A wireless sensor network is a organization of a network with a collection of sensor nodes. Every node has some processing capabilities, such as multiple types of memory, and have a some power source, and can accommodate various sensors and actuators. Seaport areas are main points for sea towns, through which much of supplies of world are transported. Now a days, providing security is a global issue at sea-coastal areas, which is main base for communication and commercial terms, Since they are prone to possible terrorist attacks, illegitimate sea piscators, forbidden ships that have felonious intents. We use signal processing and cooperative signal processing (CSP) techniques to distinguish the ship generated waves and ocean generated waves to detect the passing Intrusion Ships (IS). In this paper we propose threearchitecture design to make easy track down of IS. The sink level detection plays an important role to improve the security and surveillance. The Cluster Head Nodes (CHN) are formed by gathering data from environmental changes and processes data to extract the features and signals are passed to surrounding nodes and also CHN has entire knowledge about the network and it can extend security by detecting multiple IS simultaneously. © Research India Publications.