A harbor is a naturally or artificially sheltered body of water that serves as a safe anchorage for maritime vessels. From a physical science and engineering perspective, establishing or maintaining a harbor involves mitigating the forces of open water, particularly strong currents, tidal variations, and wave action. Structures such as breakwaters, jetties, and seawalls are constructed to dissipate wave energy and reduce water movement within the protected basin, thereby creating a stable environment for docking and port operations. The engineering analysis must account for local bathymetry, sediment transport dynamics, and the structural integrity required to withstand constant hydrodynamic forces, making its development a significant application of civil and marine engineering principles.