North Sumatra has two seaports of national significance on the Strait of Malacca, and they are not variations of the same thing. Belawan is the established gateway at Medan’s doorstep. Kuala Tanjung port is the newer, deeper, purpose-built facility roughly a hundred kilometres down the coast in Batubara Regency.
The word “deepwater” sits differently on each of them, which is the first thing worth settling. This comparison covers depth and vessel capability, hinterland and catchment, cargo base and carrier density, and the question that actually matters to an operator: which gateway suits which kind of operation.
Last updated: 03 September 2026
Kuala Tanjung Port at a Glance
Kuala Tanjung port sits in Batubara Regency, on the Strait of Malacca, and was conceived as a hub rather than a regional gateway. The Kuala Tanjung Multipurpose Terminal opened its first phase in 2018, with the cruise ship SuperStar Libra arriving from Port Klang as the first vessel to dock in April of that year.
The terminal runs a main berth of roughly 500 metres with semi-automated handling, including remote-operated rail-mounted gantry cranes. Development has drawn in international partners including the Port of Rotterdam Authority, Zhejiang Provincial Seaport, and DP World, and the port is designed to integrate with the Sei Mangkei Special Economic Zone inland.
Two capacity figures circulate and they should be kept apart. The operating terminal was commissioned at a capacity in the range of 600,000 to 800,000 TEU. The figure of 60 million TEU that appears in coverage of Kuala Tanjung port is a long-horizon ambition contingent on phases that are not built. Treating the second number as current is a mistake worth avoiding.
Belawan at a Glance
Belawan, UN/LOCODE IDBLW, is Indonesia’s busiest seaport outside Java and has served Medan for over a century. Published port data gives it a maximum draft near 10.0 metres, maximum length overall around 245 metres, and roughly 30,000 DWT.
It handles palm oil, rubber, tea, coffee, forest products and containerised cargo, with an established carrier network covering the major regional and international lines. Its container throughput sits in the region of 320,000 TEU annually. Further operational detail is covered separately in this profile of the Port of Belawan.
Belawan’s defining characteristic is not its specification. It is that Medan, the largest city in Sumatra, sits directly behind it. Where Kuala Tanjung port was designed and then given a hinterland to serve, Belawan grew because the hinterland was already there.
Depth: Where the Two Genuinely Diverge
This is the comparison’s decisive line, and it is not close.
When Kuala Tanjung port was inaugurated, the Transportation Minister put its water depth at approximately 16 to 17 metres mean low water spring. Belawan’s maximum draft is around 10 metres. That is not a marginal difference; it is a different tier of port.
| Capability | Belawan | Kuala Tanjung |
|---|---|---|
| Water depth | ~10.0 m | ~16 to 17 m MLWS |
| Vessel classes served | Handysize, small container vessels | Large container vessels, Panamax and above |
| Fully laden Panamax | No | Yes |
The practical consequence appeared immediately. In December 2018 the Wan Hai 507, a vessel of 4,500 TEU capacity and 268 metres length overall, called at Kuala Tanjung. That length alone exceeds what Belawan accommodates.
Officials at the inauguration cited a routing consequence: shipping from Sumatra to Shanghai via Kuala Tanjung port taking around eight days against roughly twelve via Belawan, on the logic that a deeper port permits direct calls rather than feeder legs.
Anyone unfamiliar with how depth converts into freight cost will find the mechanics set out in this guide to what a deep sea port actually is. The short version is that depth determines vessel class, vessel class determines cost per tonne, and no operational efficiency at a shallow berth recovers that gap.
On this measure, Kuala Tanjung port is the stronger facility. Any comparison that avoids saying so is not worth reading.
Hinterland: The Factor That Decides Cargo
Depth decides what can call. Hinterland decides what wants to.
Kuala Tanjung sits in Batubara Regency, adjacent to the plantation belt and connected by design to the Sei Mangkei Special Economic Zone. Its natural cargo is palm oil, oleochemicals, and downstream commodity output from that catchment, moving in volumes that justify large-vessel economics. Its first commercial container movements were crude palm oil derivative products, which is precisely the trade it was built for.
Belawan’s catchment is Medan itself: the population centre, the manufacturing base, the distribution networks, and the established industrial estates. Its cargo mix is broader and more fragmented, which suits smaller and more frequent calls.
