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ENC Data Status

The ENC Status page provides real-time information about Electronic Navigational Chart data availability, update schedules, and service status across different regions and data providers.

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Understanding ENC Data

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What is ENC Data?

Electronic Navigational Charts (ENCs) are official digital charts issued by national hydrographic offices worldwide. CHRT aggregates and serves this data through a unified API.

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Data Sources

CHRT integrates with multiple authoritative sources:
  • National Hydrographic Offices: Primary official sources
  • Regional Charting Authorities: Local maritime authorities
  • International Organizations: IMO and IHO standardized data
  • Commercial Providers: Licensed chart data distributors

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Status Monitoring

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Service Status Indicators

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Operational ✅

  • All systems functioning normally
  • Data updates processing on schedule
  • No known issues affecting availability

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Partial Service ⚠️

  • Some regions may have delayed updates
  • Reduced redundancy but service available
  • Minor issues under investigation

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Maintenance 🔧

  • Scheduled maintenance in progress
  • Service may be temporarily limited
  • Updates will resume after maintenance

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Degraded Performance ⚠️

  • Slower response times than normal
  • Some features may be limited
  • Engineering team actively working on resolution

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Service Disruption ❌

  • Significant service interruption
  • Chart data may be unavailable
  • Priority resolution in progress

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Regional Status

Monitor data availability by geographic region:
  • North America: US, Canada, Mexico coastal waters
  • Europe: European waters, Baltic, Mediterranean
  • Asia Pacific: Australia, Japan, Southeast Asia
  • Global Ocean: International waters and major shipping routes

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Data Update Schedule

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Update Frequencies

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Critical Navigation Areas

  • Update Frequency: Weekly
  • Coverage: Major ports, shipping lanes, high-traffic areas
  • Sources: Multiple hydrographic offices
  • Priority: Highest - safety critical updates

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Coastal Waters

  • Update Frequency: Bi-weekly
  • Coverage: National coastal waters and approaches
  • Sources: National hydrographic offices
  • Priority: High - commercial navigation

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Open Ocean

  • Update Frequency: Monthly
  • Coverage: International waters, remote areas
  • Sources: International charting organizations
  • Priority: Standard - general navigation

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Specialized Charts

  • Update Frequency: As available
  • Coverage: Specialized nautical information
  • Sources: Various maritime authorities
  • Priority: Variable - depends on chart type

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Planned Updates

View upcoming data refreshes:
  • Next Update: Date and time of next scheduled refresh
  • Affected Regions: Geographic areas included in update
  • Expected Changes: Types of updates (safety, infrastructure, corrections)
  • Estimated Duration: How long the update process will take

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Data Quality Metrics

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Chart Coverage

  • Total Charts Available: Number of individual ENC cells
  • Geographic Coverage: Square kilometers of water area covered
  • Chart Scales: Range from harbor charts to ocean charts
  • Last Full Refresh: When complete dataset was last updated

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Data Freshness

  • Average Age: How current the chart data is on average
  • Oldest Chart: Date of least recently updated chart
  • Update Success Rate: Percentage of successful data updates
  • Processing Time: Average time from source update to API availability

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Troubleshooting Data Issues

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Common Issues

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Missing Chart Data

Symptoms: No chart tiles loading in specific areas Causes:
  • Regional data source temporarily unavailable
  • Update process in progress
  • Geographic area not covered by available ENCs
Resolution:
  1. Check ENC Status page for known issues
  2. Verify geographic coordinates are within covered areas
  3. Try again after scheduled update completion
  4. Contact support if issue persists

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Outdated Information

Symptoms: Chart data appears old or incorrect Causes:
  • Source hydrographic office hasn’t issued updates
  • Update process delayed
  • Caching showing stale data
Resolution:
  1. Check “Last Updated” timestamp for affected region
  2. Clear any local caches
  3. Report suspected data quality issues to support

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Slow Loading

Symptoms: Chart tiles load slowly or timeout Causes:
  • High demand during peak hours
  • Regional server maintenance
  • Network connectivity issues
Resolution:
  1. Check Status page for performance alerts
  2. Implement client-side caching
  3. Use appropriate timeout settings
  4. Consider load balancing across regions

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Reporting Issues

When reporting ENC data issues, please include:
  • Geographic Location: Latitude/longitude or chart area
  • Issue Description: What’s wrong or missing
  • Expected Behavior: What should be displayed
  • Screenshots: Visual evidence of the issue
  • API Calls: Relevant API requests and responses

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API Integration

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Status API Endpoints

Check data status programmatically: 
# Get overall system status
curl "https://api.chrt.co/v1/status" \
  -H "Authorization: Bearer YOUR_API_KEY"

# Get regional status  
curl "https://api.chrt.co/v1/status/regions" \
  -H "Authorization: Bearer YOUR_API_KEY"

# Get data freshness for specific area
curl "https://api.chrt.co/v1/status/freshness?bbox=-71,42,-70,43" \
  -H "Authorization: Bearer YOUR_API_KEY"

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Status Response Format

{
  "status": "operational",
  "last_updated": "2024-01-15T14:30:00Z",
  "regions": {
    "north_america": {
      "status": "operational", 
      "last_update": "2024-01-15T12:00:00Z",
      "next_update": "2024-01-22T12:00:00Z"
    }
  },
  "metrics": {
    "total_charts": 15420,
    "coverage_sq_km": 25000000,
    "average_age_days": 12
  }
}

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Best Practices

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Application Design

  • Status Checks: Verify data availability before critical operations
  • Fallback Handling: Plan for temporary data unavailability
  • User Communication: Inform users about data limitations
  • Caching Strategy: Cache chart data to reduce dependency on real-time updates

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Monitoring Integration

  • Automated Alerts: Set up notifications for status changes
  • Health Checks: Include ENC status in your application monitoring
  • User Notifications: Alert users when chart data is affected
  • Graceful Degradation: Continue operating with cached or alternative data

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Development Guidelines

  • Test with Status API: Verify data availability in your tests
  • Handle Edge Cases: Plan for areas with limited chart coverage
  • Update Workflows: Design processes to handle data updates
  • Quality Assurance: Validate chart data integrity in your applications

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Maintenance Windows

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Scheduled Maintenance

Regular maintenance occurs:
  • Weekly: Sunday 02:00-04:00 UTC for routine updates
  • Monthly: First Saturday 01:00-05:00 UTC for major releases
  • Emergency: As needed for critical security or stability fixes

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Maintenance Notifications

  • Advance Notice: 72 hours for planned maintenance
  • Status Page: Real-time updates during maintenance
  • Email Alerts: Subscribers notified of schedule changes
  • API Headers: Maintenance warnings in API responses
During maintenance:
  • Read Operations: Generally continue uninterrupted
  • Updates: May be delayed until maintenance completion
  • New Features: Deployment may be temporarily suspended
  • Support: Limited technical support availability