For the cost effective and safe operation of ships and other marine assets it is mandatory to develop a software tool solution, which help with in timely maintenance and is priority based to avoid both financial losses and operational downtime. The idea is to propose a combined system for both planned Maintenance and decision matrix. Hence, the aim of this paper is to focus on combining a decision tool matrix with a Planned Maintenance System in order to provide clients with a total solution and incorporate client's requirements for Maintenance and Spares Inventory system. An earlier research study paper discussed how the Decision Matrix act as a tool developed to show how it can be a useful option for real Marine and offshore assets and their locations. In the earlier research paper, the Decision Tool software explained various options, for example: (Various types of floating ships such as Windfarm, Seafarms, Hydrogen plant etc.) and how to install and operate safely and cost effectively at various sea locations against a variety of important categories such as existing structure, location, regulations, Liabilities, Environment, Societal, conversion operations and New Assets.