Simplex: Non-Redundant Dynamic Positioning Systems

A Simplex system in Dynamic Positioning (DP) refers to a non-redundant configuration that relies on a single computer to manage all DP functions. This setup is typically found on vessels where the operational and safety requirements do not mandate redundancy, such as in DP Equipment Class 1 vessels.

Characteristics of Simplex Systems

1. Single Computer: All DP calculations and control commands are managed by one computer, with no backup system.
2. No Redundancy: A failure in the DP computer would result in the complete loss of DP functionality.
3. Cost-Effective: Lower initial investment and maintenance costs compared to more complex redundant systems.
4. Limited to Low-Risk Operations: Used in environments where position loss poses minimal risks.

Applications of Simplex Systems

1. Support Vessels: For tasks like anchor handling or supply operations in low-risk conditions.
2. Shallow-Water Operations: Environments where manual intervention can mitigate risks.
3. Non-Critical DP Tasks: Scenarios where precise station-keeping is not essential for safety or success.

Advantages of Simplex Systems

• Lower Cost: Simpler hardware and fewer components reduce costs for installation and maintenance.
• Ease of Operation: Simpler systems require less training and configuration.
• Compact Design: Requires less space, making it ideal for smaller vessels.

Challenges and Limitations

• High Risk of Downtime: The lack of redundancy means any failure results in the loss of DP capability.
• Not Suitable for High-Risk Operations: Cannot meet the requirements of DP Equipment Class 2 or 3.
• Limited Safety Features: Relies heavily on operator vigilance and external monitoring.

Lerus Training: Preparing Professionals for Simplex and Complex DP Systems

At Lerus Training, we provide specialized courses for understanding and operating Simplex DP Systems as well as transitioning to more advanced configurations. Our training programs include:

• The fundamentals of Simplex systems and their operational applications.
• Best practices for safe operation and risk mitigation in non-redundant setups.
• Practical simulations to build confidence in handling potential system failures.

With experienced instructors and advanced simulators, Lerus Training ensures maritime professionals are well-equipped to manage Simplex systems effectively and safely.