Intelligence Overview
EMMA GRACE · MMSI 538009902 · 🏴 US · Primary Port: Boston
PERIOD: JAN–DEC 2024
Global Rank
#489
of 69,461 vessels
Composite Score
0.9500
CRITICAL
Total Detections
33
Months Active
6/12
Unique Ports
4
Dark Events
5
AIS blackout
Monthly Detection Volume
2024 MONTHLY DETECTIONS
Alert Type Distribution
Key Intelligence Findings
AIS Blackout Confirmed — 5 Events
Deliberate AIS transponder deactivation detected. Each event represents a period where EMMA GRACE was operating outside electronic surveillance. Consistent with covert cargo transfer or evasion operations.
Evasion Navigation — 7 Zigzag Events
Erratic course-over-ground patterns up to 103.5° std deviation, far exceeding the 50° anomaly threshold. Pattern consistent with surveillance evasion maneuvers.
Port Detection Summary
Monthly Alert Log — All Months
| Month | Detections | Severity | Score | Nearest Port | Alert Types |
|---|---|---|---|---|---|
| April 2024 | 12 | HIGH | 0.7963 | San Juan | DARK_VESSEL; ZIGZAG |
| May 2024 | 2 | CRITICAL | 0.9500 | New Orleans | DARK_VESSEL |
| June 2024 | 7 | CRITICAL | 0.9000 | Boston | ZIGZAG |
| July 2024 | 2 | HIGH | 0.8401 | Boston | DARK_VESSEL; ZIGZAG |
| August 2024 | 1 | MEDIUM | 0.6917 | New York | ZIGZAG |
| September 2024 | 9 | HIGH | 0.8527 | New York | ZIGZAG; POSITION_JUMP |
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 | 5 events detected | CRITICAL |
| GPS Spoofing / Position Jump | NOT DETECTED | — | LOW |
| Velocity Fraud / Speed Anomaly | NOT DETECTED | — | LOW |
| Evasion Navigation / Zigzag | CONFIRMED | 7 events · max COG std 103.5° | HIGH |
| Ship-to-Ship Rendezvous | NOT DETECTED | — | LOW |
| Multi-Port Operations | CONFIRMED | 4 unique ports | HIGH |
| High-Risk Port Proximity: Havana | CONFIRMED | 2 detections | HIGH |
Operational Profile
Primary AO
Boston and surrounding maritime zone
Active Period
6 months of continuous alert activity in 2024
Alert Density
33 detections across 12 individual events (avg 5.5/month)
Active Techniques
◐ DARK ⟳ ZIGZAG
Threat Category
AIS Anomaly — Single or dual technique pattern
TTP Analysis
Tactics, Techniques & Procedures — Maritime ATT&CK Framework
MAR-T003
RTE-ANO-005
Evasion Navigation
Erratic COG changes exceeding 50° threshold (max 103.5°). Consistent with surveillance evasion or at-anchor AIS manipulation. Count: 7 events.
HIGH CONFIDENCE
7 events
7 events
MAR-T004
AIS-MAN-001
AIS Blackout
Deliberate AIS transponder deactivation to create surveillance gaps. Count: 5 events. Each event represents an unmonitored operational window.
HIGH CONFIDENCE
5 events
5 events
Risk Analysis
Composite risk scoring · Weighted indicator model · Quantus v2.4
Composite Score
0.9500
CRITICAL
Avg Detection Score
0.8385
Global Rank
#489
of 69,461 vessels
Weighted Indicator Scoring
| Indicator | Count | Weight | Contribution |
|---|---|---|---|
| DARK_VESSEL | 5 | ×3 | 15.0 |
| RENDEZVOUS | 0 | ×4 | 0.0 |
| POSITION_JUMP | 0 | ×2 | 0.0 |
| SPEED_ANOMALY | 0 | ×1 | 0.0 |
| ZIGZAG | 7 | ×0.5 | 3.5 |
| MaxSingleScore | 0.9500 | ×50 | 47.5 |
| COMPOSITE TOTAL | Normalized [0,1] | 0.9500 CRITICAL | |
⟳ Zigzag / Erratic Navigation
Indicator: RTE-ANO-005 · 7 events · Max COG std: 103.5°
Total Events
7
Max COG Std Dev
103.5°
Threshold
50°
Zigzag Events (Top 50 by COG deviation)
| Date | COG Std Dev (°) | Score | Severity | Port | Coordinates |
|---|
◐ Dark Vessel Events
Indicator: AIS-MAN-001 · 5 AIS blackout events detected
Dark Vessel Events
5
Indicator
AIS-MAN-001
Risk Level
CRITICAL
◐ DARK EVENT #1 — 2024-04-06T06:52:55
AIS BLACKOUT
Location
18.1989°N, 69.7339°W — San Juan
AIS Gap Duration
11.4 hours
Pre-Blackout Speed
