Intelligence Overview
HENRY B BIGELOW · MMSI 369991000 · 🇺🇸 US · Primary Port: Boston
PERIOD: JAN–DEC 2024
Global Rank
#104
of 69,461 vessels
Composite Score
0.9500
CRITICAL
Total Detections
168
Months Active
12/12
Unique Ports
8
Dark Events
10
AIS blackout
Position Jumps
2
GPS spoofing
Max Jump
680km
Monthly Detection Volume
2024 MONTHLY DETECTIONS
Alert Type Distribution
Key Intelligence Findings
AIS Blackout Confirmed — 10 Events
Deliberate AIS transponder deactivation detected. Each event represents a period where HENRY B BIGELOW was operating outside electronic surveillance. Consistent with covert cargo transfer or evasion operations.
GPS Spoofing — 2 Position Jumps
AIS coordinates fabricated at impossible locations. Maximum jump of 680 km confirms the AIS transmitter is broadcasting false positions. Systematic identity concealment is in progress.
Evasion Navigation — 73 Zigzag Events
Erratic course-over-ground patterns up to 200.3° 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 | 2 | CRITICAL | 0.9000 | Boston | ZIGZAG |
| February 2024 | 9 | MEDIUM | 0.7184 | Boston | ZIGZAG; DARK_VESSEL |
| March 2024 | 19 | MEDIUM | 0.6997 | Boston | ZIGZAG; DARK_VESSEL |
| April 2024 | 24 | MEDIUM | 0.7392 | New York | DARK_VESSEL; ZIGZAG |
| May 2024 | 17 | HIGH | 0.7907 | Boston | DARK_VESSEL; ZIGZAG |
| June 2024 | 19 | HIGH | 0.7692 | Boston | ZIGZAG; DARK_VESSEL |
| July 2024 | 13 | HIGH | 0.7994 | Philadelphia | ZIGZAG; DARK_VESSEL |
| August 2024 | 14 | HIGH | 0.7713 | Boston | ZIGZAG; DARK_VESSEL |
| September 2024 | 20 | MEDIUM | 0.7008 | Boston | ZIGZAG; DARK_VESSEL |
| October 2024 | 18 | HIGH | 0.7649 | Boston | ZIGZAG; DARK_VESSEL |
| November 2024 | 11 | MEDIUM | 0.7252 | Halifax | DARK_VESSEL; ZIGZAG |
| December 2024 | 2 | CRITICAL | 0.9500 | Norfolk | 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 | 10 events detected | CRITICAL |
| GPS Spoofing / Position Jump | CONFIRMED | 2 jumps · max 679.6km | CRITICAL |
| Velocity Fraud / Speed Anomaly | NOT DETECTED | — | LOW |
| Evasion Navigation / Zigzag | CONFIRMED | 73 events · max COG std 200.3° | HIGH |
| Ship-to-Ship Rendezvous | NOT DETECTED | — | LOW |
| Multi-Port Operations | CONFIRMED | 8 unique ports | HIGH |
Operational Profile
Primary AO
Boston and surrounding maritime zone
Active Period
12 months of continuous alert activity in 2024
Alert Density
168 detections across 85 individual events (avg 14.0/month)
Active Techniques
⟳ ZIGZAG ◐ DARK ⊕ POS JUMP
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 200.3°). Consistent with surveillance evasion or at-anchor AIS manipulation. Count: 73 events.
HIGH CONFIDENCE
73 events
73 events
MAR-T004
AIS-MAN-001
AIS Blackout
Deliberate AIS transponder deactivation to create surveillance gaps. Count: 10 events. Each event represents an unmonitored operational window.
HIGH CONFIDENCE
10 events
10 events
MAR-T002
AIS-MAN-003
GPS Spoofing
GPS coordinate spoofing — AIS positions fabricated at impossible locations. Max jump: 679.6km. Implies deliberate identity concealment. Count: 2 events.
