Maritime Resource Directory

American Nautical Services, Inc. recommends these different sources where you can find information for all of your nautical needs. We offer information when it comes to choosing classes, technical information, or general maritime information.

These resources will be key for your maritime needs!



The National Oceanic and Atmospheric Administration is a scientific agency within the United States Department of Commerce focused on the conditions of the oceans and the atmosphere. NOAA warns of dangerous weather, charts seas and skies, guides the use and protection of ocean and coastal resources, and conducts research to improve understanding and stewardship of the environment. Nautical charts produced by NOAA meet the definition of a nautical chart laid out in SOLAS Chapter V Regulation 2.2 and meet the carriage requirements defined in SOLAS Chapter V Regulation


The UK Hydrographic Office (UKHO) is a world-leading center for hydrography, specializing in marine geospatial data that helps others to unlock a deeper understanding of the world's oceans.

The British Admiralty shares this data with governments, defense users and academia, as well as make it available through their portfolio of ADMIRALTY Maritime Data Solutions. This includes our world-leading range of navigational charts, publications and data sets which can be found on board over 90% of ships trading internationally.

The UKHO is continuing to innovate so that they can meet the evolving needs of these users and reach wider markets. As the marine data and technology capabilities grow, they will help those working in the blue economy to make better decisions and truly make the most of the world's oceans.

The Admiralty Digital Catalogue provides a comprehensive and up to date reference in graphical and textual form of the range of Admiralty products and services, including Standard Navigational Charts and Publications, and the AVCS, ARCS and Admiralty ECDIS Services.

Sail safer with OceanGrafix  NOAA Print-on-Demand Charts (U.S. Waters), NGA Charts (International Waters), NHS Charts (Norwegian Hydrographic Service), CHS Charts (Canadian Hydrographic Service), Imray Charts, SHOM Charts and more!


The National Geospatial-Intelligence Agency (NGA), in the Department of Defense, partners with NOAA to provide critical nautical information to the public. The mission of NGA's Maritime Safety Information Division is to collect and analyze maritime safety information in support of a nautical database maintenance environment to produce, promulgate, and provide worldwide access to standard nautical, digital and customer tailored hydrographic and bathymetric safety of navigation data. NGA's most important publication is the US Notice to Mariners.

International Maritime Organization (IMO)
is the United Nations specialized agency with responsibility for the safety and security of shipping and the prevention of marine and atmospheric pollution by ships. IMO's work supports the UN SDGs.​

As a specialized agency of the United Nations, IMO is the global standard-setting authority for the safety, security, and environmental performance of international shipping. Its main role is to create a regulatory framework for the shipping industry that is fair and effective, universally adopted and universally implemented.

Exis Technologies Limited
 is the leading supplier of computerized systems for the management of dangerous goods in sea transport. We have over 25 years’ experience of supporting major shipping lines, distributors and warehouse operators, ports and terminals, government, and regulatory organizations worldwide.

Exis supplies a complete range of products backed by technical support and consulting services. Our specialist teams combine chemistry, hazardous materials expertise, computer programming, quality assurance and project management skills that deliver the most efficient and user-friendly systems available.

Exis head office is in Darlington, UK for development, sales, support and administration.  We also have a regional office and data centre (AIMES) in Liverpool.

The U.S. Coast Guard is one of the five armed forces of the United States and the only military organization within the Department of Homeland Security. Since 1790 the Coast Guard has safeguarded our Nation's maritime interests and environment around the world. The Coast Guard is an adaptable, responsive military force of maritime professionals whose broad legal authorities, capable assets, geographic diversity, and expansive partnerships provide a persistent presence along our rivers, in the ports, littoral regions and on the high seas. Coast Guard presence and impact is local, regional, national, and international. These attributes make the Coast Guard a unique instrument of maritime safety, security, and environmental stewardship.

The U.S. Coast Guard Navigation Center (NAVCEN) controls and manages Coast Guard radionavigation systems from sites in Alexandria, Virginia and Petaluma, California. In addition to reliable navigation signals, NAVCEN provides users worldwide with information and timely operational status reports on the GPS, DGPS and Loran-C navigation systems.

These reports by NAVCEN's Navigation Information Service are available 24 hours a day in a wide range of media (Internet, BBS and Fax on Demand as well as telephone). The service also provides access to the Coast Guard Local Notice to Mariners and to other Coast Guard information sources.

In addition to the navigation information and links available at NAVCEN, additional maritime safety information may be found at the U.S. Coast Guard's Marine Safety home page. specializes in providing cutting-edge maritime connectivity solutions for yacht owners, guests, and crew. As a leading reseller of technologies like Starlink, Peplink, and Epic IO, ensures seamless internet access at sea, enabling users to stay connected, stream entertainment, and work remotely with reliable and high-performance WIFI solutions. They offer a range of services tailored to enhance yachting experiences, revolutionizing maritime communication with their expertise and innovative technologies.