#158 BROOKE CHAPMAN // Vessel Intelligence System

Intelligence Overview

BROOKE CHAPMAN · MMSI 367449870 · 🇺🇸 US · Primary Port: Pearl Harbor

PERIOD: JAN–DEC 2024

⚠ INTELLIGENCE ASSESSMENT: BROOKE CHAPMAN ranks #158 of 69,461 monitored vessels with 131 anomalous detections across 12 months. Composite risk score: 0.9500 (CRITICAL). Active alert types: ZIGZAG, DARK_VESSEL, SPEED_ANOMALY.

Global Rank

#158

of 69,461 vessels

Composite Score

0.9500

CRITICAL

Total Detections

131

Months Active

12/12

Unique Ports

2

Dark Events

5

AIS blackout

Speed Anomalies

1

Max Speed

102.2 kn

Monthly Detection Volume

1
13

10
3

11
12

12
10

2
14

3
16

4
8

2024 MONTHLY DETECTIONS

Alert Type Distribution

ZIGZAG

70

DARK_VESSEL

5

SPEED_ANOMALY

1

Key Intelligence Findings

AIS Blackout Confirmed — 5 Events

Deliberate AIS transponder deactivation detected. Each event represents a period where BROOKE CHAPMAN 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 102.2 knots. Systematic falsification of movement data to corrupt automated tracking algorithms.

Evasion Navigation — 70 Zigzag Events

Erratic course-over-ground patterns up to 153.3° std deviation, far exceeding the 50° anomaly threshold. Pattern consistent with surveillance evasion maneuvers or anchor position AIS noise.

Port Detection Summary

🇺🇸

Honolulu

49

avg 0.710

🇺🇸

Pearl Harbor

27

avg 0.706

Monthly Alert Log — All Months

Month	Detections	Severity	Score	Nearest Port	Alert Types
January 2024	13	MEDIUM	0.7491	Pearl Harbor	ZIGZAG; DARK_VESSEL
February 2024	14	HIGH	0.7822	Pearl Harbor	ZIGZAG; DARK_VESSEL
March 2024	16	HIGH	0.8873	Honolulu	ZIGZAG
April 2024	8	CRITICAL	0.9500	Honolulu	ZIGZAG; SPEED_ANOMALY
May 2024	12	CRITICAL	0.9500	Pearl Harbor	ZIGZAG; SPEED_ANOMALY
June 2024	9	CRITICAL	0.9500	Pearl Harbor	ZIGZAG; SPEED_ANOMALY
July 2024	13	CRITICAL	0.9000	Pearl Harbor	ZIGZAG
August 2024	15	CRITICAL	0.9000	Pearl Harbor	ZIGZAG
September 2024	6	CRITICAL	0.9000	Pearl Harbor	ZIGZAG
October 2024	3	CRITICAL	0.9000	Pearl Harbor	ZIGZAG
November 2024	12	MEDIUM	0.7192	Honolulu	ZIGZAG; DARK_VESSEL
December 2024	10	CRITICAL	0.9000	Honolulu	ZIGZAG

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	CONFIRMED	1 events · max 102.2 kn	CRITICAL
Evasion Navigation / Zigzag	CONFIRMED	70 events · max COG std 153.3°	HIGH
Ship-to-Ship Rendezvous	NOT DETECTED	—	LOW
Multi-Port Operations	POSSIBLE	2 unique ports	MEDIUM

Operational Profile

Primary AO

Pearl Harbor and surrounding maritime zone

Active Period

12 months of continuous alert activity in 2024

Alert Density

131 detections across 76 individual events (avg 10.9/month)

Active Techniques

⟳ ZIGZAG ◐ DARK ⚡ SPEED

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 153.3°). Consistent with surveillance evasion or at-anchor AIS manipulation. Count: 70 events.

HIGH CONFIDENCE
70 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

MAR-T001

RTE-ANO-001

Velocity Fraud

AIS SOG field manipulation to broadcast impossible speeds up to 102.2 kn. Corrupts automated tracking algorithms and creates false movement vectors. Count: 1 events.

HIGH CONFIDENCE
1 events

Risk Analysis

Composite risk scoring · Weighted indicator model · Quantus v2.4

Composite Score

0.9500

CRITICAL

Avg Detection Score

0.8740

Global Rank

#158

of 69,461 vessels

Weighted Indicator Scoring

Formula: (Dark×3) + (Rendezvous×4) + (PosJump×2) + (Speed×1) + (Zigzag×0.5) + (MaxScore×50)

Indicator	Count	Weight	Contribution
DARK_VESSEL	5	×3	15.0
RENDEZVOUS	0	×4	0.0
POSITION_JUMP	0	×2	0.0
SPEED_ANOMALY	1	×1	1.0
ZIGZAG	70	×0.5	35.0
MaxSingleScore	0.9500	×50	47.5
COMPOSITE TOTAL	Normalized [0,1]		0.9500 CRITICAL

⚡ Speed Anomaly Detections

Indicator: RTE-ANO-001 · 1 events · Max: 102.2 kn

AIS SOG FRAUD

Speed anomaly events are triggered when AIS Speed Over Ground (SOG) exceeds the 30-knot detection threshold. BROOKE CHAPMAN reports speeds up to 102.2 kn — consistent with deliberate AIS SOG field manipulation to corrupt tracking algorithms.