HIGH CONFIDENCE
2 events
2 events
Risk Analysis
Composite risk scoring · Weighted indicator model · Quantus v2.4
Composite Score
0.9500
CRITICAL
Avg Detection Score
0.7774
Global Rank
#104
of 69,461 vessels
Weighted Indicator Scoring
| Indicator | Count | Weight | Contribution |
|---|---|---|---|
| DARK_VESSEL | 10 | ×3 | 30.0 |
| RENDEZVOUS | 0 | ×4 | 0.0 |
| POSITION_JUMP | 2 | ×2 | 4.0 |
| SPEED_ANOMALY | 0 | ×1 | 0.0 |
| ZIGZAG | 73 | ×0.5 | 36.5 |
| MaxSingleScore | 0.9500 | ×50 | 47.5 |
| COMPOSITE TOTAL | Normalized [0,1] | 0.9500 CRITICAL | |
⊕ Position Jump Detections
Indicator: AIS-MAN-003 · 2 events · Max jump: 680 km
Total Events
2
Max Jump Distance
680 km
Indicator ID
AIS-MAN-003
Position Jump Events (Top 50 by distance)
| Date | Jump (km) | Implied Speed (kn) | Score | Severity | Spoofed-To Port | Coordinates |
|---|
⟳ Zigzag / Erratic Navigation
Indicator: RTE-ANO-005 · 73 events · Max COG std: 200.3°
Total Events
73
Max COG Std Dev
200.3°
Threshold
50°
Zigzag Events (Top 50 by COG deviation)
| Date | COG Std Dev (°) | Score | Severity | Port | Coordinates |
|---|
◐ Dark Vessel Events
Indicator: AIS-MAN-001 · 10 AIS blackout events detected
Dark Vessel Events
10
Indicator
AIS-MAN-001
Risk Level
CRITICAL
◐ DARK EVENT #1 — 2024-02-19T13:47:31
AIS BLACKOUT
Location
41.0687°N, 71.4312°W — Boston
AIS Gap Duration
7.0 hours
Pre-Blackout Speed
11.1 knots SOG
Displacement
79.1 NM from port during gap
Score
0.5549 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #2 — 2024-03-21T06:00:07
AIS BLACKOUT
Location
40.1283°N, 73.8534°W — New York
AIS Gap Duration
6.3 hours
Pre-Blackout Speed
4.4 knots SOG
Displacement
34.8 NM from port during gap
Score
0.5194 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #3 — 2024-04-02T14:31:39
AIS BLACKOUT
Location
39.3323°N, 72.3639°W — New York
AIS Gap Duration
6.3 hours
Pre-Blackout Speed
5.4 knots SOG
Displacement
112.3 NM from port during gap
Score
0.5457 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #4 — 2024-04-11T08:15:34
AIS BLACKOUT
Location
40.2902°N, 68.2718°W — Boston
AIS Gap Duration
8.6 hours
Pre-Blackout Speed
2.8 knots SOG
Displacement
176.1 NM from port during gap
Score
0.5945 · LOW
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #5 — 2024-04-26T08:05:28
AIS BLACKOUT
Location
40.4587°N, 67.7488°W — Boston
AIS Gap Duration
9.1 hours
Pre-Blackout Speed
2.9 knots SOG
Displacement
187.1 NM from port during gap
Score
0.5899 · LOW
Assessment
Near-stationary approach before blackout — possible rendezvous/transfer signature.
◐ DARK EVENT #6 — 2024-04-28T08:41:11
AIS BLACKOUT
Location
41.5797°N, 66.5085°W — Portland ME
AIS Gap Duration
6.9 hours
Pre-Blackout Speed
3.3 knots SOG
Displacement
207.4 NM from port during gap
Score
0.5412 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #7 — 2024-10-13T00:14:32
AIS BLACKOUT
Location
41.0405°N, 68.4199°W — Boston
AIS Gap Duration
11.7 hours
Pre-Blackout Speed
6.7 knots SOG
Displacement
141.8 NM from port during gap
Score
0.6433 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #8 — 2024-10-17T05:41:36
AIS BLACKOUT
Location
41.3847°N, 67.4335°W — Boston
AIS Gap Duration
11.0 hours
Pre-Blackout Speed
3.4 knots SOG
Displacement
171.7 NM from port during gap
Score
0.6359 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #9 — 2024-11-01T06:08:40
AIS BLACKOUT
Location
42.2794°N, 65.9099°W — Halifax
AIS Gap Duration
6.1 hours
Pre-Blackout Speed
10.4 knots SOG
Displacement
174.8 NM from port during gap
Score
0.5119 · LOW
Assessment
AIS gap consistent with deliberate concealment.
◐ DARK EVENT #10 — 2024-11-03T01:03:07
AIS BLACKOUT
Location
43.3239°N, 67.3978°W — Portland ME
AIS Gap Duration
8.2 hours
Pre-Blackout Speed
11.6 knots SOG
Displacement
126.1 NM from port during gap
Score
0.5679 · LOW
Assessment
AIS gap consistent with deliberate concealment.
