Advances in submarine tactical systems have led to an exponential increase in archived data from these systems. This data represents a significant opportunity for sailors and decision makers to gain a complete historical record of submarine tactical operations which could prove invaluable for evaluation, reconstruction and training. BKA proposes to conduct research, leveraging advances in grid computing and data warehousing technology, to develop a set of design processes that will lead to building a submarine tactical data warehouse that is scalable and will support large, multi-petabyte databases. Our research approach will focus on developing advances in data warehousing techniques and processes while attempting to leverage existing hardware investments by the Navy. The results of Phase I will be a set of design processes, validated against a test system using a small, representative subset of data, which will be applied in the construction of a prototype data warehouse in Phase II. Benefit The results of the research conducted for this SBIR will produce innovative methodologies for data warehouse development that will extend BKAs existing "Data Warehouse Method" developed and published by BKA Vice President, Tom Debevoise. We believe that there is a great need for commercial and government application of this research as organizations seek to gain benefit from access to their own corporate memory. Other users of tactical and non-tactical information such as the Navy surface and air communities would benefit from construction of similar data warehouses and we intend to market this solution to these organizations. Additionally, we believe that other agencies and corporations in the areas of engineering, intelligence, medical research, medical practice, financial markets, etc. would benefit from this technology as well and we intend to aggressively market to these sectors as well. Keywords Database, petabyte, business intelligence, Data Mining, Archive, Data Warehouse