… based on latitude and longitude, the duplicates are fairly easily identified. MarineTraffic.com data is more accurate (more 1 Tapscott, Don and Anthony Williams. Wikinomics: How Mass … cause the browser to hang. For example, CAT had difficulty rendering KML from MarineTraffic.com. Also, the CAT tool currently lacks authentication functionality, thus restricting it from … management techniques. (1) Virtual machines should be explicitly labeled with an owner and contact information. Using the annotations block under the VM summary helps keep others informed. …