ABS Nautical Systems is a provider of fleet-management software packages to the marine and offshore industries. It offers a fully integrated, modular approach to managing all the principal operational expenses associated with a vessel or offshore rig, ranging from crew payroll and purchasing to maintenance and repair. Marketed as a suite of products called ABS NS 5, the software modules are installed aboard more than 1,000 marine vessels and can function on a stand-alone basis or as a fully integrated business-management system, sharing data between different operating departments. ABS Nautical Systems has regional offices in Piraeus, Hamburg, Singapore, Kuala Lumpur, Valparaiso, and Rio de Janeiro. Its headquarters are located in Houston, Texas.