Defense Program Sustainment Analysis

Obsolescence Risk and Impact

SSN-774 Virginia Class Attack Submarine

Updated March 2024

11,141

Parts with Declining Procurement

1,901

Manufacturers with Declining Procurement

78,293

Obsolete Parts

22,493

Sole Sourced Parts

Obsolescence Risk and Impact: SSN-774 Virginia Class

Ark.ai conducted a sustainment program analysis of the SSN-774 Virginia Class Attack Submarine program, examining the vendors, their suppliers, manufacturers, shippers, and other members of the supply chain ‚Äì as well as the critical parts and NiiNs the SSN-774 Virginia Class program relies on. The program analysis focuses particularly on obsolescence risk, including obsolete NiiNs, declining procurement, and sole sourced parts.

The analysis of the SSN-774 Virginia Class program resulted in the following statistics. There are 11,141 Parts with Declining Procurement and 1,901 Manufacturers with Declining Procurement. The count of Obsolete Parts is 78,293 and the SSN-774 Virginia Class program is dependent on 22,493 Sole Sourced Parts.

Information about the critical vendors for the SSN-774 Virginia Class program, as well as a list of the obsolete and sole sourced parts, are included in the following tables.

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Top Organizations by NiiN Count

Name	Count of NiiNs	Dollars Awarded	Average Unit Price
Electric Boat Corporation	10,201	$14,149,523	$5,656.00
Keysight Technologies, Inc.	1,577	$23,292	$137
Rockwell Collins, Inc.	1,183	$1,837	$0.78
Northrop Grumman Corporation	816	$13,612,428	$9,053.57
Vacco Industries	775	$11,940,521	$9,654

Top Sole Sourced NiiNs

NiiN	Description	Unit Price	Vendor Name
014921990	DISK,VALVE	$310,330	VACCO IND
014983103	BAFFLE,ACOUSTIC,SONAR	$309,187	NORTHROP GRUMMAN SYSTM CORP
015991689	NRP,SERVICE KIT B	$306,911	WARTSILA DEFENSE INC
015991688	NRP,SERVICE KIT A	$294,170	WARTSILA DEFENSE INC
016769102	BEARING HALF,SLEEVE	$250,775	DURAMAX MARINE LLC

Top Obsolete NiiNs

NiiN	Description	WSDC Count	Authorized Suppliers
009338120	WASHER,LOCK	1	36
009296395	WASHER,LOCK	1	38
009338121	WASHER,LOCK	1	23
009338118	WASHER,LOCK	1	34
009338119	WASHER,LOCK	1	21

Top Weapon System Designator Codes

WSDC	Name	NiiN Count	Percent of Total NiiNs
YJN	VIRGINIA CLASS SUBMARINE, SSN-774	55,263	97.6%
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ABOUT OBSOLESCENCE RISK AND IMPACT

Evaluate the sustainability of critical national security programs and weapon systems. Understand critical vendors and manufacturers, the parts and NiiNs they supply for sustainment programs, the obsolescence risk for those NiiNs, and the potential impact on the program at large.

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