Review

Major System/ Platform Variant

Original Planned

Current Planned

Achieved/ Forecast

Variance (Months)

System Readiness

Combat System

Nov 04

Nov 04

0

System Design

Combat System

May 05

May 05

0

Preliminary Design

20 Separate sub-systems or major components

Oct 03 - Oct 06

Nov 03 - Oct 06

1

Critical Design

20 Separate sub-systems or major components (4)

Nov 03 - Apr 07

Nov 03 - Apr 07

0

Variance Explanations

The above data represents rolled up information as the project consists of many subsystems each of which have independent Preliminary Design Review, Critical Design Review or associated activities. Additionally, these system engineering activities were applied across two system baselines. As a result, there were many individual events within each of the above activities where the schedule was allowed to move provided the critical path for the delivery of capability was not impacted adversely. The critical path was based on the submarine docking program. Although some individual activities were ahead or behind schedule the project has maintained the critical path as defined by the submarine docking program.

In some instances slippage has occurred as a result of project management intervention to delay finalisation of sub-system and major component design until the evolving US Tactical Command and Control system baseline was mature. The project schedule has been re-baselined following significant events. To progress the Preliminary Design Review and Critical Design Review activity ahead of the US system development would have incurred significant impairment cost. Preliminary Design Review and Critical Design Review slippage has not impacted capability delivery because of the dependency on the submarine docking program to install the RCS equipment.

Note 4. Some sub systems or major components have several Critical Design Reviews or US equivalent.