#47 TIDEWATER // Vessel Intelligence System

Intelligence Overview

TIDEWATER · MMSI 367573920 · 🇺🇸 US · Primary Port: Norfolk

PERIOD: JAN–DEC 2024

⚠ INTELLIGENCE ASSESSMENT: TIDEWATER ranks #47 of 69,461 monitored vessels with 232 anomalous detections across 12 months. Composite risk score: 0.9500 (CRITICAL). Active alert types: POSITION_JUMP, ZIGZAG, SPEED_ANOMALY.

Global Rank

#47

of 69,461 vessels

Composite Score

0.9500

CRITICAL

Total Detections

232

Months Active

12/12

Unique Ports

1

Position Jumps

2

GPS spoofing

Speed Anomalies

65

Max Speed

102.2 kn

Max Jump

382km

Monthly Detection Volume

1
15

10
23

11
21

12
18

2
27

3
16

4
14

2024 MONTHLY DETECTIONS

Alert Type Distribution

ZIGZAG

67

SPEED_ANOMALY

65

POSITION_JUMP

2

Key Intelligence Findings

GPS Spoofing — 2 Position Jumps

AIS coordinates fabricated at impossible locations. Maximum jump of 382 km confirms the AIS transmitter is broadcasting false positions. Systematic identity concealment is in progress.

Velocity Fraud — 65 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 — 67 Zigzag Events

Erratic course-over-ground patterns up to 182.7° std deviation, far exceeding the 50° anomaly threshold. Pattern consistent with surveillance evasion maneuvers or anchor position AIS noise.

Port Detection Summary

🇺🇸

Norfolk

134

avg 0.873

Monthly Alert Log — All Months

Month	Detections	Severity	Score	Nearest Port	Alert Types
January 2024	15	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
February 2024	27	HIGH	0.8662	Norfolk	SPEED_ANOMALY; ZIGZAG; POSITION_JUMP
March 2024	16	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
April 2024	14	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
May 2024	12	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
June 2024	27	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
July 2024	28	CRITICAL	0.9492	Norfolk	POSITION_JUMP; SPEED_ANOMALY; ZIGZAG
August 2024	11	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
September 2024	20	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
October 2024	23	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; ZIGZAG
November 2024	21	HIGH	0.8925	Norfolk	SPEED_ANOMALY; ZIGZAG; POSITION_JUMP
December 2024	18	CRITICAL	0.9500	Norfolk	SPEED_ANOMALY; 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	NOT DETECTED	—	LOW
GPS Spoofing / Position Jump	CONFIRMED	2 jumps · max 381.6km	CRITICAL
Velocity Fraud / Speed Anomaly	CONFIRMED	65 events · max 102.2 kn	CRITICAL
Evasion Navigation / Zigzag	CONFIRMED	67 events · max COG std 182.7°	HIGH
Ship-to-Ship Rendezvous	NOT DETECTED	—	LOW
Multi-Port Operations	POSSIBLE	1 unique ports	MEDIUM

Operational Profile

Primary AO

Norfolk and surrounding maritime zone

Active Period

12 months of continuous alert activity in 2024

Alert Density

232 detections across 134 individual events (avg 19.3/month)

Active Techniques

⊕ POS JUMP ⟳ ZIGZAG ⚡ 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 182.7°). Consistent with surveillance evasion or at-anchor AIS manipulation. Count: 67 events.

HIGH CONFIDENCE
67 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: 65 events.

HIGH CONFIDENCE
65 events

MAR-T002

AIS-MAN-003

GPS Spoofing

GPS coordinate spoofing — AIS positions fabricated at impossible locations. Max jump: 381.6km. Implies deliberate identity concealment. Count: 2 events.

HIGH CONFIDENCE
2 events

Risk Analysis

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

Composite Score

0.9500

CRITICAL

Avg Detection Score

0.9382

Global Rank

#47

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	0	×3	0.0
RENDEZVOUS	0	×4	0.0
POSITION_JUMP	2	×2	4.0
SPEED_ANOMALY	65	×1	65.0
ZIGZAG	67	×0.5	33.5
MaxSingleScore	0.9500	×50	47.5
COMPOSITE TOTAL	Normalized [0,1]		0.9500 CRITICAL

⚡ Speed Anomaly Detections

Indicator: RTE-ANO-001 · 65 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. TIDEWATER reports speeds up to 102.2 kn — consistent with deliberate AIS SOG field manipulation to corrupt tracking algorithms.

Total Events

65

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

⊕ Position Jump Detections

Indicator: AIS-MAN-003 · 2 events · Max jump: 382 km

GPS SPOOFING

Position jumps confirm GPS coordinate spoofing — AIS positions fabricated at impossible locations. TIDEWATER has 2 confirmed position jumps with maximum displacement of 382 km.

Total Events

2

Max Jump Distance

382 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 · 67 events · Max COG std: 182.7°

EVASION PATTERN

Zigzag events are triggered when course-over-ground (COG) standard deviation exceeds 50°. TIDEWATER records COG deviations up to 182.7° — consistent with surveillance evasion maneuvers or at-anchor AIS noise manipulation.

Total Events

67

Max COG Std Dev

182.7°

Threshold

50°

Zigzag Events (Top 50 by COG deviation)

Date	COG Std Dev (°)	Score	Severity	Port	Coordinates

Port History

1 distinct port areas · US primary flag state

Complete Port Detection Summary

Port	Country	Detections	Avg Score	Avg Dist NM	Risk
Norfolk	🇺🇸	134	0.8734	35.6	STANDARD

🇺🇸 Norfolk — Port Profile

134 detections · Avg score 0.8734 · Avg distance 35.6 NM

LOW RISK

Total Detections

134

Primary port of operation

Avg Alert Score

0.8734

Avg Distance NM

35.6

Port proximity zone

Detection Types at Norfolk

ZIGZAG

67

SPEED_ANOMALY

65

POSITION_JUMP

2

Coordinates: 36.847°N, 76.293°W

Port Intelligence Notes

Port Country

🇺🇸 US

Risk Classification

LOW — Standard port monitoring applies

Detection Share

134 of 134 total detections (100.0%)

Avg Distance from Port

35.6 NM — consistent with port proximity operations

Ownership Intelligence

MMSI registry · Flag state analysis · Beneficial ownership investigation

Vessel Name

TIDEWATER

MMSI

367573920

Flag State (MMSI-derived)

🇺🇸 US

MID Code

367 → 🇺🇸 US

Primary Port

Norfolk

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 232 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)