The Kolkata Port Trust (KoPT) manages two separate dock agglomerations, the Kolkata Dock System (KDS) and the Haldia Dock Complex (HDC). These two dock systems are located on the banks of the
Hooghly River, giving the port the distinction of being India's only riverine major port.
Kolkata Dock System {{multiple image |perrow=2/2|total_width=380|caption_align=left|image_style=border:none;|background color=#F7E7CE It is situated on the left bank of the
Hooghly River at about upstream from the sea. The
pilotage station is at Gasper/ Saugor roads, 145 Kilometres to the south of the KDS (around 58 km from the sea). The system consists of Khidirpur Dock (KPD), Netaji Subhash Dock (NSD), Budge Budge River Mooring (BB), Diamond Harbor Anchorage, Sagar Anchorage and Sandheads Anchorage. This dock system mainly serves
container ships and
barges. Among the docks and moorings in the Kolkata dock system, Khidirpur dock has the lowest water depth, while the Budge Budge river mooring has the highest water depth. Apart from this, there are around 80 major
riverine jetties, and many minor jetties, and a large number of ship breaking berths. Vessels to enter Khidirpur Dock (KPD) and Netaji Subhash Dock (NSD) of the Kolkata Dock System first wait for tides at the anchorage at Nazirganj Flats, north of
Garden Reach. 5 ships can be anchored together in this anchorage. When the water level of the river reaches the level of the Kolkata Dock System (KDS) water level due to tidal action, the ships waiting at the anchorage enter Khidirpur Dock (KPD) and Netaji Subhash Dock (NSD) through lock-gates.
Kidderpore Dock (KPD) Kidderpore Dock has a total of 18 berths, including 17 multipurpose berths and 1 berth for passenger ships including cargo; 6
Buoys /
Moorings and 3
Dry Docks. Berths are identified by numbers, which can range from 1 to 29. The berths have uneven water depth, with a minimum of 7.4 metres (24 ft) at berth No. 29 and a maximum of 9.2 metres (30 ft) at berth No. 8. Kidderpore Dock is divided into two parts, which are KDP-1 (West) and KDP-2 (East). Out of total 18 berths, KDP-1 consists of 10 berths and KDP-2 consists of 8 berths. These two parts – KDP-1 and KDP-2 – are separated by a
bascule bridge. The dock's quays have a combined length of 2,956 meters (9,698 ft), of which KDP-1 (West) is 1,728 meters (5,669 ft) and KDP-2 (East) is 1,228 meters (4,029 feet). The dock is connected to the shipping channel –
Hooghly River, through a
lock gate. A section of the dock between the lock gate and KDP-1 is the "tidal basin"; dry docks are connected to this basin. Ships enter the dock through a lock gate. The lock barrel is 176.8 metres (580 ft) long and 24.4 m (80 ft) wide. The depth in front of the lock gate is about to . Accordingly, vessels with a maximum length of 157 meters (515 feet) and a maximum width of 21.35 meters (70 feet) are able to enter the dock. Buoys/moorings installed within the docks provide support to the movement of ships. Kidderpore Dock has several bends, and no night
navigation; as a result the ships operate only during the day. Berths are identified by numbers, which can range from 2 to 13. The berths (impounded dock) have uneven water depth, with a minimum of 10 meters (33 ft) in berths No. 2 and No. 10, and a maximum of 12.5 meters (41 ft) in berths other than No. 2 and No. 10. The dock is connected to the Hooghly River, the shipping channel, through a
lock-gate. The jetties on the
Hooghly River mainly transport liquid products —
crude oil, POL products,
naphtha,
liquefied petroleum gas (LPG) and edible oil. These jetties are known as Haldia Oil Jetty, and are identified by
Roman numerals. The water depth is 10 m (33 ft) at the first (HOJ-I) and second (HOJ-II) oil jetties, and 12.5 m (41 ft) at the third (HOJ-III) oil jetty. Recently, a fourth oil jetty, known as Outer Terminal 2, has been constructed between the Dock's Approach Jetty and the Second Oil Jetty (HOJ-II); the water depth at the jetty is 9 m (30 ft). Outer Terminal 1 (OT-1) is located upstream of the third oil jetty (HOJ-III) for the transportation of dry bulk cargo; the jetty has a water depth of 8.5 meters (28 ft) and is capable of anchoring vessels up to in draft. Haldia Anchorage is used for
lash vessels.
Dry Dock KoPT has the largest
dry dock facility in India. These dry docks cater to the diverse repair and maintenance needs of the vessels calling on the Eastern Ports of India. In addition, shipbuilding facilities are also available in these dry docks. All the dry docks are inside the impounded dock system. There are five dry docks of which three are in Kidderpore Dock and two are in Netaji Subhas Dock. There is a fully-fledged repair workshop including Diesel Engine Overhauling Unit, Structural Shop, Heavy and Light Machine Shop, Forging Shop, Electrical Shop and a Chain Testing/Repair Shop with 2500 KN capacity Tensile Compression Testing Machine to support various activities in the dry dock. Electric Level Luffing
Cranes of 5 tonne and 7 tonne capacities are used at Dry Dock No. 1 and No. 2 of Kiddirpore Dock respectively, operating area radius of which area 20 m (66 ft) and 25.42 m (83.4 ft) respectively. 4 cranes are used at Netaji Subhash Dock, which includes 1 Electric Level Luffing Crane and 3 Electric Cranes. The Electric Level Luffing Crane has a capacity of 25 tons and a operating area radius of 15.25 m (50.0 ft); on the other hand, 2 of the electric cranes have a capacity of 3 and 6 tons and the other is of 3 ton capacity. == Port channel ==