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ELECTRONICS UPDATE Sperry Marine GPS Core Module And 501TR/GPS Navigator Offer Reliable, Accurate Performance —Free Literature Available— Sperry Marine Inc., Charlottes- ville, Va., is now shipping its GPS Core Module and the 501 TR/GPS Navigator to a growing number of commercial shipowners worldwide, according to Sperry project manager Bruce Angus. The GPS Core Module is a single- channel, sequenced, C/A code re- ceiver which has been designed spe- cifically for the professional marine user. Simplicity of hardware, reli- ability and availability of parts and unit ruggedness have been the de- sign criteria for the GPS Core Mod- ule—all without compromising high performance accuracy. Mr. Angus described the GPS Core Module receiver as automati- cally integrating all current and fu- ture operational satellites so that current buyers enjoy the early ad- vantage of GPS with the assurance that the receiver will be performing optimally up to and after the full deployment of GPS satellites. Addi- tionally, Sperry Marine offers a free satellite advisory software diskette to assist in predicting the interim GPS coverage on a given time and date. The new GPS equipment features two RS232 ports which provide Lat, Long and Time updates every two to three seconds with a positional accuracy of 30 meters 2dRMS. The data format is flexible to configure and complies with SC104 format (the data message for differential corrections). Other formats such as NMEA0183 are available and, in addition, the unit has very low pow- er consumption. The Sperry Marine 501TR/GPS Navigator aids mariners wishing to specify the accuracy and continuity of GPS fixes. The 501TR/GPS uses an integrated transit receiver which fills the coverage gaps that will exist up to the time when all GPS satel- lites are deployed. According to Mr. Angus, no oth- er system available offers this com- bined transit/GPS capability with a common, complete single page navi- gation display. The operator is able to quickly become familiar with the screen location of essential naviga- tion data and always knows whether the data is based on transit or GPS fixes. Mr. Angus indicated that owners of existing Sperry Marine transit receivers will be able to easily up- grade their systems during a short onboard service call to full transit/ GPS receivers. These owners would then receive the full advantage of GPS technology at a minimum cost. For free literature detailing Sper- ry Marine's GPS Core Module and 501TR/GPS Navigator, Circle 12 on Reader Service Card Sperry Marine recently introduced the 501TR/GPS Satellite Navigator and the GPS Core Module to the marine market. Increase Shown In 1987 For Shipbuilding Orders Lloyd's Maritime Information Services Ltd. recently reported in Lloyd's Register of Shipping's an- nual report that world shipbuilding orders in 1987 rose to an estimated 13.5 million gross metric tons from 12.7 million metric tons in 1986, May, 1988 reversing a three-year decline in the shipbuilding industry. Tanker orders rose substantially to an estimated 6.1 million metric tons, about one-third higher than 1986, and new construction con- tracts for general cargo/container vessels increased for the third con- secutive year to an estimated 3.4 million metric tons from just over 3 million in 1986, it was reported. Portable Gun Offers New Literature On Drilling Extremely Accurate Holes Portable Gun Drilling Systems, an engineering development compa- ny in Auburn, Wash., is offering free literature on a new application of an old method that the company has developed for drilling extremely ac- curate holes—a truly portable sys- tem. Holes can be bored to a tolerance of ± .0005" on the diameter, to .0015" on parallelism and ovality. The system meets U.S. Navy re- quirements for drilling fitted bolt holes, as on LSDs 41, 42 and 43, and has been used by a large aerospace corporation on a cargo bay fabrication project. Finished holes require no ream- ing, honing, or surface polishing. Since there is no mess—debris and drilling fluid mist are extracted by vacuum—the system can be used in an enclosed area. One operator can utilize two- three systems as required. For additional information and free literature from Portable Gun Drilling Systems, Circle 22 on Reader Service Card Norman D. Albertsen Named Manager, NCEL Technology Base Programs The Naval Civil Engineering Lab- oratory (NCEL) of Port Hueneme, Calif., recently named Norman D. Albertsen manager of technology base programs. He succeeds Jo- seph G. Berke, who was trans- ferred to the U.S. Bureau of Stan- dards in Washington, D.C. Mr. Albertson is responsible for NCEL's 30 exploratory develop- ment programs valued at $6 million, and 20 basic research projects worth $2 million. He is also in charge of internal independent research/inde- pendent exploratory development programs. A registered professional engineer in California, Mr. Albertsen is a member of the American Society of Civil Engineers, Sigma Xi honorary society, and Tau Beta Pi national engineering honorary society. There was only one improvement possible for the Hamworthy Dolphin introducing v The New Hamworthy MODULAR Dolphin Now suitable for even more applications When you've designed a centrifugal pump that is renowned for reliable, efficient operation and is fitted on thousands of ships worldwide then how do you improve it? The Hamworthy answer is to devise a new modular design that gives you a pump to suit any duty application in any ship. A pump to operate in-line or end suction, with vertical or horizontal attitude, and with options for coupling, seal, drive type and priming system. We've also added such innovative design features as lubricated bearings for prolonged dry running. With choice of single or double entry covering capacities up to 7000m3/h (heads up to 140m), you know that the one pump you need is the new Hamworthy modular Dolphin. Illllllllllll HAMWORTHY pumping systems Pumping Systems Hamworthy Engineering Limited Fleets Corner, Poole, Dorset. BH17 7LA. England. Telephone: 0202 665566. Facsimile: 0202 665444. Telex: 41348 (HAMPAC G). Circle 284 on Reader Service Card 19
