Vessel Traffic Data and Analysis - PowerPoint PPT Presentation

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Vessel Traffic Data and Analysis
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Vessel Traffic Data and Analysis

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  1. Vessel Traffic Data and Analysis

  2. What is AIS? • Automated Identification System (AIS) • Vessel Identification and Tracking System – Based on GPS and VHF Broadcasting • Required on all Vessels over 300 GT • (1) Provides Situational Awareness in Real Time (collision avoidance etc.) • (2) Collected data produces a historical archive of Vessel Traffic for the Entire Coast.

  3. NAIS Overview

  4. Shipboard AIS

  5. AIS Analysis Input Data • AIS Returns for 2009 • Monthly Data for Atlantic – Maine to Florida • Each Month is Clipped by Protraction, then Merged • AIS Analysis Input Includes all Months for 2009 • June is missing 25 days of data for 2009

  6. AIS returns – January 2009

  7. AIS returns – Vessel Data

  8. AIS returns – Vessel Data

  9. AIS returns – January 2009

  10. AIS returns – All Months 2009

  11. AIS returns – July 2009

  12. AIS returns – All Months 2009

  13. Vessel Speed and AIS Point Density

  14. AIS Density Mapping • Quantify unique vessels (MMSI) passing through each leasing unit (aliquot) per year. • Extract deep draft vessel types for depicting traffic volume for larger vessels. • Other mapping includes avg. vessel time in aliquot, avg. speed, etc.

  15. OCS Blocks – 2.6nm x 2.6nm, Aliquots (sub-blocks) - .65nm x .65nm

  16. Filtering by Date to Remove Duplicate Returns

  17. Extracting Vessels by Deep Draft Type • Cargo Vessels, Tankers, Tugs, Towing, Towing > 200m • Comparison of unique traffic patterns by type. • Maps use a more sensitive color scale to display lower volume types.

  18. Vessel Traffic Data and Analysis