CFR Title 46: Parts 140-155 – Shipping (Code of Federal Regulations), Revised as of October 1, 2025
Mancomm 29 CFR Part 1926 OSHA Construction Standards & Regulations, January 2026
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Understanding ECDIS and selecting the right ECDIS solution is vital for ensuring the safe and precise navigation of a vessel on track, and on time. The ECDIS Manual, written by and for ECDIS navigators, draws on the knowledge of leading ECDIS experts and manufacturers, as well as calssification societies and NGOs, to support a vessel's transition to digital navigation in accordance with IMO, IHO, Flag State, PSC, ISM, SMS and SIRE requirements.
This publication is a comprehensive guide to the use of ECIDS systems. It outlines the history and development of digital navigation and provides detailed explanations of electronic charts and operating systems, supplemented by over 500 screenshots and colour images. It includes familiarisation checklists for a number of different systems, as well as the CIRM GL-001 Guideline for ECDIS Performance Test Procedure. The book also summarises the contributory factors in several ECDIS-related incidents.
Introduction
Acknowledgements
ECDIS Abbreviations and Useful Info
Photo Acknowledgements
Foreword by Admiral Nick Lambert, Former National Hydrographer UKHO
About ECDIS Ltd
History of the Electronic Chart
International Agreement
Early Solutions to Comparing Radar and Charts
From Navigation Aids to Navigation Systems to Bridge Systems
Types of Electronic Position-Finding Equipment
Integrated Bridge Projects and Bridge Mechanisation
Inventing Electronic Charts: The First Generation
Creating Official International Standards
UKHO ARCS (Admiralty Raster Chart Service)
Organising Worldwide Digital Chart Production
Third Generation Vector Charts, 1995 to 2010
Commercial Electronic Charts for the Leisure Market, 2005 to 2010
Fourth Generation Electronic Charts with Passage Planning Tools, 2010
Fifth Generation Electronic Charts, 2018
ECDIS Regulations
The IHO
International Electrotechnical Commission (IEC)
International Maritime Organization (IMO)
IMO Resolution MSC.232(82)
CIRM
Date Changes in Performance Standards
IMO Circulars
Safety of Life at Sea (SOLAS) Convention
SOLAS Ch V, Regulation 2, Part 2
SOLAS Ch V, Regulation 19, Part 2.1.4
SOLAS Ch V, Regulation 19, Part 2.1.5
SOLAS Ch V, Regulation 27
ISM and Flag Compliance
Standards of Training, Certification and Watchkeeping (STCW) Convention
International Safety Management (ISM) Code
Generic ECDIS Training
Type-Specific and Familiarisation Training
Safety Management System
Flag States
Flag State ECDIS Requirements
Port State Control (PSC)
Further Legal Considerations
SIRE
ECDIS Operator’s Responsibility
The Electronic Chart
Introduction
Electronic Chart Data
Definitions
Vector Charts
Defining a Vector Chart
Varying Standards of Vector Charts
RENC
The Basics of ENC
Hydrographic Office Approved Electronic Charts
Use of Data
Unofficial or Private Data
Classification of Official Data
Flag State Adoption
The economic constraints of modern shipping signify more often than not that we are navigating to rigid time scales, in hazardous conditions, with less support. Being able to perform safe and precise navigation on track, and on time, is fundamental. ECDIS was designed to give the mariner greater spatial awareness in increasingly dangerous and hazardous conditions. After all, things happen quickly at 20+ knots and often the nearest point of danger is just below your keel. Understanding ECDIS and selecting the right ECDIS solution is vital when you consider that there are currently 27 diverse manufacturers, several providers of approved ENC and RNC charts, and varying standards of training. In 2009
Mr Malcolm Instone, Director of Operations to ECDIS Ltd, paraphrased Murphy’s law:
“Choose the wrong ECDIS solution, and you won’t see the light at the end of the tunnel you will see the light of the oncoming train.”
Sadly for some, he was right.
The ECDIS Manual has been written by ECDIS navigators for ECDIS navigators. The manual is about sharing best practice and ensuring that the transition from ‘sail to steam’ is efficient and safe. The principles of navigation have not changed, but the art of navigation has. With the
right training and to some degree the right ECDIS, you can replace paper charts with an ECDIS in all operating conditions – even when GNSS is unavailable, contrary to common misconception!
This manual, in conjunction with the leading ECDIS experts, manufacturers, international organisations and leading societies, has ultimately been the hard work of the author Mr Peter Thornton MBE. Peter is a traditional ‘paper’ Master Mariner who made the transition to digital navigation. He has navigated for 15 years across the world, berth to berth, utilising different ECDIS systems, developing an immeasurable experience of the good, the bad and the ugly of ECDIS navigation. His contribution to the digital transition is unsurpassed.
The manual has been written to support a vessel’s transition to digital navigation in accordance with IMO, IHO, Flag State, PSC, ISM, SMS and SIRE requirements. It only leaves me to thank Peter, Priscilla and Mal without whom it would not have been possible.
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CFR Title 46: Parts 140-155 – Shipping (Code of Federal Regulations), Revised as of October 1, 2025
Mancomm 29 CFR Part 1926 OSHA Construction Standards & Regulations, January 2026