LPG Logistics: Moving Propane and Butane by Sea and Land

October 5, 2026

LPG is a mixture of propane and butane that is a gas at normal conditions but becomes a liquid under moderate pressure or at low temperature. That single property allows large energy volumes to be stored and transported compactly — and it shapes every decision in the logistics chain, from the vessel we book to the terminal we nominate.

Propane, butane and the blend

Propane boils at about −42 °C and butane at about −0.5 °C. A propane/butane 50/50 mix therefore behaves differently from pure propane and is used where climate and equipment allow. The practical consequence: propane-rich cargoes suit colder destinations and colder seasons, because pure butane will not vaporise reliably in winter. Buyers should confirm the ratio against local ambient temperature before fixing a cargo.

How it moves by sea

At sea, LPG moves in three broad vessel classes:

• Fully pressurised carriers — keep the cargo liquid by pressure alone. Smaller cargoes, shorter routes, port flexibility.
• Semi-refrigerated carriers — a hybrid, partly cooled and partly pressurised. Mid-size cargoes and the most common commercial compromise.
• Fully refrigerated gas carriers — cool the cargo to hold it below atmospheric pressure. The very large gas carriers carry the biggest cargoes between export and import terminals.

Vessel class is chosen against cargo size, distance and, critically, what the receiving terminal can accept.

Terminal compatibility decides the deal

This is the step that most often catches new buyers. A terminal built for pressurised bullet tanks cannot receive a fully refrigerated cargo without appropriate equipment. Before the cargo is fixed, we confirm that the destination can actually receive it — storage type, unloading arms, metering and pressure rating. A vessel that arrives to find an incompatible terminal is an expensive lesson.

How it moves on land

On land, LPG is stored in pressurised spheres and bullet tanks or in refrigerated tanks, and distributed by road tanker, rail and, in some markets, pipeline. Bulk road delivery serves industrial and power customers; bottled LPG serves residential and small commercial users through a filling plant.

Seasonality

Demand and blend both shift with the season. Heating demand raises winter requirement and pushes the blend toward propane; summer demand leans toward butane for petrochemical and gasoline-blending uses. Planning deliveries a quarter ahead rather than a fortnight ahead usually secures better freight and better terms.

Safety and documentation

LPG is flammable and transported under pressure, so documentation is not a formality. Safety data sheets, quality and quantity certificates, bill of lading and certificate of origin accompany every shipment, and vessel selection reflects the cargo’s classification.

Plan your cargo with us

Give us the ratio, volume, destination terminal and season, and we will come back with vessel options, freight basis and lead time.