CM is divided into seven main categories i.e. Hull structure, Propulsion, Power Generation & Distribution, NAVAID & Communication, Auxiliaries, Outfitting & Furnishings and Armament. Complete As-built configuration of the boats were configured following the above categories in compliance with MIL-STD-973, MIL-HDBK-61A and SAE EIA 649-C. The Configuration Identifiers (ESWBS, Extended Ship Work Breakdown Structure) were in accordance with NAVSEA S9040-AA-IDX-010/SWBS 5D Volume I & II.