This is why the framing of a contest between them is partly wrong. They are around a hundred kilometres apart and draw on different economic geography. For a plantation processor near Sei Mangkei, Kuala Tanjung port is the obvious outlet. For a consumer goods manufacturer serving Medan, hauling containers a hundred kilometres to reach a deeper berth rarely pays, because the inland leg consumes the saving. The wider constraint here is that North Sumatra’s rail network does not currently link either port into an integrated freight chain, as set out in this analysis of multimodal connectivity in the province.
Kuala Tanjung Port vs Belawan, Side by Side
| Belawan | Kuala Tanjung | |
|---|---|---|
| Location | Medan Belawan | Batubara Regency |
| Distance to Medan | Adjacent | Roughly 100 km |
| Depth | ~10.0 m | ~16 to 17 m MLWS |
| Max LOA | ~245 m | Accommodates 268 m and above |
| Container capacity | ~320,000 TEU throughput | ~600,000 to 800,000 TEU commissioned |
| Automation | Conventional | Semi-automated, remote ARTG |
| Established since | Over a century | Phase 1 from 2018 |
| Carrier density | High, broad network | Building |
| Natural catchment | Medan metropolitan and industry | Plantation belt, Sei Mangkei KEK |
Which Gateway Suits Which Operation
Kuala Tanjung port suits bulk and containerised export volumes large enough to fill a big vessel, plantation and oleochemical output from its own catchment, operations near Sei Mangkei, and shippers whose economics turn on direct long-haul calls rather than feeder connections.
Belawan suits operations whose market or workforce is Medan, cargo mixes that are frequent rather than large, manufacturers importing components and distributing regionally, and anyone for whom a hundred-kilometre inland haul would erase the freight saving a deeper berth offers.
The arithmetic is worth running rather than assuming. A deeper berth lowers cost per tonne at sea; a longer inland haul raises it on land. The break-even sits at the point where annual volume is large enough that the sea-leg saving outweighs the road cost of reaching the deeper berth. High-volume single-commodity exporters usually clear that threshold. Mixed manufacturers shipping smaller, more frequent consignments usually do not.
The honest summary is that Kuala Tanjung port is the better port and Belawan is the better location for most of the province’s manufacturing base. Those two statements are not in conflict, and an operator who understands both will choose correctly. One who reads only the depth specifications will not.
Frequently Asked Questions
How deep is Kuala Tanjung port?
Coverage from its inauguration puts water depth at approximately 16 to 17 metres mean low water spring, substantially deeper than Belawan’s roughly 10 metres. That depth permits large container vessels to call directly rather than transferring cargo through feeder services.
Is Kuala Tanjung port bigger than Belawan?
By capability and commissioned capacity, yes. Belawan currently handles greater throughput and holds a denser carrier network, reflecting a century of operation and its position beside Medan. Kuala Tanjung was designed for larger vessels but is earlier in its development.
How far is Kuala Tanjung from Medan?
Kuala Tanjung sits in Batubara Regency, roughly a hundred kilometres from Medan, while Belawan is adjacent to the city. That inland distance is the central trade-off: a deeper berth reached by a longer road haul often costs more than a shallower berth nearby.
Which port should an exporter use?
It depends on cargo volume and origin. Large plantation and commodity volumes from the Sei Mangkei catchment favour Kuala Tanjung. Manufacturing and distribution based around Medan generally favour Belawan, because the inland haul consumes the freight saving from deeper water.
Are Kuala Tanjung and Belawan competitors?
Only partially. They are around a hundred kilometres apart and draw on different hinterlands, so they serve largely distinct cargo bases. Their relationship is closer to complementary specialisation than direct competition for the same shipments.
Talk to SIIPE About Site Selection
SIIPE (Sumalacca Integrated Industrial and Port Estate) is a planned integrated industrial estate and bulk port development in Medan Belawan, 4.7 km from Belawan Port. Its own port component is at the planning stage, is not operational, and is presently published at -8 to -10 m LWS, which is shallower than Kuala Tanjung and comparable to Belawan.
SIIPE’s case is therefore not a depth argument. It is a location argument: industrial plots masterplanned within 5 km of a berth, in the province’s manufacturing and population centre, in a region where rail does not currently carry freight to any port and road distance is doing that work. For operations whose economics turn on the largest vessel classes, Kuala Tanjung remains the stronger option, and any developer telling you otherwise is selling rather than advising.
Operators weighing both can review industrial land available at SIIPE or ask the team to model transit and handling costs against a specific cargo profile at info@siipe-port.com or on WhatsApp at +62 811 860 980.
