Understanding LNG Carrier Specifications
The 174,000 CBM Standard
The modern LNG carrier is one of the most sophisticated vessels in the maritime industry. With capacities ranging from 125,000 to 180,000 cubic meters, the 174,000 CBM specification has emerged as the industry standard for newbuild vessels.
1. Why 174,000 CBM?
The 174,000 CBM capacity has become the preferred size for modern LNG carriers because it offers the optimal balance between cargo efficiency, port accessibility, and operational economics. This size allows vessels to serve most global LNG terminals while maximizing revenue per voyage.
174,000 CBM = Approximately 1,000,000 barrels of oil equivalent
2. Cargo Containment Systems
Self-supporting spherical tanks made of aluminum alloy. Highly robust and resistant to sloshing. Typically used in older vessels but still reliable.
Thin metal membrane supported by insulation layers. Better space utilization, lighter weight, and dominates modern newbuild orders.
3. Cryogenic Technology
LNG is stored and transported at -162°C (-260°F). Maintaining this temperature requires advanced cryogenic technology and specialized insulation systems that limit heat ingress and boil-off gas (BOG).
4. Propulsion Systems
Modern LNG carriers feature advanced propulsion systems that utilize boil-off gas (BOG) as fuel. This reduces fuel costs and emissions while efficiently managing cargo evaporation.
- TFDE (Two-Stroke Diesel Electric) – High efficiency, low emissions
- X-DF (Dual-Fuel) – Flexible operation with diesel or gas
- ME-GI (Gas Injection) – High-pressure gas injection technology
5. Key Dimensions
~300 meters
~46 meters
~12 meters
~19.5 knots
Key Takeaways
- 174,000 CBM is the modern industry standard capacity
- Membrane-type tanks dominate newbuild orders
- LNG stored at -162°C with minimal boil-off
- Modern propulsion uses natural boil-off as fuel
About NISMA LNG
NISMA LNG is developing a fleet of 5 modern LNG carriers (174,000 CBM each) built in Korean shipyards.
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