The correct answer is Kolkata port. Explanation & Key Takeaways: • Kolkata Port, officially known as the Syama Prasad Mukherjee Port, is located on the banks of the Hugli River in West Bengal, India. • The port faces a major challenge due to silt accumulation in the Hugli River, which requires frequent dredging to maintain navigability. • The problem of silt accumulation arises because the Hugli River is a distributary of the Ganges, carrying a heavy load of sediment deposited in the riverbed. • This sedimentation significantly affects the port's draft depth, leading to difficulties in handling large vessels and increasing maintenance costs. • The Kolkata Port relies on continuous dredging operations funded by the Government of India to ensure smooth functioning and to prevent disruptions in maritime trade. Related Concepts: • Kolkata Port: • Established in 1870, it is one of the oldest operating ports in India. • It serves as a crucial trade hub for the eastern and northeastern regions of India. • It has two dock systems: Kolkata Dock System (KDS) and Haldia Dock Complex (HDC). • The port primarily handles cargo such as petroleum products, iron ore, fertilizers, and containers. • Silt Accumulation in Hugli River: • The Hugli River is a tidal river, and its sediment load is influenced by the monsoon season and tides. • Silt accumulation reduces the draft depth, making it challenging for large vessels to navigate. • To combat this, the port authority conducts dredging operations to maintain a minimum draft level of 7 meters. • This issue is exacerbated by the river's complex meandering patterns and the presence of shifting sandbanks. • Comparison with Other Ports: • Kochchi Port: Located in Kerala, it is a major port on the Arabian Sea and does not face issues of silt accumulation due to its coastal location. • Tuticorin Port: Situated in Tamil Nadu, it is a deep-sea port handling large cargo vessels without challenges related to riverine siltation. • Chennai Port: Also in Tamil Nadu, it is a coastal port with a natural harbor; it does not require extensive dredging compared to Kolkata Port. • Economic Impact: • Silt accumulation increases operational costs due to regular dredging activities, impacting the port's profitability. • It limits the port's ability to handle large vessels, affecting trade efficiency and capacity. • The Government of India allocates significant funds annually to maintain navigability and ensure uninterrupted trade operations. Important Notes: • Hugli River Facts: • The Hugli River is a distributary of the Ganges River, flowing through West Bengal. • Its sedimentation is influenced by seasonal tides and upstream erosion. • The river is vital for inland trade but poses challenges for maritime navigation due to sandbank formations. • Dredging Technology: • Dredging involves removing sediment deposits to deepen waterways and maintain navigability. • Advanced dredging equipment, such as trailing suction hopper dredgers, is employed at Kolkata Port. • Continuous dredging ensures the port remains operational despite the natural sedimentation process. • Historical Significance: • Kolkata Port played a crucial role in India's colonial trade as the gateway to the Bengal region. • Post-independence, the port has remained a vital hub for exports and imports in eastern India.