Liquefied carbon dioxide (LCO ₂) transport ships are key equipment supporting the global carbon capture, utilization, and storage (CCUS) industry chain. With the advancement of carbon neutrality targets in various countries and the accelerated implementation of CCUS projects, LCO ₂ transport ships are moving from conceptual design to large-scale operation, becoming one of the most growth potential sub markets in the shipping industry.
⚙️ Technical features: Low temperature, high pressure, and multi scenario adaptation
The core technological challenge of LCO ₂ transport ships lies in the unique physical properties of carbon dioxide. CO ₂ cannot exist in liquid form at atmospheric pressure, with a triple point of 5.12 bar and -56.6 ° C, and must be maintained in liquid form within a specific pressure and temperature range. This requires ships to simultaneously cope with the dual conditions of low temperature and high pressure, and the construction difficulty is significantly higher than that of conventional liquefied gas ships.
The cargo containment system is the technical core. At present, the mainstream solution adopts C-type independent cargo tanks arranged in cylindrical or double leaf shapes. A typical design includes two technical routes: the high-pressure scheme (about 19 bar, -35 ° C) is suitable for small ships of 7500 cubic meters; The low-pressure scheme (6-8 bar, approximately -50 ° C) has become the mainstream choice for large ships. Low voltage design can significantly reduce construction costs and is key to commercial large-scale transportation.
The re liquefaction system is another key technology used to regulate the pressure and temperature inside the cabin, ensuring stable cargo conditions during long-distance transportation. Some advanced designs also integrate onboard carbon capture function, which can capture CO ₂ from the exhaust gas of the main engine.
In terms of power and environmental protection, the new generation of LCO ₂ transport ships widely adopt LNG dual fuel power, and some designs have begun to explore zero carbon solutions such as ammonia fuel and methanol fuel.
The size of ship types varies significantly due to differences in route demand: short distance regional transportation is mainly based on less than 20000 cubic meters; The demand for offshore injection projects ranges from 20000 to 50000 cubic meters; Long distance trade in the Asia Pacific region requires larger ship types. The design with a length of 290 meters and a draft of 12 meters can be adapted to major ports in East Asia.
📈 Market Outlook: From Sprout to the Eve of Explosion
The LCO ₂ transport ship market is still in its early stages. As of October 2025, there are only 8 LCO ₂ transport ships in service worldwide, with a capacity of 24000 cubic meters. Two ships will be delivered in 2025, and it is expected to deliver five ships in 2026. DNV predicts that hundreds of LCO ₂ transport ships may be needed by 2050.
The exponential growth of carbon capture scale is the core driving force. It is expected that by 2030, the global CO ₂ capture capacity will reach 430 million tons per year, and the storage capacity will increase to 670 million tons per year. The EU plans to achieve a CO2 injection capacity of 50 million tons per year by 2030.
The Asia Pacific market is considered the largest growth pole. The cross-border carbon transfer plans of countries such as Japan, South Korea, and Singapore have an urgent demand for large LCO ₂ transport ships. It is expected that by 2055, nearly 80 specialized ships will be needed for cross regional shipping in the Asia Pacific region.
The European market is also considerable. The transportation volume of CO ₂ in Europe is expected to increase from 70 million tons per year in 2030 to 320 million tons per year in 2050, and ship transportation will continue to occupy an important share. Research predicts that Europe needs 65 CO ₂ transport ships and 33 dedicated ports to meet the 2050 target.
