An urgent need of exploratory development planning and assessments is early projection of ordnance technology products' life-cycle costs and future inventory capability effects. A Model is needed of quantify projections of future inventory capability degradation. A POM+15 year projection methodology is proposed which couples ordnance life-cycle costs with historical inventory degradation concepts to enable eventual linking of rdt&e technology product life-cycle costs, inventory capability degradation, and functional performances to naval forces capability. this proposal examines the exploratory development technology arenas associated with surface-to-air missiles and torpedoes together with historical FYDP/POM development/acquisitions budget costs for projecting potential life-cycle costs of future configurations. Concurrent with that cost effort, regression analysis inventory capability degradation projections for surface-toair missiles and/or torpedoes will be generated. one or more sample surface-to-air missile/torpedo ordnance families will then be processed through the model affordabilities/degradation/utility system architecture to demonstrate model feasibility and potential usefulness at the exploratory development rdt&e level.