Intelligence Overview
GEORGE C GRUGETT · MMSI 369970657 · 🇺🇸 US · Primary Port: Mobile
PERIOD: JAN–DEC 2024
Global Rank
#414
of 69,461 vessels
Composite Score
0.9500
CRITICAL
Total Detections
43
Months Active
10/12
Unique Ports
2
Dark Events
3
AIS blackout
Speed Anomalies
1
Max Speed
92.0 kn
Monthly Detection Volume
2024 MONTHLY DETECTIONS
Alert Type Distribution
Key Intelligence Findings
AIS Blackout Confirmed — 3 Events
Deliberate AIS transponder deactivation detected. Each event represents a period where GEORGE C GRUGETT was operating outside electronic surveillance. Consistent with covert cargo transfer or evasion operations.
Velocity Fraud — 1 Speed Anomaly Events
AIS SOG field manipulated to broadcast physically impossible speeds up to 92.0 knots. Systematic falsification of movement data to corrupt automated tracking algorithms.
Evasion Navigation — 25 Zigzag Events
Erratic course-over-ground patterns up to 163.8° std deviation, far exceeding the 50° anomaly threshold. Pattern consistent with surveillance evasion maneuvers or anchor position AIS noise.
Port Detection Summary
Monthly Alert Log — All Months
| Month | Detections | Severity | Score | Nearest Port | Alert Types |
|---|---|---|---|---|---|
| January 2024 | 1 | MEDIUM | 0.5822 | Mobile | ZIGZAG |
| February 2024 | 7 | MEDIUM | 0.7254 | Mobile | ZIGZAG; DARK_VESSEL |
| March 2024 | 6 | CRITICAL | 0.9500 | New Orleans | ZIGZAG; SPEED_ANOMALY |
| April 2024 | 1 | MEDIUM | 0.5579 | New Orleans | ZIGZAG |
| May 2024 | 4 | MEDIUM | 0.6854 | Mobile | ZIGZAG; DARK_VESSEL |
| August 2024 | 1 | CRITICAL | 0.9000 | Mobile | ZIGZAG |
| September 2024 | 9 | CRITICAL | 0.9000 | Mobile | ZIGZAG |
| October 2024 | 2 | CRITICAL | 0.9000 | Mobile | ZIGZAG |
| November 2024 | 5 | HIGH | 0.7789 | Mobile | ZIGZAG; DARK_VESSEL |
| December 2024 | 7 | MEDIUM | 0.7203 | New Orleans | ZIGZAG; DARK_VESSEL |
Activity Map
Detection events plotted · Color-coded by alert type · Drag to pan · Scroll to zoom
● Speed Anomaly
● Position Jump
● Zigzag
● Dark Vessel
● Rendezvous
Threat Intelligence
Analytical confidence: HIGH · Multi-indicator assessment
Threat Indicators Matrix
| Indicator | Status | Evidence | Confidence |
|---|---|---|---|
| AIS Blackout / Dark Vessel | CONFIRMED | 3 events detected | CRITICAL |
| GPS Spoofing / Position Jump | NOT DETECTED | — | LOW |
| Velocity Fraud / Speed Anomaly | CONFIRMED | 1 events · max 92.0 kn | CRITICAL |
| Evasion Navigation / Zigzag | CONFIRMED | 25 events · max COG std 163.8° | HIGH |
| Ship-to-Ship Rendezvous | NOT DETECTED | — | LOW |
| Multi-Port Operations | POSSIBLE | 2 unique ports | MEDIUM |
Operational Profile
Primary AO
Mobile and surrounding maritime zone
Active Period
10 months of continuous alert activity in 2024
Alert Density
43 detections across 29 individual events (avg 4.3/month)
Active Techniques
◐ DARK ⚡ SPEED ⟳ ZIGZAG
Threat Category
High-Confidence AIS Manipulation — Multiple confirmed evasion techniques
TTP Analysis
Tactics, Techniques & Procedures — Maritime ATT&CK Framework
MAR-T003
RTE-ANO-005
Evasion Navigation
Erratic COG changes exceeding 50° threshold (max 163.8°). Consistent with surveillance evasion or at-anchor AIS manipulation. Count: 25 events.
HIGH CONFIDENCE
25 events
25 events
MAR-T004
AIS-MAN-001
AIS Blackout
Deliberate AIS transponder deactivation to create surveillance gaps. Count: 3 events. Each event represents an unmonitored operational window.
HIGH CONFIDENCE
3 events
3 events
MAR-T001
RTE-ANO-001
Velocity Fraud
AIS SOG field manipulation to broadcast impossible speeds up to 92.0 kn. Corrupts automated tracking algorithms and creates false movement vectors. Count: 1 events.
