The lock gates at Kolkata Dock System of Syama Prasad Mookerjee port, Kolkata, separate the impounded dock system from the main stream of the river Hooghly. Even in times when the water level fluctuates due to the tides in the river, the lock Gates with an optimum draft maintain the water level in the dock area for smooth port operations. Thus the electro-hydraulically operated lock gates have a pivotal role to play for the dock operation.
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