Page 16: of Maritime Reporter Magazine (April 1969)

OCEANIC'S 300?500W PORTABLE CARGO LIGHT OCEANIC ELECTRICAL MFG. CO.. INC Sole Manufacturers of Oceanic Electric Products 157-159 PERRY ST., NEW YORK, N.Y. 10014 ? WA 9-3321 Sub-Bottom Profiling System Developed By Edo Western An Acoustic Sub-Bottom Profiling System de-signed specifically for operation in continental shelf depths has been developed by Edo Western Corporation, Salt Lake City, Utah. The system is designed to provide high resolution sub-bottom data of the first 30-150 feet of strata. The 415 System readily lends itself to applications in off-shore mining, exploration, construction, site sur-veys or pipeline burying by providing high reso-lution data of sediment characteristics. The sys-tem can also be used to locate buried objects or pipelines. A unique transducer is utilized to provide an extremely short, high power pulse. The system operates at 3.5 or 7 kHz, and the transducer gen-erates 1-2 cycles of the signal frequency with no ringing or noticeable decay time. This short pulse is the key to the high resolution of the Model 415 System. Optimum presentation of the re-ceived data is provided by the wide dynamic range adjustable TVG (time varied gain) receiver system. The TVG control permits a low receiver gain prior to receipt of the first bottom echo, with rapid increase in gain following the bottom signal to accentuate the sub-bottom data. The starting time and rate of gain change of the TVG are adjustable by front panel controls. The received data is displayed on a precision bathymetric re-corder providing a 19-inch record with an 18-db dynamic display range. The packaging of the Model 415 System per-mits either portable operation or a permanent installation in a 19-inch equipment rack. The transducer configuration offers a choice between a hull or over-the-side mount, or a mounting in a hydrodynamically designed towed vehicle. For further information contact Edo Western Corpo-ration, 2645 South 2nd. West. Salt Lake City, Utah 84115. York Trailer Introduces Knock-About Container Van JACKSONVILLE SHIPYARDS Incorporated under the name Bawls Brothers Contractors, Inc. JACKSONVILL > * J A IRDS Contractors, Inc. OS Contractors, Inc. DS IDS UUU" w r , nihu, ,1 Broadway cmmti, he. , . New Vo« JACK_~:, v ILL ^T ^ARDS ^T ^^Brothers Contractors, JACKSONVIL( BJR )RDS Brothers Contractors, Inc. JACKSONVILLE^5T7Ti*YARDS Incorporated under the name Rawli Brotheri Contractor!, Inc. York's rugged container-bodied Dockwalloper can be sup-plied as a bolt-together assembly. For export, non-con-tainer parts are detached and packed in the body which then travels as a standard ISO container. First production models of the Dockwalloper, York Trailer's new knock-about container-bodied city-delivery van, are now being completed at York's Northallerton, England, container plant. The low-cost Dockwalloper is believed to be the first trailer van to be based on ISO container design and, as such, is an exceptionally rugged vehicle, ideal for withstanding the bangs and scrapes of alley and loading-dock maneuvering. The Dockwalloper, which comes in 20- and 30-foot lengths, is basically a steel ISO container mounted on a single axle running gear and pro-vided with landing gear, a rear bumper and a 2-foot-long tailshelf to facilitate loading-dock op-erations and curbside loading and off-loading. Normally it will be supplied ready for the road, with the noncontainer components-?tailshelf, running gear, landing gear, etc.?welded to the body. But it can be supplied as a bolt-together assembly, a feature which gives it an interesting export capability. With the non-container com-ponents stowed inside the body, the Dockwalloper becomes its own self-contained package and trav-els as a standard ISO container. Using the volume production facilities of the container factory, which is the largest and most highly-automated in Europe, accounts for the low cost of the Dockwalloper. In spite of its all-steel construction and the fact that its body is designed to satisfy the con-tainer strength specifications of the International Standards Organization, British Standards and Lloyds, the Dockwalloper is a remarkably light van. The 20-foot unit weighs only 6,500 pounds, the 30-foot only 8,200 pounds. This gives pay-loads of 9y2 tons and \Sl/2 tons, respectively. Cubic capacity of the 20- and 30-foot vans is 1,092 cubic feet and 1,657 cubic feet, respectively. The door opening is 7 feet 6 inches wide by 7 feet high. A maintenance plus of the Dockwalloper is its exceptional resistance to corrosion. Like all steel containers built at York, every steel com-ponent, before assembly, is passed through an automated pretreatment plant where the surface of the steel is converted into a non-metallic, rust inhibiting, zinc crystal skin which is then coated with phenol epoxy aluminum. After assembly, surfaces are further protected by primers ready for finish painting to customer requirements. This elaborate corrosion inhibiting is intended to pre-pare containers for deep-sea operation. Applied to a delivery van, it results in significant savings in repainting costs over the life of the trailer. As it is, to all intents, a York container on wheels, the Dockwalloper is not the prettiest of vehicles. The corrugated walls were designed for strength and lightness rather than beauty. For operators to whom appearance is important, aluminum cladding is available as an optional extra. Further information may be obtained by writing to: York Trailer Company Limited, Cor-by, Northants, England. 18 Maritime Reporter/Engineering News LISTED BY UNDERWRITERS LABORATORIES INC. LOOK FOR THE Oceanic products art manufactured to meet the require-ments of UtS.C.G. Electrical Engineer-Ing Regulations. ? Rugged Construction ? Light Weight ? Safe ? EZC Yellow Cable ? Efficient Design ? Reflector and Guard Assembly Easily Replaced ? Simple to Adapt Standard 2 Wire Systems to 3 Wire Grounded. For vessels built prior to 1952, our "Universal Ground Adapter Plate" can be purchased (25« each) and simply attached to 2-wire receptacle interior (they fit all types) and your recept-acle becomes 2-wire 3-pole grounded and will accommodate either a standard 2-wire or 3-wire watertight marine plug. WRITE FOR COMPLETE CATALOGUE ? All prices Net, less plugs. ? F.O.B. N.Y.C. ? Plugs available at addi-tional cost, specify type desired. ? Prices subject to change without notice.