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Primary Mission Areas: Maritime Information: GMDSS About NAVCEN
red triangle Global Positioning System
red triangle Nationwide DGPS
red triangle Long Range Identification and Tracking
red triangle Nationwide AIS (NAIS)
red triangle Local Notice to Mariners
red triangle Light Lists
red triangle Civil GPS Service Interface Committee
red triangle Electronic Navigation & Charting
red triangle LORAN C (archive)
red triangle USCG 'Homeport' Website
red triangle Maritime Telecommunications
red triangle CG Nat'l Distress System
red triangle Global Maritime Distress and Safety System
red triangle Marine Safety Information Broadcasts
red triangle MF & HF Channels
red triangle Nav Pubs and Documents
red triangle Radio Watch Requirements
red triangle Vessel Traffic Services
red triangle VHF Channels & Freqs
red triangle GMDSS Overview
red triangle GMDSS Task Force
red triangle GMDSS Areas of Operation
red triangle GMDSS Systems
red triangle Compliance Requirements
red triangle GMDSS Statistics
red triangle GMDSS Reference Info
red triangle NAVTEX Broadcast Info
red triangle EPIRB Information
red triangle Cancelling False Alerts
red triangle Radio Info For Boaters
red triangle Comms Data Elements
red triangle Maritime Mobile Service IDs
red triangle Frequently Asked Questions
red triangle Return to Telecomms Home
red triangle Inmarsat C SafetyNET
red triangle Mission and Vision Statement
red triangle Contact Us
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Services & Reporting: GPS Local Notice to Mariners Automatic Identification System (AIS)
red triangle Receive Free LNM Updates
red triangle Receive Free GPS Status Messages
red triangle Receive NANU Updates
red triangle Join CGSIC (free)
red triangle Report an ATON Discrepancy or Outage
red triangle Report a GPS Problem
red triangle Report an NDGPS Problem
red triangle Report an LRIT Problem
red triangle Report an NAIS Problem
red triangle Contact Us
red triangle NANUs, Almanacs, & OPS Advisories
red triangle Report a GPS Problem
red triangle GPS Mapping Problems (GPS.gov)
red triangle GPS Service Interruptions
red triangle Subscribe to List Serve Msgs
red triangle General GPS Overview (GPS.gov)
red triangle GPS Modernization
red triangle Space Wx & Precise Ephemeris Data
red triangle GPS Augmentation Systems
red triangle Reference Information
red triangle *** GPS CNAV Testing Data ***
red triangle Frequently Asked Questions (FAQ)
red triangle LNMs by CG District
red triangle LNM Archives
red triangle District Boundaries
red triangle Chart Ordering Info
red triangle Frequently Asked Questions
red triangle LNM List Server Registration
red triangle Light Lists and Corrections
red triangle What is AIS?
red triangle How AIS Works
red triangle Types of AIS
red triangle AIS Messages
red triangle    Class A Position Report
red triangle    Class A Static & Voyage Data
red triangle    Class B Reports
red triangle AIS ATON Report
red triangle Nationwide AIS (NAIS)
red triangle Carriage Requirements
red triangle Reference Information
red triangle    AIS Encoding Guide & LOCODES
red triangle Frequently Asked Questions
Navigation Rules Nav Notes & Information CGSIC Maritime Telecommunications
red triangle CIM16672.2D - Navigation Rules &
Record of Changes
red triangle Navigation Rules Online
red triangle Navigation Regulations by Subject
red triangle Navigation Regulations by Location
red triangle Navigation Rules Flash Cards
red triangle Frequently Asked Questions
red triangle Search Our Site
red triangle Radio Navigation Meetings
red triangle CGSIC General Information
red triangle Join CGSIC
red triangle Maritime Telecommunications
red triangle Automatic Identification Systems (AIS)
red triangle GMDSS
red triangle CG National Distress System
red triangle Digital Selective Calling
red triangle HF Distress Frequencies
red triangle U.S. VHF Channels & Freq
red triangle International VHF Channels and Frequencies
red triangle Electrotechnical Commission
red triangle MF & HF Channels
red triangle International Maritime Organization
red triangle Marine Safety Broadcasts
red triangle Maritime Mobile Service IDs
red triangle Radio Info For Boaters
red triangle Radio Watch Requirements
red triangle Reference Information
MMSI Information International Maritime Org GMDSS Task Force LORAN C (archive)
red triangle USCG Telecommunications
red triangle Automatic Identification Systems (AIS)
red triangle GMDSS Overview
red triangle Comms Data Elements
red triangle IMO Background
red triangle IMO Contact Information
red triangle IMO COMSAR Meeting Information
