Navy Shaved 627 Pounds to Hunt Hidden Submarines

By Miriam Adler · August 10, 2026

Submerged vessels were stripped of their secrets by a specialized acoustic dragnet that turned the vast Atlantic and Pacific into a series of data points to be tracked.

The public record knows Matthew Tyler Musto as Blackbear, a singer and songwriter who built a career on the visibility of the pop charts and the loud, curated presence of a modern recording artist. He is a man of the spotlight. But there is another bear in the government’s lexicon, one that operates in a world where visibility is a failure and the only thing that matters is the signal.

An FAS mirror provides a program description for CNO Project BEARTRAP, a specialized effort to equip P-3C aircraft with acoustic data collection capabilities that exceed the standard specifications of the fleet. While Musto’s Blackbear creates sound to be consumed by millions, Project BEARTRAP is designed to listen to the silence of the deep ocean, hunting for the acoustic signatures of submerged vessels. It is a project of subtraction and precision, where the goal is not to be heard, but to hear everything.

POS 16 and POS 17

The technical heart of this operation resides in two specific locations aboard the aircraft: POS 16 and POS 17. According to the FAS program description, these positions are the nerve centers for the aircraft’s acoustic capabilities. In the older configuration, POS 16 housed the AN/AQA-7(V) signal processor and AN/ARR-72 sonobouy receivers. POS 17 was home to a Scientific Atlanta 5004-469 processor and a Fluke 1722A Instrument Controller.

By 1995, the Navy decided these systems were obsolete. In partnership with Lucent Technologies, the Navy initiated an upgrade to replace these legacy components with an AN/UYS-2A based system. The physical transformation was a study in efficiency. The upgrade reduced the aircraft's weight by 627 pounds—a significant margin in aviation, where every pound saved is fuel gained or more equipment added.

The new layout simplified the hunt. The functions of both POS 16 and POS 17 were consolidated under the AN/UYS-2A signal processor and a TAC-4 System Controller. The operators at these positions were no longer managing a clutter of disparate hardware; instead, they were provided with a monitor, a keyboard, and a trackball. The act of tracking a foreign submarine was reduced to the tactile click of a trackball and the glow of a screen, turning the vast, terrifying expanse of the Atlantic or Pacific into a series of data points to be localized and tracked.

SIC Code 8711

There is a banal, corporate quality to the way the state acquires its ears. On October 8, 1997, the Department of the Navy’s Fleet and Industrial Supply Center in Jacksonville, Florida, issued a solicitation for technical services to support Project BEARTRAP. The solicitation was not aimed at the giants of the defense industry, but was instead set aside entirely for small businesses.

The procurement was categorized under Standard Industrial Classification (SIC) code 8711 for Engineering Services, with an average annual receipts size standard of $2.5 million. The document notes that 8711 is a "confusing" code, containing four different size standards, which required an amendment to the solicitation on October 27, 1997, to clarify that the small business set-aside was indeed in effect.

This detail reveals the quiet integration of the surveillance state into the local economy of Northern Florida. The hunt for underwater targets is not just the work of admirals and intelligence officers; it is the work of small engineering firms in Jacksonville, operating within the margins of a federal procurement code. The military-industrial complex often appears as a monolithic entity, but as the BEARTRAP file shows, it often functions as a network of small-scale contractors providing the precise technical labor required to maintain a global dragnet.

CNO Project K-41

The operational control of these assets falls under the Commander Patrol Wings Atlantic (COMPATWINGSLANT) and the Commander Patrol Wings Pacific (COMPATWINGSPAC). The lead laboratory for the development and testing of these systems was designated as NAVAIRWARCENACDIV, which also served as the cognizant field activity for the maintenance of the avionics suite.

The language of the document is sterile, focusing on "throughput," "supportability," and "performance." It avoids discussing the geopolitical stakes of acoustic collection or the ethical implications of an ocean where no vessel can truly remain hidden. We are left with the image of the P-3 Special Missions platform—a multi-mission aircraft whose "special" nature is defined by its ability to strip the ocean of its secrets.

The document describes the goal as providing capabilities "beyond those normally associated with the P-3C aircraft." It is a reminder that the official version of a weapon system is often just a baseline, a public-facing shell that hides a more capable, more invasive reality underneath. While the public record discusses the general utility of the P-3C, Project BEARTRAP represents the hidden layer, the specialized edge of the Navy's reach.

The Statement of Work identifies the overall effort for these modifications and the AQA-7 replacement as CNO Project K-41.