Nautical chart SHC - 4640 - Isle aux Morts and Approaches

This Canadian Hydrographic Service paper navigation chart (flat chart) covers Atlantic Ocean, the area Isle aux Morts and Approaches.

Canadian Hydrographic Service (CHS) nautical charts are the official reference for safe navigation across Canada’s vast and diverse maritime regions. Produced by the Canadian Hydrographic Service, they cover a wide range of navigational environments, including:

• the Atlantic and Pacific coasts,
• the St. Lawrence River,
• the Great Lakes,
• Arctic waters.

Available from the Nautic Way online maritime bookstore, CHS charts are specifically designed to address the challenges of these ?????, including strong tidal variations, rapidly changing weather, ice conditions, remote coastlines, and confined waterways.

Choosing the right CHS chart is essential to ensure accuracy, safety, and compliance with both Canadian and international navigation standards.

What is a Canadian Hydrographic Service nautical chart used for?

CHS charts are developed to support navigation in demanding and often complex maritime environments.

Practical uses

They are used for:

• Coastal navigation in Canada (Atlantic and Pacific)
• Navigation along the St. Lawrence River and inland waterways
• Offshore navigation in northern regions
• Sailing in the Great Lakes
• Transiting complex areas such as fjords, straits, and ice-affected waters

Real-life navigation scenarios

• Navigating upstream on the St. Lawrence River with strong currents and dense buoyage
• Cruising along British Columbia’s intricate coastline of islands and fjords
• Operating in Arctic regions where ice conditions impact navigation
• Entering ports affected by significant tidal ranges

Added value compared to generic or digital-only charts

CHS charts provide:

• Official, locally adapted cartography
• High accuracy in areas with strong natural constraints
• Structured information to anticipate risks such as ice, currents, and shallow waters

Who are CHS charts recommended for?

CHS charts are suitable for a wide range of navigators, from recreational sailors to professionals.

Target users

• Beginner to experienced coastal navigators
• Recreational boaters cruising in Canadian waters
• Offshore sailors in northern regions
• Maritime professionals

Navigation conditions

• Suitable for day and night navigation
• Adapted to occasional or intensive use
• Used in conjunction with GPS, chartplotters, or ECDIS systems

These charts help ensure safe navigation in technically demanding and changing environments.

How to read and use a CHS nautical chart

CHS charts comply with international standards while incorporating Canadian-specific navigation features.

Understanding chart scale

• Small scale: offshore planning and overview
• Medium scale: coastal navigation
• Large scale: harbors, channels, and complex areas

In areas such as fjords or the St. Lawrence River, selecting the appropriate scale is critical.

Key information displayed

A CHS chart includes:

• Accurate depth soundings
• Seabed composition
• Canadian buoyage system
• Currents and tidal information
• Hazards (rocks, wrecks, shoals)
• Ports and anchorages

Essential user knowledge

• Interpreting tidal variations affecting depth
• Understanding current patterns
• Identifying areas affected by seasonal ice

CHS charts are essential tools for anticipating Canada’s unique natural constraints.

Reliability, updates, and safety

An official update system

The CHS provides:

• Notices to Mariners
• Regular chart corrections
• Updated chart editions

These updates are critical in areas where conditions evolve frequently.

Standards and compatibility

• Based on the WGS 84 geodetic system
• Compliant with international standards
• Compatible with ECDIS navigation systems

Best safety practices

• Always verify the chart edition date
• Apply necessary corrections
• Keep paper charts onboard as backup

Reliable and up-to-date charts are fundamental to safe navigation.

Paper vs digital CHS charts – why keep paper onboard?

Advantages of paper charts

• Immediate global overview of the navigation area
• Better understanding of complex zones
• Independence from electronic systems
• Official and recognized navigation reference

Complementarity with electronic tools

• Cross-checking GPS data
• Supporting route planning
• Providing redundancy in case of failure

In remote areas, redundancy is essential for safety.

FAQ – Canadian Hydrographic Service charts

Which CHS chart should I choose for navigating in Canada?
It depends on your sailing area (coastal, river, lake, Arctic) and the level of detail required.

Is a CHS chart sufficient on its own?
Yes as a primary reference, but it is best used alongside electronic navigation tools.

How often should CHS charts be updated?
Whenever a new edition is released or important corrections are issued.

Are CHS charts compatible with GPS?
Yes, they are based on the WGS 84 system and fully compatible with modern navigation equipment.

What is the difference between CHS, SHOM, and Admiralty charts?
CHS charts are specifically designed for Canadian waters, with detailed information adapted to local conditions.

Summary – CHS charts: navigating safely in demanding environments

Canadian Hydrographic Service nautical charts are essential tools for navigating Canada’s waters and northern regions. They provide accurate, reliable, and region-specific information, crucial in environments where navigation conditions can be particularly challenging.

By choosing them from Nautic Way, you benefit from expert selection, trusted cartography, and professional guidance, ensuring safe and confident navigation in all conditions.

Canadian Hydrographic Service nautical charts are updated daily and printed only on demand. On the day of printing, they incorporate the latest updates. The chart's publication year is indicated on it.

We strive to offer only the latest versions of nautical charts incorporating the most recent updates.

All nautical charts, whether paper or digital, are printed on demand and include the latest updates. In accordance with Article L221-28 of the French Consumer Code, the right of withdrawal cannot be exercised for goods liable to become obsolete rapidly. Paper charts and digital charts are neither returnable nor exchangeable. Consequently, these orders are final upon placement by the Customer, according to the terms and conditions specified in these General Terms and Conditions of Sale.