red triangle IMO SN Circulars
red triangle COLREGS Circulars
red triangle MSC Resolutions
red triangle IMO COM Circulars
red triangle IMO COMSAR Reports
red triangle Maritime Telecommunications
red triangle GMDSS Task Force
red triangle GMDSS Tasking
red triangle GMDSS Information Bulletins
red triangle General GMDSS Documents
red triangle Membership Meetings Calendar
red triangle Summary Records / Newsletters
red triangle GMDSS Home Page
red triangle LORAN-C Termination Status
red triangle LORAN-C Current Status
red triangle Converting TD's to Lat-Long
red triangle Historical Reference Information
Electronic Navigation Nav Pubs, Docs & CG Links Vessel Traffic Services PAWSA
red triangle E-Nav General Information
red triangle Automatic Identification Systems (AIS)
red triangle Radar Beacons (RACONs)
red triangle ERMA-BSB Support
red triangle General Library
red triangle Local Notice to Mariners
red triangle 2014 Light List Volumes
red triangle Vessel Traffic Services
red triangle VTS History
red triangle VTS Locations
red triangle VTS Radio Frequencies
red triangle World VTS Directory
red triangle VTS Radio Procedures
red triangle PAWSS
red triangle PAWSA
red triangle PAWSA Home
red triangle PAWSA Background
red triangle PAWSA Final Reports
red triangle PAWSA Guide
red triangle PAWSA Methodology
Long Range Identificaiton and Tracking Nationwide Differential GPS (NDGPS) Nationwide DGPS Nationwide AIS
red triangle LRIT Home Page
red triangle LRIT Frequently Asked Questions
red triangle LRIT Reference Documents
red triangle LRIT Acronyms and Abbreviations
red triangle LRIT Report a Problem Page
red triangle LRIT Conformance Test Scheduling
red triangle Nationwide DGPS
red triangle NDGPS Site Information and Operating Specifications
red triangle Current NDGPS Site Outages
red triangle Report an NDGPS Problem
red triangle Canadian DGPS Status Info
red triangle Reference Information
red triangle Nationwide DGPS
red triangle NDGPS Site Configuration
red triangle Current Expansion Projects
red triangle NDGPS Planned Sites
red triangle Network Enhancements Paper
red triangle NDGPS Executive Steering Council
red triangle NDGPS Status
red triangle Nationwide DGPS
red triangle Nationwide AIS (NAIS)
red triangle AIS vs NAIS
red triangle NAIS Expansion
red triangle Report an NAIS Problem
red triangle NAIS Data Formats
red triangle NAIS HDR Delivery Methods
red triangle Request NAIS Data
Public Notices For Bridges International Ice Patrol (IIP) IIP History Oceanography
red triangle Active Public Notices - Bridges
red triangle Expired Public Notices - Bridges
red triangle PNB Archives
red triangle About IIP
red triangle Products
red triangle Annual Reports
red triangle Public Affairs
red triangle History
red triangle Oceanography
red triangle Contact Us
red triangle About North American Ice Service
red triangle History
red triangle From Sea, To Air, To Space
red triangle Seek and Destroy
red triangle Life and Property
red triangle Previous Commanders
red triangle Iceberg Counts
red triangle The Greenland Patrol
red triangle Surviving Disaster
red triangle Return to IIP Home Page
red triangle Oceanography
red triangle Currents
red triangle Weather
red triangle Icebergs and Sea Ice
red triangle Historical Perspective
red triangle Oceanography and Weather
red triangle Return to IIP Home Page
Icebergs and Sea Ice Request NAIS Data Light Lists North American Ice Service
red triangle Icebergs
red triangle Iceberg Locations
red triangle Iceberg Formation
red triangle Sea Ice
red triangle Return to Oceanography Main Page
red triangle Historical Data Request Form
red triangle Data Feed Request Form
red triangle Return to NAIS Main Page
red triangle NAIS Data Formats
red triangle NAIS HDR Delivery Methods
red triangle 2014 Light List Volumes
red triangle Light List Corrections
red triangle Light List Files - Weekly Updates
red triangle About North American Ice Service
red triangle    International Ice Patrol (IIIP)
red triangle    Canadian Ice Service (CIS)
red triangle    National Ice Center (NIC)
red triangle Products
red triangle Contact Us
Digital Selective Calling DSC Proceedures For Ships    
red triangle About Digital Selective Calling
red triangle Special Notices and Alerts
red triangle DSC Classes
red triangle DSC Issues
red triangle DSC Standards
red triangle DSC Procedures For Ships
red triangle Join Discussion Forum
red triangle DSC Distress
red triangle DSC Urgency
red triangle DSC Safety
red triangle DSC Public Correspondence
red triangle DSC Testing
red triangle DSC Conditions
red triangle About Digital Selective Calling