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Classification services
Ship
Classification is a mechanism by which the international shipping industry
regulates itself. Ship Classification implies development of rules
(standards) for the construction and maintenance of a ship's structure and
essential engineering system and implementation of such rules in new
building and existing ships to ensure the safety of the ships. The
classification service of IRS has been now extended to cover all types of
ships, craft and floating structures.
Classification
of New construction 
Design
Appraisal
IRS
carries out design appraisal of new buildings to ensure compliance with its
Rules and Regulations. These cover hull structures, engines, generators,
steering gears, propeller, electrical, piping and control systems, and
other major machinery components.
Survey
during construction
During
construction, IRS surveyors regularly verify the material at shipyards,
supervise welding procedures and welder's performance qualification test,
check fabrication during all stages of construction, witness destructive
tests, inspect all essential machinery during manufacturing installation on
board at the shipyard and the witness final dock trial and sea trial. IRS
surveyors also attend at various manufacturers' works to witness testing of
material for construction and inspect essential machinery and equipment at
various stages of construction. All these are done to ensure that the
approved plans are followed, approved material and components are properly
installed, good workmanship practiced and applied, and the Rules adhered
to.
Survey
After Construction
Maintenance
of the IRS Classification is assured by the system of periodic surveys to
ensure continued compliance with its Rules. These include various surveys
of hull and machinery on a Continuing basis.
Classification
of existing ships
Existing
ships, not built under IRS supervision, can also be classed with IRS only
after ensuring conformity with IRS Rules. 
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