HIGH CONFIDENCE
1 events
1 events
Risk Analysis
Composite risk scoring · Weighted indicator model · Quantus v2.4
Composite Score
0.9500
CRITICAL
Avg Detection Score
0.7700
Global Rank
#414
of 69,461 vessels
Weighted Indicator Scoring
| Indicator | Count | Weight | Contribution |
|---|---|---|---|
| DARK_VESSEL | 3 | ×3 | 9.0 |
| RENDEZVOUS | 0 | ×4 | 0.0 |
| POSITION_JUMP | 0 | ×2 | 0.0 |
| SPEED_ANOMALY | 1 | ×1 | 1.0 |
| ZIGZAG | 25 | ×0.5 | 12.5 |
| MaxSingleScore | 0.9500 | ×50 | 47.5 |
| COMPOSITE TOTAL | Normalized [0,1] | 0.9500 CRITICAL | |
⚡ Speed Anomaly Detections
Indicator: RTE-ANO-001 · 1 events · Max: 92.0 kn
Total Events
1
Max Reported SOG
92.0 kn
Indicator ID
RTE-ANO-001
Speed Anomaly Events (Top 50 by score)
| Date | Max SOG (kn) | Score | Severity | Port | Coordinates |
|---|
⟳ Zigzag / Erratic Navigation
Indicator: RTE-ANO-005 · 25 events · Max COG std: 163.8°
Total Events
25
Max COG Std Dev
163.8°
Threshold
50°
Zigzag Events (Top 50 by COG deviation)
| Date | COG Std Dev (°) | Score | Severity | Port | Coordinates |
|---|
◐ Dark Vessel Events
Indicator: AIS-MAN-001 · 3 AIS blackout events detected
Dark Vessel Events
3
Indicator
AIS-MAN-001
Risk Level
CRITICAL
◐ DARK EVENT #1 — 2024-02-10T01:27:08
AIS BLACKOUT
Location
33.7824°N, 91.0440°W — New Orleans
AIS Gap Duration
6.7 hours
Pre-Blackout Speed
12.5 knots SOG
Displacement
235.3 NM from port during gap
Score
0.5682 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #2 — 2024-11-07T01:08:07
AIS BLACKOUT
Location
33.9499°N, 91.0512°W — New Orleans
AIS Gap Duration
13.6 hours
Pre-Blackout Speed
4.5 knots SOG
Displacement
245.2 NM from port during gap
Score
0.6699 · MEDIUM
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #3 — 2024-12-15T00:28:19
AIS BLACKOUT
Location
31.5868°N, 91.4026°W — New Orleans
AIS Gap Duration
7.3 hours
Pre-Blackout Speed
7.3 knots SOG
Displacement
119.8 NM from port during gap
Score
0.5585 · LOW
Assessment
AIS gap consistent with deliberate concealment.
Port History
2 distinct port areas · US primary flag state
Complete Port Detection Summary
| Port | Country | Detections | Avg Score | Avg Dist NM | Risk |
|---|---|---|---|---|---|
| New Orleans | 🇺🇸 | 21 | 0.7115 | 103.7 | STANDARD |
| Mobile | 🇺🇸 | 8 | 0.6724 | 276.5 | STANDARD |
🇺🇸 New Orleans — Port Profile
21 detections · Avg score 0.7115 · Avg distance 103.7 NM
Total Detections
21
Primary port of operation
Avg Alert Score
0.7115
Avg Distance NM
103.7
Port proximity zone
Detection Types at New Orleans
Coordinates: 29.944°N, 90.063°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
21 of 29 total detections (72.4%)
Avg Distance from Port
103.7 NM — consistent with port proximity operations
🇺🇸 Mobile — Port Profile
8 detections · Avg score 0.6724 · Avg distance 276.5 NM
Total Detections
8
Secondary port
Avg Alert Score
0.6724
Avg Distance NM
276.5
Possible spoofed coords
Detection Types at Mobile
Coordinates: 30.694°N, 88.044°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
8 of 29 total detections (27.6%)
Avg Distance from Port
276.5 NM — anomalously high, suggests spoofed coordinates
Ownership Intelligence
MMSI registry · Flag state analysis · Beneficial ownership investigation
Vessel Name
GEORGE C GRUGETT
MMSI
369970657
Flag State (MMSI-derived)
🇺🇸 US
MID Code
369 → 🇺🇸 US
Primary Port
Mobile
Detection Period
10 months (2024)
Registered Owner
Pending registry lookup
Beneficial Owner
Requires FinCEN CDD query
OFAC SDN Status
Pending cross-reference
Recommended Action
Physical inspection + full registry query
Vessel Type Analysis
AIS declared type · Physical capability vs. observed behavior
Type Mismatch Assessment
AIS Declared Type
vessel_type=37 (Pleasure Craft)
Behavior Consistency
Requires investigation
Speed Capability
Reported 92.0 kn — physically impossible for Type 37 (max ~45 kn high-performance)
Inspection Priority
HIGH — Recommend USCG/CBSA physical boarding and documentation review
Applicable Statutes
47 C.F.R. § 80.953 (AIS falsification) · 33 C.F.R. § 164.46 (AIS carriage) · 21 U.S.C. § 955 (maritime drug law)