The most important principles and class requirements concerning control systems are related to:
Design principles
- System configuration; integration vs. segregation and independence
- Maximum unavailable time
- Response to failures
- Emergency- and backup operation
- Software assessment
System Design
- Remote and local control
- Automatic control
- Remote and local indication
- Safety
- Alarm and pre-warning
- System operation and maintenance
- Power distribution
Component Design and Installation
- Environmental strains
- Design and installation principles
User Interface
- Workstation design and arrangement
- Human machine interface
These principles and requirements are predominantly stated in DNV Rules for Control and Monitoring Systems Pt.4 Ch.9. However, requirements for particular systems and class notations are also stated in other parts of the rules such as e.g. DNV Rules for Steering Gear Pt.4 Ch.14.