How a Cargo Ship Delivers 15,200 Tons of Potash to Gresik, Indonesia

When a cargo ship arrives at an Indonesian port, there is much more happening than simply loading or unloading cargo. A single port visit involves the vessel, port authorities, terminal operators, cargo teams, surveyors, tugboats, pilots, and shipping agents working together.

A recent example was MV SJ Colombo, which arrived at BMS Gresik, Indonesia, on 11 August 2026 to unload 15,200 metric tons of Pink Standard Muriate of Potash. TMA Group supported the vessel throughout its port visit, from arrival and berthing to cargo discharge, husbandry assistance, and departure.

This operation provides a useful look at how a cargo ship's port visit works and why local maritime and logistics coordination is important.

What Was MV SJ Colombo Carrying?

MV SJ Colombo arrived in Gresik carrying 15,200 metric tons of Pink Standard Muriate of Potash, commonly known as MOP.

Muriate of Potash is a potassium-based fertilizer used in agriculture. The cargo had been loaded in St. Petersburg and was transported by sea to Indonesia for discharge at BMS Gresik.

But getting cargo from one country to another requires much more than the sea voyage itself.

Step 1: Preparing for the Ship's Arrival

Before a ship reaches port, preparations are already underway.

A shipping agent acts as an important local point of contact between the vessel, port authorities, terminal operators, cargo interests, and other parties involved in the port visit.

For MV SJ Colombo, TMA Group coordinated with the vessel and relevant parties before arrival to confirm port requirements, berthing arrangements, documentation, and other operational preparations.

This advance coordination helps ensure that the vessel can proceed through the required port procedures when it arrives.

Step 2: The Ship Arrives at Gresik

MV SJ Colombo arrived at BMS Gresik on 11 August 2026.

Once the vessel reached the port area, a pilot boarded the ship. A port pilot is a maritime professional who helps guide large vessels safely through local waters and into port because they have detailed knowledge of the area's navigation conditions.

The vessel then proceeded to its assigned berth at BMS Gresik.

The first mooring line was secured at 14:18, and the vessel was fully secured alongside the berth at 14:48.

In shipping, this is an important milestone because the vessel must be safely secured before cargo operations can begin.

Step 3: Completing Port Formalities

After the ship was safely secured, the gangway was lowered and the relevant personnel boarded the vessel.

TMA Group's agent coordinated with the master and crew to ensure that the required documents and port formalities were properly handled. Representatives from the relevant authorities and a surveyor also attended the vessel.

A surveyor is an independent professional who checks and measures aspects of the vessel or cargo operation. In this case, a draft survey was conducted to help determine the quantity of cargo involved.

These procedures may seem like small administrative steps, but they are an important part of ensuring that cargo operations can proceed properly.

Step 4: Unloading 15,200 Tons of Fertilizer

Once the required preparations were completed, the main operation could begin: unloading the fertilizer from the ship.

MV SJ Colombo discharged its full cargo of 15,200 MT of Pink Standard Muriate of Potash at BMS Gresik.

Cargo discharge requires coordination between several parties. The vessel's crew, terminal personnel, cargo interests, surveyors, and shipping agent need to communicate throughout the operation.

The shipping agent helps coordinate the local parties and ensures that information, documentation, and operational requirements are communicated between the vessel and the relevant stakeholders.

The cargo discharge was completed at 06:30 on 14 August 2026.

Step 5: Checking the Cargo and Completing Documentation

After the cargo was unloaded, another draft survey was conducted between 06:30 and 08:00.

The purpose was to help verify the vessel's condition and cargo quantity after discharge.

The necessary documents were then completed and signed on board.

This illustrates an important part of maritime logistics: the physical movement of cargo and the documentation supporting that movement must progress together.

Step 6: Supporting the Vessel Before Departure

TMA Group also provided husbandry assistance during the vessel's stay.

In simple terms, vessel husbandry refers to the additional support a ship may need while it is in port. These services can help the ship's owner, operator, or crew deal with local operational requirements.

For MV SJ Colombo, the support included superintendent assistance and Cash to Master (CTM) service.

Cash to Master is a service in which funds are delivered to the vessel's master for approved onboard operational requirements.

These types of services are part of the wider support needed to keep a vessel operational while it is visiting a foreign port.

Step 7: The Ship Leaves Gresik

After cargo discharge and documentation were completed, preparations began for the vessel's departure.

A pilot returned to the vessel at 11:40 on 14 August, while additional tug assistance was arranged to support the departure maneuver.

The vessel was clear of its mooring lines at 12:18, cast off at 12:20, and departed Gresik at 12:35.

Its next destination was Singapore, with an estimated arrival of 17 August 2026 at 14:00 local time.

From arrival to departure, the port call took several days and involved many different people and activities behind the scenes.

Why Local Coordination Matters

A vessel's port visit is a coordinated operation involving much more than the ship itself.

For a cargo ship arriving in Indonesia, local teams may need to coordinate:

• Port and terminal operations
• Vessel arrival and departure
• Port authorities and required clearances
• Cargo loading and unloading
• Surveys and inspections
• Documentation
• Tug and pilot arrangements
• Crew and vessel support
• Local suppliers and service providers
• Inland transportation and logistics

Every port can also have different infrastructure, procedures, regulations, and operational conditions.

This is why local knowledge and reliable coordination are important in shipping and maritime logistics.

MV SJ Colombo Port Call at a Glance

More Than Moving Cargo

The movement of cargo does not begin when a ship reaches the port, nor does it end when the cargo leaves the vessel.

Behind every successful port call is a network of people coordinating vessels, terminals, authorities, cargo operations, documentation, and local services.

TMA Group provides shipping agency, maritime, port, and logistics services across Indonesia, helping vessel owners, operators, charterers, and cargo interests coordinate their operations at Indonesian ports.