Port History
8 distinct port areas · US primary flag state
Complete Port Detection Summary
| Port | Country | Detections | Avg Score | Avg Dist NM | Risk |
|---|---|---|---|---|---|
| Boston | 🇺🇸 | 48 | 0.8232 | 84.3 | STANDARD |
| New York | 🇺🇸 | 9 | 0.7393 | 79.2 | STANDARD |
| Norfolk | 🇺🇸 | 8 | 0.8935 | 74.0 | STANDARD |
| Portland ME | 🇺🇸 | 8 | 0.7668 | 115.2 | STANDARD |
| Philadelphia | 🇺🇸 | 6 | 0.8950 | 83.7 | STANDARD |
| Halifax | 🇨🇦 | 4 | 0.7369 | 186.5 | STANDARD |
| Wilmington NC | 🇺🇸 | 1 | 0.9000 | 122.3 | STANDARD |
| Saint John | 🇨🇦 | 1 | 0.9000 | 90.0 | STANDARD |
🇺🇸 Boston — Port Profile
48 detections · Avg score 0.8232 · Avg distance 84.3 NM
Total Detections
48
Primary port of operation
Avg Alert Score
0.8232
Avg Distance NM
84.3
Port proximity zone
Detection Types at Boston
Coordinates: 42.358°N, 71.051°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
48 of 85 total detections (56.5%)
Avg Distance from Port
84.3 NM — consistent with port proximity operations
🇺🇸 New York — Port Profile
9 detections · Avg score 0.7393 · Avg distance 79.2 NM
Total Detections
9
Secondary port
Avg Alert Score
0.7393
Avg Distance NM
79.2
Port proximity zone
Detection Types at New York
Coordinates: 40.661°N, 74.044°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
9 of 85 total detections (10.6%)
Avg Distance from Port
79.2 NM — consistent with port proximity operations
🇺🇸 Norfolk — Port Profile
8 detections · Avg score 0.8935 · Avg distance 74.0 NM
Total Detections
8
Secondary port
Avg Alert Score
0.8935
Avg Distance NM
74.0
Port proximity zone
Detection Types at Norfolk
Coordinates: 36.847°N, 76.293°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
8 of 85 total detections (9.4%)
Avg Distance from Port
74.0 NM — consistent with port proximity operations
🇺🇸 Portland ME — Port Profile
8 detections · Avg score 0.7668 · Avg distance 115.2 NM
Total Detections
8
Secondary port
Avg Alert Score
0.7668
Avg Distance NM
115.2
Port proximity zone
Detection Types at Portland ME
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
8 of 85 total detections (9.4%)
Avg Distance from Port
115.2 NM — consistent with port proximity operations
🇺🇸 Philadelphia — Port Profile
6 detections · Avg score 0.8950 · Avg distance 83.7 NM
Total Detections
6
Secondary port
Avg Alert Score
0.8950
Avg Distance NM
83.7
Port proximity zone
Detection Types at Philadelphia
Coordinates: 39.952°N, 75.144°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
6 of 85 total detections (7.1%)
Avg Distance from Port
83.7 NM — consistent with port proximity operations
🇨🇦 Halifax — Port Profile
4 detections · Avg score 0.7369 · Avg distance 186.5 NM
Total Detections
4
Secondary port
Avg Alert Score
0.7369
Avg Distance NM
186.5
Port proximity zone
Detection Types at Halifax
Coordinates: 44.651°N, 63.582°W
Port Intelligence Notes
Port Country
🇨🇦 CA
Risk Classification
LOW — Standard port monitoring applies
Detection Share
4 of 85 total detections (4.7%)
Avg Distance from Port
186.5 NM — consistent with port proximity operations
🇺🇸 Wilmington NC — Port Profile
1 detections · Avg score 0.9000 · Avg distance 122.3 NM
Total Detections
1
Secondary port
Avg Alert Score
0.9000
Avg Distance NM
122.3
Port proximity zone
Detection Types at Wilmington NC
Coordinates: 34.235°N, 77.948°W
Port Intelligence Notes
Port Country
🇺🇸 US
Risk Classification
LOW — Standard port monitoring applies
Detection Share
1 of 85 total detections (1.2%)
Avg Distance from Port
122.3 NM — consistent with port proximity operations
🇨🇦 Saint John — Port Profile
1 detections · Avg score 0.9000 · Avg distance 90.0 NM
Total Detections
1
Secondary port
Avg Alert Score
0.9000
Avg Distance NM
90.0
Port proximity zone
Detection Types at Saint John
Coordinates: 45.274°N, 66.063°W
Port Intelligence Notes
Port Country
🇨🇦 CA
Risk Classification
LOW — Standard port monitoring applies
Detection Share
1 of 85 total detections (1.2%)
Avg Distance from Port
90.0 NM — consistent with port proximity operations
Ownership Intelligence
MMSI registry · Flag state analysis · Beneficial ownership investigation
Vessel Name
HENRY B BIGELOW
MMSI
369991000
Flag State (MMSI-derived)
🇺🇸 US
MID Code
369 → 🇺🇸 US
Primary Port
Boston
Detection Period
12 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
INCONSISTENT — year-round multi-port operations with 168 anomalous events are not consistent with pleasure craft use
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)