REFIT SYSTEM
Navigation
Navigation equipment must be clear, redundant and usable when individual devices fail.
Must be right

Position, heading, depth, communications, paper backup and protected power supply.
Sensible later
Image plannedLong-range communication and network integrationTechnical placeholder · replace without changing the layout
Network integration and displays that improve workload without creating dependency.
| Decision lens | What we check |
|---|---|
| Reliability | Proven marine-grade solution and sensible redundancy. |
| Maintainability | Access, documentation and globally available parts. |
| Consumption | Energy, water, weight and space in daily use. |
| Total cost | Installation, service, spares and likely replacement cycle. |
