| Description | Remedial Action |
| Uncertainty in the submarine docking cycle (a result of unscheduled maintenance arisings) and the delayed availability of submarines has impacted the schedule for installing engineering enhancements and new capability on the boats. | This Issue is being actioned by: • Monitoring Submarine Availability Group outcomes. The Project Office is not in a position to treat this issue, but is monitoring priorities and opportunities to install engineering enhancements earlier, when practicable. |