The Catenary Anchor Mooring (CALM) system is the core equipment for offshore crude oil transfer and loading/unloading. Zebung Technology, leveraging its deep technical expertise in the marine pipeline field, has developed a full range of floating and underwater oil hoses suitable for the CALM system. With modular design, redundant safety structures, and strong environmental adaptability, it has become a reliable solution for offshore energy transmission in shallow waters (15–450 meters).
1. Full-line hose configuration, compatible with the full operating range of the CALM system
Zebung Technology provides a complete hose solution tailored to the characteristics of the CALM system, covering all scenarios from surface to underwater:
The floating hose system integrates modular pipelines such as fence pipes, tail pipes, reducers, main pipes, and one-end reinforced semi-floating pipes to meet different unloading throughput requirements. It offers two major structures: single-frame and double-frame. The double-frame adopts an innovative “pipe-in-pipe” design, providing dual protection from the main and auxiliary frames. It is equipped with an internal leakage alarm system that monitors the status of the frame in real time, preventing leakage pollution from the source.
The underwater hose system addresses the pain points of difficult underwater replacement and high construction costs. It generally adopts a high-strength double-frame structure, balancing long service life and structural stability. It supports three layout forms: free S-shaped, small-angle S-shaped, and Chinese lantern-shaped, with floating hoses to optimize layout, reduce collision risks, and adapt to complex seabed conditions.
II. Efficient transmission and transformation process, dynamically adapting to marine environment
After the tanker is moored to the buoy turntable, the Zebung floating hose quickly connects the tanker to the buoy’s Petroleum Delivery Unit (PDU). Crude oil flows into the subsea manifold through the underwater hose and is smoothly transported to the onshore storage tank. The buoy’s 360° rotation design, coupled with the flexible nature of the hose, allows the tanker to freely turn with the wind, waves, and currents, significantly reducing the mooring load and ensuring continuous and stable operation under severe sea conditions.
III. Triple core advantages, safeguarding safety and efficiency
1. Redundant safety design: The dual-layer hose design provides emergency sealing, with leak warning to prevent risks in advance, safeguarding marine ecology and operational safety.
2. Strict quality assurance: It has passed the certification of the French BV classification society, OCIMF GMPHOM 2009 standard, and undergone rigorous tests such as compression resistance, torsion resistance, vacuum, and electrical performance, making it suitable for harsh environments such as high salt spray and strong wind and waves.
3. Economical and flexible deployment: It is suitable for shallow waters, with low investment costs and convenient deployment, making it a mature and efficient choice for crude oil transfer and single-point mooring in offshore oil fields.
Zebung Technology, empowering offshore energy transmission to new heights
As an independent research and development enterprise in the field of marine oil hoses, Zebung Technology provides high-performance hose equipment for the CALM catenary anchor leg mooring system through technological innovation and rigorous quality control. It balances efficient oil transportation, safety and reliability, and environmental adaptability, facilitating the efficient and stable operation of global offshore oil and gas loading and unloading operations.
Post time: Apr-30-2026