Insight · Shipping modes · Vietnam

Bulk Container vs Breakbulk: Which One Fits Your Cargo?

A bulk container carries loose cargo poured into a box; breakbulk carries separate pieces lifted one by one. The words sound alike, the cargo could not be more different. This guide compares bulk container, liner bag, bulk carrier, breakbulk and flat rack so you pick the right mode before you book.

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Written by our operations team in Ho Chi Minh City. · Jump to the decision table

Short answer first: if your cargo flows (grain, granules, powder, beans, minerals) and you ship tens to a few hundred tonnes, a bulk container or a liner bag in a standard box is usually right. If your cargo comes in pieces that do not fit a container (steel structures, tanks, machinery), it is breakbulk or flat rack. If you ship thousands of tonnes of loose cargo at once, you are looking at a bulk carrier.

Four terms that get mixed up

How a bulk container works

A bulk container looks like a 20′ dry container from the outside. The difference is on the roof and at the door end. Loading hatches in the roof let the cargo fall in by gravity or be blown in from a silo or hopper. A small hatch low in the door end lets it run out when the box is tilted on a tipping chassis at the receiver.

Because the cargo flows, a bulk container is filled to weight, not to volume. Most heavy granular cargo reaches the box’s payload, or the road weight limit, before the box is full. Check the maximum gross weight on the container plate and the axle limits on the road leg before you agree a quantity per box.

Bulk container equipment is not available everywhere. Many carriers keep only small fleets of dedicated bulk boxes, so for a new lane the answer is often a liner bag in a standard box instead.

Liner bags: the flexible bulk container

A liner bag is a large polyethylene or woven bag fixed inside a standard 20′ dry container with straps and a bulkhead at the door end. It is loaded through a filling spout and discharged by tilting the container. After one trip the bag is removed and the container goes back into normal service.

• Pros: uses ordinary containers, so equipment is easy to find; the cargo never touches the steel walls; no cleaning certificate fight at the end.
• Cons: the bag is a cost per trip; it must be installed correctly or it tears; the receiver needs a tipping chassis or a suction system.

For shippers who move granules or beans out of Vietnam, a liner bag is usually the practical form of a bulk container shipment.

Breakbulk: when the cargo comes in pieces

Breakbulk is the opposite of a bulk container. Each piece has its own marks, weight and dimensions, and each one is lifted by the ship’s crane, a port crane or a floating crane. Pieces too long for any container, too heavy for a flat rack, or too many for one project to fit on racks usually travel this way.

Pricing is per freight ton: the higher of weight in tonnes and volume in cubic metres. Our guide what is breakbulk cargo explains the freight ton, documents and port handling in detail.

Where flat racks and open tops fit in

Between a bulk container and breakbulk sits a large group of cargo that is in pieces but still fits container equipment. Over-width or over-height machinery up to about 40–45 t often goes on a 40′ flat rack; tall items that fit the width go in an open top. Sailings are more frequent and door delivery is simpler than breakbulk. See flat rack container dimensions and the open top container guide.

Bulk container or breakbulk? Decision table

We use this table as a first filter on enquiries. The final answer depends on the route, the equipment available and the site.

What drives the cost: bulk container vs breakbulk

The two modes are priced in completely different ways, which is why comparing a quote for one with a quote for the other rarely makes sense.

For container local charges by shipping line in Vietnam, see our Vietnam local charges tables.

Bulk container and breakbulk in Vietnam: practical notes

• Container gateways: bulk container and liner bag shipments move through the main container terminals, such as Cat Lai and Cai Mep–Thi Vai in the south and Hai Phong in the north.
• Breakbulk ports: pieces often move through river and multipurpose ports such as Tan Thuan, Ben Nghe and Lotus in Ho Chi Minh City, where hook-to-truck discharge is common.
• Road weight: a full bulk container plus truck can reach the legal limit quickly. Agree the payload per box with the trucker before the vessel is booked.
• Night moves: oversize breakbulk trucks in Ho Chi Minh City usually run at night, so the site must be ready to receive.

Where we fit: we handle the breakbulk, flat rack, open top and heavy haulage side of these decisions, with our own lowbeds and a licensed customs desk. For whole shiploads of dry bulk we tell you so and point you to a bulk chartering specialist; we would rather say no than quote outside our field. See breakbulk and heavy lift in Vietnam for the services we run.

FAQ: bulk container vs breakbulk

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Last updated: October 2026 · By Tony Tuan, CEO, Project Shipping