00772nas a2200145   4500000000100000000000100001008004100002260000900043100001900052700002100071245006600092300001200158490000700170520044900177       2004                            d  c20041 aPeter Dereliev1 aBoyan Mednikarov00aThe C4I System Concept and the Control of National Sea Spaces  a115-1250 v133 a<p>The paper analyzes an aspect of the modern control of national sea spaces and tries to characterize the ways and means it is achieved. The C4I system concept is examined as the only viable alternative for bringing efficiency into the system for control of the national sea spaces. The authors examine the major challenges faced during the development of naval C4I-systems and the experience gained by the Bulgarian maritime institutions.</p>