Effective date: April 20, 2026

End-User License Agreement

This End-User License Agreement (the "Agreement") is a legal agreement between you (the "User" or "you") and ChartNav (the "Owner", "we", "us") governing your use of the ChartNav web application, any progressive-web-application installation thereof, and any associated client-side software, data, imagery, documentation, and updates (collectively, the "Software" and the "Content"). By accessing, installing, or using the Software, you confirm that you have read, understood, and agreed to be bound by this Agreement, the Terms and Conditions, and the Privacy Policy. If you do not agree, you must not use the Software.

CRITICAL SAFETY NOTICE — ANY ROUTE, TRACK, BEARING, RANGE, TIDE, CURRENT, WEATHER, OR POSITION DISPLAYED OR GENERATED BY THE SOFTWARE IS A PRELIMINARY SUGGESTION FOR INFORMATIONAL AND PLANNING PURPOSES ONLY. IT MUST NOT BE USED AS THE SOLE BASIS FOR DIRECT NAVIGATION OR FOR ANY DECISION AFFECTING SAFETY OF LIFE, VESSEL, OR PROPERTY. OFFICIAL GOVERNMENT CHARTS, NOTICES TO MARINERS, AND CERTIFIED NAVIGATION EQUIPMENT REMAIN THE ONLY AUTHORITATIVE SOURCES FOR SAFE NAVIGATION.

1. License grant

Subject to your compliance with the terms of this Agreement, the Owner grants you a limited, non-exclusive, non-transferable, non-sublicensable, and revocable license to access and use the Software solely for your legitimate personal or internal professional purposes, in accordance with the terms of this Agreement. No right, title, or interest in or to the Software, the Content, or any related intellectual property is transferred to you. All rights not expressly granted are reserved by the Owner and its licensors.

1.1. Restrictions

Except as expressly permitted by this Agreement or by applicable mandatory law, you agree that you will not, and will not permit any third party to:

copy, reproduce, distribute, publish, transmit, or publicly display the Software or Content, in whole or in part, outside of normal browser use of the Service;
modify, translate, adapt, or create derivative works of the Software or Content;
reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code, underlying ideas, algorithms, file formats, or non-public APIs of the Software, except to the extent that such activity is expressly permitted by applicable mandatory law notwithstanding this limitation;
rent, lease, lend, sell, sublicense, assign, or otherwise transfer the Software or any rights under this Agreement to any third party;
remove, alter, or obscure any proprietary notices, labels, or attributions contained in or on the Software or Content;
circumvent, disable, or otherwise interfere with security-related, authentication, rate-limiting, or access-control features of the Software;
use the Software or Content to build or improve a competing product, service, or dataset;
systematically download, scrape, mirror, or harvest the Content or any portion thereof through automated means, including but not limited to bots, spiders, crawlers, or headless browsers;
use the Software in any manner that could damage, disable, overburden, or impair it, or interfere with any other party's use of the Software;
use the Software for any unlawful purpose or in violation of any applicable local, state, national, or international law or regulation, including export-control laws and sanctions regimes;
use the Software to facilitate smuggling, piracy, sanctions evasion, stalking, unauthorized surveillance, or any activity that endangers maritime safety or search-and-rescue operations.

1.2. Additional limitations on licensed materials

You acknowledge and agree that the Software and Content are provided for informational purposes only and should not be relied upon in situations where personal safety, the safety of life, or the safety of vessels or property is at risk. AIS transmissions may be delayed, absent, incomplete, or deliberately falsified; weather and radar imagery carry latency and inherent uncertainty; tide and current predictions are models and not measurements; and third-party data sources may be unavailable or incorrect.

ANY ROUTE OR TRACK, GENERATED THROUGH THE SOFTWARE OR ANY OTHER APPLICATION INTEGRATED WITH IT, IS A PRELIMINARY SUGGESTION USEFUL FOR PLANNING AND MUST NOT BE USED FOR DIRECT NAVIGATION. The User is solely responsible for verifying all information against official, authoritative sources before making any navigational, operational, or safety decision.

2. Intellectual property

The Software, including all modifications, upgrades, customizations, and derivative works, and all worldwide intellectual property rights therein, are and shall remain the exclusive property of the Owner and its licensors. This Agreement does not grant you any ownership rights in the Software or Content. Third-party components embedded in or distributed with the Software are licensed under their respective licenses, as described in the Acknowledgements page.

