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the buyer's local areas as opposed to the 6-10 charts on competing car- tridge systems. Owners of the Nav-

Graphic II with charts may contact

Laser Plot, Inc. of Auburn, Mass., for subscriptions to both a chart update service and for additional charts. Charts for major U.S. terri- tories and many other international areas are currently available.

The NavGraphic II and classic 10X product lines bring to today's mariner leading edge technology in systems that are flexible, easy to use, and powerful; systems that will fill the needs of the recreational and commercial mariner as they become ready for increased capabilities and performance.

As with all Thimble marine prod- ucts, the NavGraphic II GUS-Koran is covered by the new Three-Year

Limited Warranty and Lifetime

Software Enhancement Program.

Optional charts and chart drive come under separate warranty from their respective manufacturers.

For more information and free lit- erature from Trimble Navigation,

Circle 46 on Reader Service Card

Linda S. Reese Named

Port Of Houston Authority

Administration Director

Linda S. Reese has been named director of the Port of Houston Au- thority's Administration Division, according to port executive director

James D. Pugh.

Ms. Reese replaces F. William

Colburn, who was named director of the Port Authority's new Eco- nomic Development Division. Ms.

Reese's responsibilities will in- clude overseeing the Port Authori- ty's accounting, management infor- mation services, office services, per- sonnel, safety and insurance, and purchasing departments.

New Worldscale Takes

Effect—Intertanko Offers

Informative Booklet

A new tool for tanker chartering called New Worldscale took effect on January 1, 1989, replacing the "old" Worldscale which has lasted since 1969.

No immediate rate comparisons can be made between the old World- scale and the New Worldscale.

There is no "rule of thumb" conver- sion factor between the two scales; all one can say is that a higher num- ber of New Worldscale points (com- pared with old Worldscale) are re- quired to achieve the same dollar figure.

For example, to obtain the same dollar freight for a cargo of 240,000 long tons crude oil at the current level of Worldsdcale 67 for a voyage

Ras Tanura to Rotterdam via Cape, the equivalent New Worldscale rate would be 75. Worldscale 130 for 80,000 long tons Ras Tanura to Yo- kohama equals New Worldscale 160.

However, to compare an old

April, 1989

Worldscale level with a New World- scale level would be to compare apples and oranges. What one has to compare are what the various freight levels are, translated into dollars and cents (remembering to take into account that the New

Worldscale is based on metric tons and the old one on long tons).

The ideal purpose of a scale is to provide the same net return per day (i.e., freight less bunker costs port charges, canal dues, etc.), irrespec- tive of the voyage performed. There has been a growing number of anomalies under "old" Worldscale, stressing the need for a new scale.

Fixtures are made with reference to an agreed percentage of the flat rate—the so-called New Worldscale 100. These flat rates are a set of dol- lar figures quoting the freight per metric ton for each of a very large number of possible voyages. Apart from being a useful tool for charter- ing, the Scale system provides a shorthand method for comparing market levels.

Intertanko, the International As- sociation of Independent Tanker

Owners, has recently produced a booklet describing New Worldscale.

At the same time, the publication points out several aspects of tanker chartering which are not solved by

New Worldscale.

For a copy of the booklet,

Circle 20 on Reader Service Card




High performance marine drives designed for use in the AOE-6 class fleet support ship have the largest surface hardened and preci- sion ground gear of any surface ship in the fleet. Surface hardening creates higher power density—HPD. Compared with con- ventional through hardened gears, HPD precison ground gears are lighter in weight, more reliable and produce low noise signa- tures while providing higher specific loading and greater accuracy. At 3.5 meters the

AOE-6 HPD gears have 120% more torque capability than any other surface ship in the

U.S. Navy.

The AOE-6 drive system, designed to handle four LM2500 gas turbines, features the first reversing reduction gears aboard a

U.S. Navy surface ship this size. Reversing reduction gears allow the Navy to take ad- vantage of the higher efficiency provided by fixed pitch propellers.

The design objectives of the AOE-6 drive system are consistent with the U.S. Navy's goal of improving the fleet. Future programs can take advantage of this fully developed design, particularly in regard to time and cost.

Epicyclic and parallel shaft drive systems using our high performance gears are in daily use throughout the world, above and below the ocean surfaces.

For more information about high perform- ance gears, just ask...

The Cincinnati Gear 5657 Wooster Pike

Cincinnati, Ohio 45227 513/271-7700 FAX 513/271-6793

Circle 266 on Reader Service Card


Circle 263 on Reader Service Card



SINCE 1933





Imo Industries Inc.

IMO Pump Division

P.O. Box 5020

Monroe, N.C. 28110 704-289-6511

Circle 261 on Reader Service Card 37

Lee Brass

Your Marine Connection

Lee is a maji >r supplier of products ti > the marine industry. We offer a full line of sil-brazed fittings and flanges, ball valves, threaded fittings, and brass nipples. ! '

To give you the best service available, our stocking distributors are strategically located throughout / the country and carry a full inventory of products in stock.

Lee Brass

P.O. Box 1229

Anniston, Al. 36202

Phone: (205) 831-2501

FAX: (205)831-8380

Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.