During a container ship port call, vessels dock at a designated berth, discharge import containers, load export containers, refuel, complete customs formalities, and depart for the next port. A typical port call ranges from 12 hours to 3 days depending on cargo volume, port efficiency, and vessel size.
Pre-Arrival Procedures
Before the vessel arrives, the shipping line agent submits a Notice of Readiness (NOR) and advance cargo manifest to port authorities. The ship’s estimated time of arrival (ETA) is communicated 24–72 hours in advance via AIS (Automatic Identification System) and direct notification. Port health, customs, and immigration authorities are pre-notified. The terminal operator publishes a berth window and deploys cranes and stevedore gangs accordingly.
Docking and Securing
As the vessel approaches the port entrance, a trained marine pilot boards the ship via pilot ladder to guide it safely to the assigned berth. Tugboats assist with precise maneuvering. Once alongside the quay wall, the vessel is secured with mooring lines fore and aft. Shore gang connects gangway, electrical power, and communications. Only after safety clearance has been given do cargo operations begin.
Container Discharge Operations
Ship-to-shore (STS) gantry cranes — among the largest mobile machines on earth — lift containers from the vessel’s holds and deck stacks one by one, placing them on automated guided vehicles (AGVs), terminal tractors, or straddle carriers. These move containers to the container yard where rubber-tyred gantry (RTG) cranes stack them in rows. A high-performance terminal can discharge 2,500–4,000 containers per crane per day. The sequence of discharge follows the bay plan prepared by the stowage planner.
Customs and Documentation
While cargo operations proceed, customs officers process the vessel manifest and assign risk channels to individual containers. In India, importers submit Bills of Entry through ICEGATE 30 days before arrival. Containers assigned to physical inspection are flagged and segregated for examination before release. Customs clearance and duty payment are processed electronically in parallel with physical discharge operations.
Container Loading Operations
After or simultaneously with discharge, export containers from the terminal yard are moved to the berth and lifted onto designated positions on the vessel in strict accordance with the pre-planned stowage plan. The sequence ensures port rotation (next port’s containers go on top), vessel stability, and proper stacking of heavy and light boxes. Dangerous goods are loaded last and positioned on deck per IMDG regulations.
Vessel Services and Maintenance
While in port, the vessel takes on bunker fuel (often delivered by dedicated bunker barges), fresh water, and ship stores (provisions, spare parts, lubricants). Engineers carry out maintenance tasks and rectify any technical defects. Hatch covers are inspected, cleaned, and sealed before departure. The vessel’s crew may also rotate during a port call if a crew change is scheduled.
Port Call Duration Factors
The total port call duration depends on: number of containers to discharge and load; number of cranes allocated to the vessel; port congestion and berth waiting time; weather conditions; customs examinations; and whether crew change, bunkering, or maintenance requirements extend the stay. World’s most efficient ports (Singapore, Rotterdam, Jebel Ali) turn around large vessels in 24–36 hours. At smaller regional ports, the same vessel may take 3–5 days.
Bottom Line
A container ship port call is a meticulously coordinated operation involving pilots, stevedores, customs officers, shipping agents, terminal operators, and coast guard — all working in synchrony to minimize berth time. Every minute a vessel spends in port costs thousands of dollars in port fees and lost revenue. When you track your shipment on TraceContainer.com, events like “Vessel Arrived,” “Discharge Commenced,” and “Container Gated Out” all reflect milestones in this port call sequence.