Modern navigation relies on electronic charts, yet paper charts remain essential for safety and regulatory compliance. While NOAA discontinued all 1,007 paper nautical charts by January 2025 and the UK Hydrographic Office will cease production by 2026, understanding when to use each system and maintaining proficiency in both has become a core competency for professional navigators.

Electronic Charts Advantages: Real-Time Navigation

Electronic Chart Display and Information Systems provide real-time vessel positioning integrated with digital chart data. According to IMO regulations, ECDIS with adequate backup arrangements may comply with chart carriage requirements for international voyages.

Key advantages:

• Real-time positioning and safety alerts: ECDIS provides automated warnings of grounding risk, shallow water, and traffic separation scheme violations allowing earlier course corrections. Paper charts cannot provide these automated safeguards.

• Last-minute route changes: When rerouted to avoid piracy, weather, or schedule changes, electronic charts eliminate the delay of ordering and receiving physical charts. In commercial shipping, this operational advantage is substantial.

• Automated passage planning: ECDIS automates route planning, ETA computation, and route monitoring, significantly reducing navigator workload. However, this convenience carries a caution: overconfidence in automated systems can reduce manual verification.

• Immediate chart updates: Electronic charts receive updates weekly or bi-weekly and apply instantly. Paper chart corrections require manual notation and portfolio management.
  
  

For optimizing ECDIS safety features, review ANS's guide on ECDIS alarm settings and compliance.

Paper Charts Benefits: The Backup That Still Matters

Despite digitization, paper charts remain mandatory for many vessels and essential in several operational scenarios.

Regulatory backup requirements

SOLAS requires backup navigation capability when ECDIS is primary. The two accepted arrangements are: (1) a second independent ECDIS, or (2) an up-to-date portfolio of paper charts. When using Raster Navigational Charts, paper chart backup is mandatory.

Critical compliance point

This isn't just a backup requirement, it's a compliance issue verified by port state control inspectors. Your backup charts must be current with the latest corrections applied. Gaps between paper backup and ECDIS data create audit deficiencies, even if ECDIS navigation was flawless. ANS's Flag State Compliance service clarifies what your flag state requires and ensures proper documentation.

Paper charts are essential when:

• ENC coverage gaps exist: While electronic chart coverage has expanded, gaps remain in developing regions, remote areas, and certain restricted waters. Paper charts provide the only reliable navigation option in these areas.

• System failures occur: Electronic systems are vulnerable to power failures, software crashes, and cybersecurity threats. Paper charts require no power and cannot be hacked. In zero-visibility scenarios with ECDIS down and GPS unavailable, paper charts may be your only navigation option.

• Training crew competency: Manual plotting maintains situational awareness that diminishes with exclusive automation reliance. Industry research shows "a recognized trend between use of ECDIS and a rise in groundings resulting from lack of knowledge, user competency, and perceived complacency."

• Verifying electronic data: Paper charts provide independent verification when ECDIS displays seem questionable. Navigators familiar with both systems catch errors that automation-only approaches miss.

Maintain paper chart proficiency through regular exercises. ANS's ECDIS e-learning courses incorporate traditional charting alongside digital instruction, ensuring bridge teams maintain competency in both systems.

Best Practices For Navigation Chart Comparison: Using Both Systems

Professional navigators use ECDIS and paper charts strategically, treating them as complementary tools rather than competing options.

Pre-voyage planning

Use ECDIS for efficient route planning while verifying critical waypoints and hazards on paper charts. This dual verification catches ECDIS errors before departure and ensures crew familiarity with both systems.

Underway monitoring

Navigate primarily on ECDIS with periodic position verification on paper charts. Mark vessel positions on paper charts at regular intervals to ensure operational continuity if ECDIS fails. While this practice seems tedious, it maintains manual plotting skills, provides independent positioning verification, and documents your navigation decision-making for port state control inspections.

Critical passages

During restricted waters, heavy traffic, or reduced visibility, have paper charts readily available. Cross-reference key decisions between systems. Inspectors specifically scrutinize navigation during critical passages, and marked paper chart evidence demonstrates safe, deliberate seamanship.

Configuration verification

Incorrect ECDIS safety parameter settings have caused groundings and detentions. Paper charts provide a reality check. If your ECDIS is set to alarm at 50 meters but you're navigating 40-meter waters, the paper chart review catches this error before grounding occurs.

The Training Imperative in Digital vs Analog navigation

STCW convention mandates both generic and type-specific ECDIS training for officers. However, competent navigation requires proficiency in both electronic and traditional methods.

Port state control inspections increasingly verify bridge team competency in both systems. Crews appearing over-reliant on automation or unfamiliar with paper chart interpretation face deficiency findings that can detain vessels.

Schedule regular paper chart exercises even when operating primarily with ECDIS. Maintaining this dual competency through training and deliberate practice is regulatory compliance, not nostalgia.

Choosing the Right Approach for Your Vessel

Commercial international shipping: Use ECDIS as primary system with adequate backup. Clarify your flag state's specific requirements and maintain backup systems accordingly.

Regional/coastal operations: Paper chart coverage may be equally important as digital systems. Many operators use hybrid approaches where paper charts are primary and ECDIS supplementary.

Areas with incomplete ENC coverage: Maintain comprehensive paper chart portfolios for regions where digital coverage is incomplete.

Treat electronic and paper charts as complementary tools. ECDIS provides efficiency and real-time awareness; paper charts provide reliable backup and navigation verification. The safest approach combines both strategically.

Ensuring Navigation Competency 

The transition to ECDIS-primary navigation doesn't eliminate paper charts; it redefines their role from primary tool to essential backup.

Successful navigators and fleet operators manage this transition by:

• Maintaining dual competency in both systems

• Clarifying flag state backup requirements

• Using ECDIS and paper charts as integrated tools

• Investing in training for bridge teams

• Keeping chart data current and ready for immediate use

How ANS Supports Navigation Excellence

American Nautical Services has supported maritime navigation since 1977. We provide:

• Current chart portfolios – Paper charts from ADMIRALTY, NOAA, NGA, and other official hydrographic offices

• Digital chart solutions – Electronic Navigation Charts and Raster Charts for all major regions

• Navigation software – SPICA e-Navigator integrating chart management and voyage planning

• Professional training – ECDIS e-learning courses maintaining bridge team competency

• Compliance expertise – Flag State Compliance service clarifying backup requirements

Contact ANS today to discuss your navigation chart strategy and ensure your vessel meets modern maritime standards.

Related Resources

• ECDIS Vector Charts vs Raster Charts: Understanding the Difference

• Best Practices for Using an ECDIS

• Ensuring Compliance: Bridge Audit Readiness with SOLAS Chart Carriage Requirements

FAQs

Q1. Can ECDIS completely replace paper charts?

ECDIS can meet SOLAS carriage requirements, but only with adequate backup either a second independent ECDIS or current paper charts. Verify your flag state's specific requirements.

Q2. How often should electronic charts be updated?

As soon as new Notices to Mariners are issued typically weekly or bi-weekly. Paper backup charts must also be kept current with corrections applied.

Q3. What if ECDIS fails during a voyage?

Navigate using traditional plotting methods with paper chart backup, or switch to secondary ECDIS if available. SOLAS requires documented procedures for continuing safe navigation during ECDIS failure.

Q4. Are paper charts still available?

NOAA discontinued production by January 2025. The UK Hydrographic Office will cease by 2026. However, other hydrographic offices continue production. Verify availability for your operational areas in advance.