The Virginia Los Angeles 
The SSN force peaked at 98 SSNs in 1987 and has been declining since.  The current force goal is 48 SSNs, however, the Navy’s various 30 year plan projections show a dip to 42-43 in the late 2020’s and a sustained shortfall below the 48 goal from 2022 – 2034.
Here’s a quick dimensional comparison of the classes.  Note the trend towards bigger boats just as we’ve observed with the SSBN(X) Ohio Ohio Virginia 
Seawolf          353’ x 40’                   8 tubes / 50 torpedoes
The Virginia 
1998 – 2011  14        $2.6B (average cost for the period)
2012                 2        $2.6B
2013                 2        $2.5B
2014                 2        $2.7B
2015                 2        $2.7B
2016                 2        $2.8B
2017                 2        $2.9B
2018                 2        $3.0B
2019                 2        ?  VPM will be incorporated from this point on
CRS reports (3) that construction in FY14-FY18 will be performed under a Multi-Year Procurement (MYP) arrangement which is estimated by the Navy to produce 14% savings.  However, looking at the planned construction costs versus previous years, there is no evidence of cost savings.  Serial construction cost savings and MYP should be combined in FY14-FY18 for significant savings but the projected costs are not only not reduced, they’re anticipated to rise by $300M.
The Virginia Payload Module (VPM) is planned to be incorporated starting in 2019.  The module consists of 4 tubes x 7 Tomahawk missiles = 28 missiles per sub.  The VPM is the Navy’s response to losing the SSGNs which carry over 150 Tomahawks each.  According to the Navy, it will require 15-20 Virginias Virginia 
While the Virginia 
“Because Navy security rules prevent collection of useful operational test data from Virginia Virginia 
No surprise there.  We’ve noted in previous posts that realistic testing, in general,  is a Navy shortcoming.
The overall assessment comes across as neutral or a slight improvement over the 688 class.
“Although Virginia Los Angeles 
The report notes specific problems with the Wide Aperture Arrays.
“After completion of operational testing, the Navy issued software changes intended to address the severe performance problems observed with the Wide Aperture Array.”
“… the Navy should re-evaluate operational effectiveness on a submarine with a repaired Wide Aperture Array.”
DOT&E notes that problems are propagating into the fleet due to the Navy’s insistence on meeting schedules over identifying and fixing problems.
“DOT&E assesses that the late fix of the array’s deficiencies is a result of the Navy’s schedule-driven development processes, which fields new increments without completing adequate developmental testing.”
Further testing is recommended.
“Repeat the FOT&E event to determine Virginia Virginia Los Angeles Virginia 
In summary, the Virginia Virginia Los Angeles Virginia Los Angeles Virginia 
(1) Dept of Navy FY14 Budget Estimates, Shibuilding and Conversion, Apr 2013
(2) DOT&E FY2012  Annual Report
(3) Congressional Research Service, “Navy Virginia 
Submarine Procurement: Background and Issues for Congress”, Ronald O'Rourke, 2-Apr-12 
(4) U.S. 

