SubCom LLC
Overview (BLUF)
SubCom LLC is the United States’ primary submarine cable manufacturer and the world’s second-largest by installed capacity. Wholly owned by Cerberus Capital Management (private equity) since 2018, SubCom is the builder of most trans-Atlantic and trans-Pacific cables connecting the US to allied networks. Its US ownership and Team Telecom status make it the preferred vendor for US government-adjacent cable projects and the principal counterweight to PRC state-linked HMN Technologies in contested cable markets.
Corporate History & Ownership Chain
1955: AT&T Bell Laboratories establishes internal submarine systems manufacturing capability at Eatontown, New Jersey — one of the earliest US centers for coaxial and later fiber optic submarine cable production.
1997: AT&T divests the submarine systems division to Tyco International (Swiss-domiciled industrial conglomerate). Operating as Tyco Submarine Systems Ltd.
2004: Tyco International reorganizes; submarine cable operations renamed Tyco Telecommunications and later Tyco Electronics.
~2012: TE Connectivity spun off from Tyco Electronics; submarine cable operations become TE SubCom — a division of TE Connectivity Ltd.
November 5, 2018: Cerberus Capital Management acquires TE SubCom from TE Connectivity for approximately $325 million. (Fact, High confidence — SEC filing, press release). Entity renamed SubCom LLC. Cerberus is a US-domiciled private equity firm with significant US defense and government-services portfolio companies (including DynCorp, Remington Arms, others).
April 2026: Cerberus Capital Management closes a $2.3 billion continuation vehicle for SubCom — a structure where existing Cerberus fund investors can sell to new investors, or roll forward, within the same PE ownership structure. (Fact, High confidence — Bloomberg/PE industry reporting). This financing signals long-term Cerberus commitment to SubCom ownership and anticipated demand from the multi-billion dollar hyperscaler cable pipeline.
Correction note: SubCom has no affiliation with General Dynamics. This misattribution appears in some secondary sources and should not be repeated.
Strategic Significance (US Government Perspective)
SubCom occupies a unique position in US national security infrastructure:
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Team Telecom preferred vendor: US government policy, implemented through the FCC’s Team Telecom process (EO 13913), has blocked or restricted Chinese participation in trans-Pacific cables connecting to the US. This has created a de facto channel where hyperscaler-funded trans-Pacific cables routinely use SubCom as the manufacturer to navigate FCC review.
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Cable systems built or maintained: SubCom has built or maintained over 40,000 km of trans-Pacific cable systems, including several MAREA-competing trans-Atlantic systems. Major projects include Google’s Curie (US–Chile–Panama), Dunant (US–France), and Firmina (US–Latin America); Meta/Google/Amazon Pacific cables.
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Technology lead: SubCom competes at the state of the art in coherent optics and space division multiplexing (SDM) — the technologies enabling 300+ Tbps per cable system. Its Eatontown facility produces both the fiber pairs and the submarine repeaters.
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Workforce and clearances: SubCom employs significant numbers of cleared personnel and interfaces directly with US intelligence community on cable security architecture.
Competitive Position
SubCom is one of four dominant global submarine cable manufacturers:
| Company | Country | Current Owner |
|---|---|---|
| SubCom | USA | Cerberus Capital Management |
| Alcatel Submarine Networks (ASN) | France | French State (80%), Nokia (20%) |
| NEC Corporation (submarine division) | Japan | NEC (~75%) + Sumitomo Electric (~25%) |
| HMN Technologies | China (PRC) | Hengtong Group (100%) |
The French state’s acquisition of 80% of ASN (completed December 31, 2024) created a strategic parallel to SubCom’s US-centric security role: two of the four major manufacturers are now effectively Western-sovereign entities, while HMN Technologies represents PRC state-adjacent capacity.
Intersecting Concepts & Synergies
- Enables: Western submarine cable sovereignty; US government cable security architecture; trans-Pacific and trans-Atlantic US-allied connectivity
- Counters/Mitigates: HMN Technologies market expansion in US-accessible cable markets; Chinese infrastructure dominance on US-adjacent routes
- Vulnerabilities: Single US manufacturing location (Eatontown) creates concentration risk; private equity ownership prioritizes returns over strategic patient capital — the Cerberus continuation vehicle suggests possible future sale to strategic buyer; limited capacity to compete on pricing in Global South markets where HMN and state subsidies dominate
- Cross-links: HMN Technologies, Who Owns the Cables — Hyperscalers, State Champions, and the Battle for Submarine Infrastructure, The Submarine Cable Map — 600 Systems, 1.5 Million Kilometers
Sources
| Source | Confidence |
|---|---|
| SEC filing — TE Connectivity SubCom sale (2018) | High |
| Bloomberg — Cerberus SubCom continuation vehicle (April 2026) | High |
| US FCC Team Telecom proceedings | High |
| TeleGeography — SubCom project list | High |
| SubCom corporate website (eatontown.com/subcom) | Medium |