Bulk cargo refers to large quantities of unpackaged goods that are loaded, carried and discharged as homogeneous masses rather than individual parcels. The term covers a wide range of materials used in industry, energy and food supply chains. For a general introduction to the concept see cargo overview.

Types and common examples

Practically, bulk cargo divides into three broad categories: dry bulk (solid particulate material), liquid bulk, and gaseous bulk. Examples include:

  • Dry bulk: ores and minerals, coal (coal), grain and oilseeds, aggregates and fertilizer.
  • Liquid bulk: crude oil, refined petroleum products and vegetable oils (liquids).
  • Gaseous bulk: liquefied natural gas and liquefied petroleum gas (gases).
  • Food staples shipped in bulk include cereals such as wheat (wheat), corn and rice.

Transport, vessels and terminals

Specialized vessels and shore facilities are used to move bulk loads. Bulk carriers handle dry solids, tankers carry liquid cargoes, and gas carriers transport refrigerated or pressurized gases. Terminals use conveyors, grabs, silos, pipelines and pumps to move material between ship and shore. Loading and measurement are normally by weight or volume and adapted to the commodity.

Handling methods and storage vary: silos and bins suit cereals and powders; tanks and lagoons hold liquids; covered hatches and stable stacking manage ores and coal. Unitization (containers, pallets) contrasts with bulk movement where goods remain loose until delivered.

Safety, regulation and economic role

Bulk cargo operations are governed by international rules and best practices to prevent pollution, fire and other hazards. Notable concerns include dust explosions in coal or grain, moisture-induced liquefaction of some mineral concentrates, and the volatility of petroleum and gases. Codes and conventions, port procedures and monitoring of moisture and ventilation help mitigate risks.

Bulk cargo underpins global trade in raw materials, energy and food. Its efficient handling and transport are essential for industry and supply chains, but require specialized infrastructure and regulatory oversight to manage environmental, safety and commercial challenges.

For further technical details consult dedicated resources on bulk handling and maritime transport: more on cargo and sector guides for coal, liquids, gases and agricultural bulk commodities such as wheat.