3. Updates and modifications

The Owner may, at its sole discretion, modify, update, augment, or remove features of the Software at any time and without prior notice. Updates may be delivered automatically through the browser cache or the progressive-web-application service worker. Continued use of the Software after an update constitutes your acceptance of the updated Software and of any corresponding updates to this Agreement. The Owner is not obligated to maintain backwards compatibility with any prior version.

4. Data and online services

Certain features of the Software depend on online services and third-party data sources (including, without limitation, NOAA, NWS, USACE, NDBC, AIS data feeds, map-tile providers, and open-source CDNs). The Owner does not control these third parties and cannot guarantee the accuracy, completeness, timeliness, or continued availability of their data. The Owner may, at its sole discretion, change, add, or remove third-party data sources at any time. Use of third-party data is also subject to the terms and attribution requirements of the respective providers — see the Acknowledgements page.

5. Disclaimer of warranties

THE SOFTWARE AND CONTENT ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, ACCURACY, AND NON-INFRINGEMENT. THE OWNER DOES NOT WARRANT THAT THE SOFTWARE WILL MEET YOUR REQUIREMENTS, OPERATE WITHOUT INTERRUPTION OR ERROR, BE SECURE, OR PRODUCE ACCURATE RESULTS. THE ENTIRE RISK ARISING OUT OF THE USE OR PERFORMANCE OF THE SOFTWARE REMAINS WITH YOU.

6. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE OWNER, ITS AFFILIATES, OFFICERS, EMPLOYEES, AGENTS, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA, OR OTHER INTANGIBLE LOSSES, PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH, ARISING OUT OF OR IN CONNECTION WITH THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN IF THE OWNER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, THE OWNER DISCLAIMS ALL LIABILITY FOR LOSSES OR INCIDENTS OCCURRING IN MARINE, AQUATIC, OR ANY OTHER ENVIRONMENTS IN CONNECTION WITH THE USE OF THE SOFTWARE. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES; IN SUCH JURISDICTIONS, THE OWNER'S LIABILITY SHALL BE LIMITED TO THE GREATEST EXTENT PERMITTED BY LAW.

7. Subscriptions and paid features

The Software is currently offered free of charge. If, in the future, the Owner introduces subscription-based or paid features, additional terms specific to those features — including pricing, billing, renewal, and cancellation policies — will be presented at the time of purchase and will supplement this Agreement. The introduction of paid features will not retroactively alter any license terms applicable to features previously used free of charge.

8. Termination

This Agreement is effective until terminated. You may terminate this Agreement at any time by discontinuing use of the Software and, where applicable, uninstalling the progressive-web-application and clearing locally stored data through your browser. The Owner may suspend or terminate your license immediately, without notice, if you breach any provision of this Agreement or if the Owner discontinues the Software. Upon termination, all rights granted to you under this Agreement will cease, and you must stop all use of the Software. Sections 2, 4, 5, 6, 8, 10, 11, and 12 shall survive any termination of this Agreement.

9. Privacy

Your use of the Software is also governed by the Privacy Policy, which is incorporated by reference into this Agreement.

10. Export controls and sanctions

You represent and warrant that you are not located in, under the control of, or a national or resident of any country subject to a comprehensive embargo by the United States, the European Union, or the United Kingdom, and that you are not on any list of prohibited or restricted parties maintained by such authorities. You agree to comply with all applicable export-control and sanctions laws and regulations.

11. Governing law and jurisdiction

This Agreement shall be governed by and construed in accordance with the laws of the jurisdiction in which the Owner is based, without regard to its conflict-of-laws provisions. The courts of that jurisdiction shall have exclusive competence over any dispute arising out of or in connection with this Agreement, except where mandatory consumer-protection law of the User's country of habitual residence requires otherwise.

12. Final clauses

If any provision of this Agreement is held to be invalid, illegal, or unenforceable, the remaining provisions shall remain in full force and effect. The failure of the Owner to enforce any right or provision of this Agreement shall not constitute a waiver of such right or provision. This Agreement, together with the Terms and Conditions and Privacy Policy, constitutes the entire agreement between you and the Owner with respect to the Software and supersedes all prior or contemporaneous agreements, communications, and understandings, whether written or oral, relating to its subject matter. The Owner reserves the right to modify this Agreement at any time by posting a revised version within the Service; continued use of the Software after such modification constitutes acceptance of the revised Agreement.

Contact

For questions about this Agreement, please contact: legal@chartnav.ai.