mobile and seismic applications. No external chocks are required. BR-T series isolators have spe- cial spring-loaded thrust housings to carry the full propellor thrust effects, the full engine torque, and still provide excellent isolation. They are ideal isolation supports, also, for machinery rafts in ships.

With the growing demand for acoustical and vibration attenuation treatment in ships, the isolation of main propulsion engines is fast becoming a necessity rather than a luxury. LO-REZ has many years of experience in analyzing the dynamics of soft-mounted propulsion engines, and has the products to provide integrated iso- lation systems which include two-directional thrust-type RT flexible couplings for the gear output shaft.

Designed & Manufactured by

LO-REZ VIBRATION CONTROL LTD.

Don't do things by halves.

Use the MWH combination of

Nimonic valve, water-cooled cages or seats and Turnomat® valve rotator.

The advantages: • • all components from one supplier total compatibility of valve lj and valve seat angle quick exchange of valves, short down time longer service life due to the optimal k combination of j

I,, components. A

Markisehes Werk GmbH • P.O.Box 1442 • D-5884 Halver

Phone (2353) 72274 • Telex 8263649 mwhd • Telefax (2353) 72255

LO-REZ manufactures both the conventional un- tuned viscous dampers and its new patented mechanically-tuned viscous dampers. Extensive research has shown that the single and compound tuning methods, as developed by LO-REZ, reduce resonant amplitudes by some 40% and 60%, res- pectively, of the untuned values.

Aluminum alloy ribbed housings of robust design provide cooler operation with less variance be- tween cold and hot performance. Dampers are bolted construction and are serviceable with facto- ry rebuild program. LO-REZ forced-damped com- puter program handles very large and complex power trains and provides for optimization of damper size and characteristics. Standard damper sizes are available as well as custom-engineered models.