IMO - 910Ee - Manual on Maritime Safety Information (MSI)

Master Maritime Safety Communication with the 2025 MSI Manual
The Manual on Maritime Safety Information (MSI) is the cornerstone of effective maritime safety communication, providing professionals with a standardized framework for drafting navigation warnings, weather forecasts, and emergency alerts. Developed in collaboration with the International Maritime Organization (IMO), the International Hydrographic Organization (IHO), and the World Meteorological Organization (WMO), this manual ensures that critical safety information is conveyed with precision, clarity, and consistency across global maritime operations.

Comprehensive Coverage for GMDSS Compliance
Designed to support the Global Maritime Distress and Safety System (GMDSS), this manual aligns with IMO Resolution A.705(17), as amended, to ensure full compliance with international safety protocols. It provides detailed guidance on issuing navigation warnings under the IMO/IHO Worldwide Navigational Warning Service (WWNWS), governed by Resolution A.706(17), as well as meteorological forecasts and warnings under the WMO framework. All messages are structured to meet the requirement for English-only broadcasts via NAVTEX and SafetyNET, ensuring seamless integration into global maritime safety networks.

Optimized Messaging for Maximum Impact
Clarity and conciseness are critical in maritime safety communication. This manual offers standardized formulations for all types of warnings and forecasts, drawing from the IMO Standard Marine Communication Phrases (Resolution A.918(22)) to eliminate ambiguity. While it doesn’t cover every possible scenario, its principles are universally applicable, enabling users to craft messages that are timely, relevant, and easy to understand. Whether you’re issuing a tropical cyclone warning, an iceberg advisory, or a coastal hazard alert, this guide ensures your communications are effective and compliant.

Digital Accessibility for Modern Maritime Operations
The 2025 edition is available as a secure digital e-book, designed for professionals who need instant access to safety protocols. The digital format features fully bookmarked and indexed content, allowing users to navigate effortlessly between sections. Compatible with the IMO Bookshelf and accessible via Witherby Connect or IMO ePublications, this manual is optimized for use in maritime environments. Note that the digital version is exclusively supported on approved platforms and is not compatible with Mac, iPhone, iOS, or Android devices, ensuring secure and controlled access.

The Manual on Maritime Safety Information (MSI) is a 2025 digital edition, published on February 28, 2025, and available exclusively in English. The e-book is fully bookmarked and indexed for easy navigation and is compatible with the IMO Bookshelf, Witherby Connect, and IMO ePublications platforms. Access is provided via a browser-based eReader through a Witherby Connect license, with support limited to approved maritime systems (not compatible with Mac, iPhone, iOS, or Android). The manual is also available in French and Spanish for multilingual users.

With a legacy of setting global maritime standards, this publisher is a trusted authority in maritime safety, navigation, and regulatory compliance. Their publications are developed in collaboration with international organizations to ensure alignment with the latest industry protocols, making them indispensable resources for maritime professionals worldwide.

• This manual delivers standardized, compliant, and actionable guidance for maritime safety communication, ensuring that navigation warnings and weather forecasts are clear, concise, and consistent.
• Its digital format provides instant access to critical information, with fully indexed content for efficient navigation.
• By aligning with IMO, IHO, and WMO standards, it guarantees compliance with international regulations, while its secure, platform-specific access ensures reliable usage in maritime environments.
• Ideal for authorities, meteorologists, and shipping professionals, it enhances the effectiveness of safety alerts and reduces the risk of miscommunication.