Maritime Surveillance Associates Inc.
Brunswick, ME Part of Sentient Digital, Inc.
- UEI
- R8NBLLWCK368
- CAGE
- 023D6
- Primary NAICS
- 541511 Custom Computer Programming Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- Corporate family
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Sentient Digital, Inc.
Parent
KZZSGCJVHXS6
- Maritime Surveillance Associates Inc. R8NBLLWCK368
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Sentient Digital, Inc.
Parent
KZZSGCJVHXS6
- SAM.gov registration date
- Physical address
- 2 Pegasus St #1, Brunswick, ME 04011, USA
- Website
- sdi.ai
- Founded
- 2017
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
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- Information Technology
- Software & Services
- Internet Software & Services
- SIC code
- 73 Business Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| This order is for the procurement of labor hours for the enhancements, training, and support of the grams software. | Naval Air Systems Command | $774,858 | |
| This delivery order is to procure engineering support, program management and training in support of grams. | Naval Air Systems Command | $415,388 | |
| Engineering support & program management | Naval Air Systems Command | $745,740 | |
| Grams development and enhancements and cloud prototype application | Naval Air Systems Command | $1,270,508 | |
| Harbinger application enhancements in grams and GPR for harbinger | Naval Air Systems Command | $767,386 |
About Maritime Surveillance Associates Inc.
Maritime Surveillance Associates Inc., a veteran-owned small disadvantaged business based in Brunswick, Maine, provides software development, engineering support, and program management services for Navy maritime surveillance and signals intelligence systems as a prime contractor on full-and-open competitive procurements. The company is a subsidiary of Sentient Digital Inc., an SBA-certified HUBZone firm and veteran-owned parent company also based in Brunswick. Maritime Surveillance Associates operates as a Subchapter S Corporation and competes exclusively without small business set-asides, positioning itself as a capability-driven vendor rather than a set-aside-dependent operator.
Maritime Surveillance Associates' footprint is narrow and deep — concentrated entirely within naval maritime surveillance systems, particularly the Ground Replay Acoustic Measurement System (GRAMS) and related acoustic data analysis platforms. The company holds a single-award Basic Ordering Agreement (BOA) with the Naval Air Systems Command (NAVAIR) established in April 2020 and renewed on January 15, 2026, through January 15, 2031. Under this BOA, NAVAIR has issued nine task orders worth $14.8 million combined potential value, supplemented by three awards from the Defense Contract Management Agency worth $3.1 million. Representative work includes a $4.97 million cost-plus-fixed-fee delivery order from NAVAIR (January 30, 2026) for labor hours supporting GRAMS enhancements, training, and support through January 2031; a $2.4 million delivery order from NAVAIR (December 5, 2024) for engineering support and program management through December 2029; and a $1.27 million delivery order from NAVAIR (April 12, 2024) for GRAMS cloud prototype application development. The company also executes work on related Navy systems — the Ground Processing and Reporting (GPR) system and the Advanced Tactical Imaging System (A-TIS) — under the same NAVAIR relationship and through DCMA task orders. Performance locations include the primary facility in Brunswick, Maine, and a secondary location in Woburn, Massachusetts.
Customer concentration is absolute: the Department of the Navy accounts for 97% of recent awards by count, with NAVAIR anchoring 12 awards representing $20.2 million in combined potential value — nearly 86% of the company's total award portfolio of $23.6 million. The Defense Contract Management Agency provides the only secondary customer base, with three awards worth $3.1 million. Total awards have been sparse (29 across the portfolio since 1997, with just seven awards issued in the past five years), reflecting the narrow technical specialization and long-term BOA structure that favors steady delivery orders over competition. The company is obligated $18 million against its $23.6 million combined potential value (76% obligation rate), indicating mature, active contracts in execution. Maritime Surveillance Associates operates as a pure prime — no subcontract footprint in the source — and does not hold seats on government-wide vehicles or agency-wide IDIQs outside the NAVAIR BOA framework.
SBA capabilities narrative
Custom software development and engineering services. Several software products currently used by US Gov agencies and labs
Quick answers
What is Maritime Surveillance Associates Inc.'s UEI?
Maritime Surveillance Associates Inc.'s Unique Entity ID (UEI) in SAM.gov is R8NBLLWCK368.
What is Maritime Surveillance Associates Inc.'s CAGE code?
Maritime Surveillance Associates Inc.'s CAGE code is 023D6.
What is Maritime Surveillance Associates Inc.'s primary NAICS code?
Maritime Surveillance Associates Inc.'s primary NAICS code is 541511 (Custom Computer Programming Services).
Where is Maritime Surveillance Associates Inc. located?
Maritime Surveillance Associates Inc.'s physical address in SAM.gov is 2 Pegasus St #1, Brunswick, ME 04011, USA.
Is Maritime Surveillance Associates Inc. registered in SAM.gov?
Yes. Maritime Surveillance Associates Inc.'s SAM.gov registration is active through November 25, 2026.
Who is Maritime Surveillance Associates Inc.'s parent company?
Maritime Surveillance Associates Inc. is part of Sentient Digital, Inc.
What is Maritime Surveillance Associates Inc.'s most recent federal award?
Maritime Surveillance Associates Inc.'s most recent federal contract award is This order is for the procurement of labor hours for the enhancements, training, and support of the grams software (N0001926F1032), from Naval Air Systems Command, on January 30, 2026.
On GovTribe
See Maritime Surveillance Associates Inc.'s full federal record
- Federal contract awards
- IDV awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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