0.6 knots SOG
Displacement
207.4 NM from port during gap
Score
0.6186 · LOW
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #2 — 2024-04-07T04:47:45
AIS BLACKOUT
Location
18.1042°N, 69.9588°W — San Juan
AIS Gap Duration
15.6 hours
Pre-Blackout Speed
1.1 knots SOG
Displacement
220.7 NM from port during gap
Score
0.7030 · MEDIUM
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #3 — 2024-04-08T02:54:07
AIS BLACKOUT
Location
18.0571°N, 69.9881°W — San Juan
AIS Gap Duration
14.7 hours
Pre-Blackout Speed
1.1 knots SOG
Displacement
222.7 NM from port during gap
Score
0.6812 · MEDIUM
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #4 — 2024-04-14T15:40:59
AIS BLACKOUT
Location
22.4650°N, 86.1319°W — Havana
AIS Gap Duration
6.7 hours
Pre-Blackout Speed
2.5 knots SOG
Displacement
212.0 NM from port during gap
Score
0.5198 · LOW
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #5 — 2024-04-15T06:24:19
AIS BLACKOUT
Location
22.1931°N, 85.9819°W — Havana
AIS Gap Duration
9.8 hours
Pre-Blackout Speed
1.2 knots SOG
Displacement
207.8 NM from port during gap
Score
0.5884 · LOW
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
Port History
4 distinct port areas · US primary flag state
Complete Port Detection Summary
| Port | Country | Detections | Avg Score | Avg Dist NM | Risk |
|---|---|---|---|---|---|
| Galveston | 🇺🇸 | 5 | 0.7643 | 29.0 | STANDARD |
| San Juan | 🇵🇷 | 4 | 0.6479 | 214.8 | STANDARD |
| Havana | 🇨🇺 | 2 | 0.5541 | 209.9 | HIGH |
| Houston | 🇺🇸 | 1 | 0.4700 | 12.5 | STANDARD |
🇺🇸 Galveston — Port Profile
5 detections · Avg score 0.7643 · Avg distance 29.0 NM
Total Detections
5
Primary port of operation
Avg Alert Score
0.7643
Avg Distance NM
29.0
Port proximity zone
Detection Types at Galveston
Coordinates: 29.301°N, 94.798°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
5 of 12 total detections (41.7%)
Avg Distance from Port
29.0 NM — consistent with port proximity operations
🇵🇷 San Juan — Port Profile
4 detections · Avg score 0.6479 · Avg distance 214.8 NM
Total Detections
4
Secondary port
Avg Alert Score
0.6479
Avg Distance NM
214.8
Possible spoofed coords
Detection Types at San Juan
Coordinates: 18.465°N, 66.115°W
Port Intelligence Notes
Port Country
🇵🇷 PR
Risk Classification
LOW — Standard port monitoring applies
Detection Share
4 of 12 total detections (33.3%)
Avg Distance from Port
214.8 NM — anomalously high, suggests spoofed coordinates
🇨🇺 Havana — Port Profile
2 detections · Avg score 0.5541 · Avg distance 209.9 NM
Total Detections
2
Secondary port
Avg Alert Score
0.5541
Avg Distance NM
209.9
Possible spoofed coords
Detection Types at Havana
Coordinates: 23.137°N, 82.377°W
Port Intelligence Notes
Port Country
🇨🇺 CU
Risk Classification
HIGH — HIGH
Detection Share
2 of 12 total detections (16.7%)
Avg Distance from Port
209.9 NM — anomalously high, suggests spoofed coordinates
🇺🇸 Houston — Port Profile
1 detections · Avg score 0.4700 · Avg distance 12.5 NM
Total Detections
1
Secondary port
Avg Alert Score
0.4700
Avg Distance NM
12.5
Port proximity zone
Detection Types at Houston
Coordinates: 29.749°N, 95.362°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
1 of 12 total detections (8.3%)
Avg Distance from Port
12.5 NM — consistent with port proximity operations
Ownership Intelligence
MMSI registry · Flag state analysis · Beneficial ownership investigation
Vessel Name
EMMA GRACE
MMSI
538009902
Flag State (MMSI-derived)
🏴 US
MID Code
538 → 🏴 US
Primary Port
Boston
Detection Period
6 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
Within or near physical limits for vessel type
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)