Defense Program Sustainment Analysis

Obsolescence Risk and Impact

SSN-21 Seawolf Class Attack Submarine

Updated March 2024

9,896

Parts with Declining Procurement

1,594

Manufacturers with Declining Procurement

106,507

Obsolete Parts

31,518

Sole Sourced Parts

Obsolescence Risk and Impact: SSN-21 Seawolf Class

Ark.ai conducted a sustainment program analysis of the SSN-21 Seawolf 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-21 Seawolf 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-21 Seawolf Class program resulted in the following statistics. There are 9,896 Parts with Declining Procurement and 1,594 Manufacturers with Declining Procurement. The count of Obsolete Parts is 106,507 and the SSN-21 Seawolf Class program is dependent on 31,518 Sole Sourced Parts.

Information about the critical vendors for the SSN-21 Seawolf 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	5,059	$3,052,017	$1,432.00
Rockwell Collins, Inc.	1,964	$36,985	$3,407
Keysight Technologies, Inc.	1,856	$23,292	$137.29
Sargent Aerospace & Defense, LLC	1,135	$8,182,052	$4,137.93
Northrop Grumman Corporation	1,125	$1,158,125	$3,253

Top Sole Sourced NiiNs

NiiN	Description	Unit Price	Vendor Name
014742699	VALVE,LINEAR,DIRECTIONAL CONTROL	$146,317	SARGENT AEROSPACE AND DEFENSE LLC
013658012	POWER SUPPLY	$145,335	RANTEC POWER SYSTM INC
016100716	HOUSING,TRANSMISSION,MECHANICAL	$111,907	NORTHROP GRUMMAN SYSTM CORP
014255409	BOOT,DUST AND MOISTURE SEAL	$94,156	NORTHROP GRUMMAN SYSTM CORP
015017658	VALVE,LINEAR,DIRECTIONAL CONTROL	$88,028	SARGENT AEROSPACE AND DEFENSE LLC

Top Obsolete NiiNs

NiiN	Description	WSDC Count	Authorized Suppliers
009338120	WASHER,LOCK	2	36
009296395	WASHER,LOCK	2	38
009338121	WASHER,LOCK	2	23
009338118	WASHER,LOCK	2	34
009338119	WASHER,LOCK	2	21

Top Weapon System Designator Codes

WSDC	Name	NiiN Count	Percent of Total NiiNs
JGN	SEAWOLF CLASS SSN	66,784	96.8%
ZLN	SSN23 MMP SYSTEMS	15,726	22.8%
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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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