Total Events

1

Max Reported SOG

102.2 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 · 70 events · Max COG std: 153.3°

EVASION PATTERN

Zigzag events are triggered when course-over-ground (COG) standard deviation exceeds 50°. BROOKE CHAPMAN records COG deviations up to 153.3° — consistent with surveillance evasion maneuvers or at-anchor AIS noise manipulation.

Total Events

70

Max COG Std Dev

153.3°

Threshold

50°

Zigzag Events (Top 50 by COG deviation)

Date	COG Std Dev (°)	Score	Severity	Port	Coordinates

◐ Dark Vessel Events

Indicator: AIS-MAN-001 · 5 AIS blackout events detected

AIS BLACKOUT

⚠ HIGH SIGNIFICANCE: Dark vessel events represent deliberate AIS transponder deactivation — a primary indicator of intentional surveillance evasion, covert cargo transfer, or sanctions circumvention.

Dark Vessel Events

5

Indicator

AIS-MAN-001

Risk Level

CRITICAL

◐ DARK EVENT #1 — 2024-01-19T03:54:54

AIS BLACKOUT

Location

19.7813°N, 155.0355°W — Honolulu

AIS Gap Duration

11.5 hours

Pre-Blackout Speed

3.9 knots SOG

Displacement

183.2 NM from port during gap

Score

0.6133 · LOW

Assessment

AIS gap consistent with deliberate concealment.

◐ DARK EVENT #2 — 2024-02-11T08:52:12

AIS BLACKOUT

Location

19.8116°N, 155.0521°W — Honolulu

AIS Gap Duration

14.8 hours

Pre-Blackout Speed

6.4 knots SOG

Displacement

181.5 NM from port during gap

Score

0.6761 · MEDIUM

Assessment

AIS gap consistent with deliberate concealment.

◐ DARK EVENT #3 — 2024-02-21T05:23:01

AIS BLACKOUT

Location

19.8019°N, 155.0480°W — Honolulu

AIS Gap Duration

9.9 hours

Pre-Blackout Speed

5.3 knots SOG

Displacement

182.0 NM from port during gap

Score

0.5799 · LOW

Assessment

AIS gap consistent with deliberate concealment.

◐ DARK EVENT #4 — 2024-11-19T07:01:08

AIS BLACKOUT

Location

20.6760°N, 156.9683°W — Honolulu

AIS Gap Duration

7.1 hours

Pre-Blackout Speed

4.5 knots SOG

Displacement

62.6 NM from port during gap

Score

0.5507 · LOW

Assessment

AIS gap consistent with deliberate concealment.

◐ DARK EVENT #5 — 2024-11-25T11:17:00

AIS BLACKOUT

Location

19.8126°N, 155.0550°W — Honolulu

AIS Gap Duration

8.8 hours

Pre-Blackout Speed

6.2 knots SOG

Displacement

181.3 NM from port during gap

Score

0.5565 · 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
Honolulu	🇺🇸	49	0.7104	81.4	STANDARD
Pearl Harbor	🇺🇸	27	0.7061	14.5	STANDARD

🇺🇸 Honolulu — Port Profile

49 detections · Avg score 0.7104 · Avg distance 81.4 NM

LOW RISK

Total Detections

49

Primary port of operation

Avg Alert Score

0.7104

Avg Distance NM

81.4

Port proximity zone

Detection Types at Honolulu

ZIGZAG

44

DARK_VESSEL

5

Port Intelligence Notes

Port Country

🇺🇸 US

Risk Classification

LOW — Standard port monitoring applies

Detection Share

49 of 76 total detections (64.5%)

Avg Distance from Port

81.4 NM — consistent with port proximity operations

🇺🇸 Pearl Harbor — Port Profile

27 detections · Avg score 0.7061 · Avg distance 14.5 NM

LOW RISK

Total Detections

27

Secondary port

Avg Alert Score

0.7061

Avg Distance NM

14.5

Port proximity zone

Detection Types at Pearl Harbor

ZIGZAG

26

SPEED_ANOMALY

1

Port Intelligence Notes

Port Country

🇺🇸 US

Risk Classification

LOW — Standard port monitoring applies

Detection Share

27 of 76 total detections (35.5%)

Avg Distance from Port

14.5 NM — consistent with port proximity operations

Ownership Intelligence

MMSI registry · Flag state analysis · Beneficial ownership investigation

Vessel Name

BROOKE CHAPMAN

MMSI

367449870

Flag State (MMSI-derived)

🇺🇸 US

MID Code

367 → 🇺🇸 US

Primary Port

Pearl Harbor

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 131 anomalous events are not consistent with pleasure craft use

Speed Capability

Reported 102.2 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)