The study examines the maritime power of states not allied with either superpower and not dependent upon nuclear weapons for any portion of their defence. They are the Not-aligned, Not-nuclear, Naval (N-Cubed) states. A review of post 1945 naval theory is undertaken and a unique view of maritime power for N-Cubed states is presented. The changing maritime environment is detailed and the fact that conflict can be expected at any time, from violent peace to war, is established. Although land warfare is dominant, a navy's unique utility is presented. Based upon past precedents, seven naval missions are identified. An input/output model is used in examining the relationship between various 'inputs' or maritime characteristics with the 'output', naval missions and their hardware. A unique method of navy classification using technological level, size and power projection capability, is employed. Two European case studies, spanning a large technological spectrum and insuring the model is a valid tool to investigate different states, are employed. Sweden and Ireland's 'inputs' and the process by which they are transformed into specific naval missions or 'outputs' are examined. They were chosen because of their common European base but differing inputs and naval force structure. The investigation assesses their ability to meet mission commitments with an evaluation of gaps. The idea that European states can act as role models for other N-Cubed states is explored. The conclusions are that N-Cubed states are unique and require a unique theory on maritime power. The input/output model is an excellent guideline with flexibility in dealing with differing states. It suggests needs that many states are not dealing with. There exists much waste in economic, material and human resources which could be trimmed to a more cost-effective and responsive maritime defence structure.