Kurshalter — Terms of use
Last updated: 19 September 2026
1. Provider and scope
The provider of kurshalter.com and the Kurshalter app is:
Luke Friedrichs
Leibnizstraße 2
48565 Steinfurt, Germany
Email: contact@kurshalter.com
The website introduces Kurshalter and provides a chart demo and a viewer for voluntarily shared positions. No paid contracts are currently concluded through the website; there is no checkout or subscription. The app and its online features may have a different feature set from the demo.
These terms become part of a contract only where validly agreed when that contract is concluded. Visiting the website or making this text available does not replace any required agreement. Statutory rights remain unaffected.
2. Purpose and safety
Kurshalter is a planning and situational-awareness aid, not a navigation device or an official nautical chart. The website demo is not for navigation. Its example voyage is not a recommendation of a route that is safe to sail.
Open chart data can be incomplete, outdated or incorrect. Depths, computed routes, zones, speed limits and alarms are supplementary information. Use current official charts and publications and appropriate navigation equipment, and follow applicable maritime safety rules. Kurshalter must not be your only source of navigation information.
Live sharing is not an emergency or rescue system. Positions can be outdated because of connection failures or missing updates. These notices describe the intended purpose; they do not exclude our statutory liability.
3. Use, software and open data
You may visit the website for information and use its demo and share viewer. You may install and use the app under the licence terms validly agreed when obtaining it. Where no special terms have been validly agreed, statutory provisions apply. Rights to software, text and design belong to us or their respective rights holders.
Open-source components and open data are governed by their respective licences, which these terms do not restrict. These include OpenStreetMap and OpenSeaMap data under the ODbL and other sources listed in our chart-data information. The derived databases described there are available under the specified licences. Reuse must respect applicable credits and attribution requirements.
4. Sharing and personal data
Starting live sharing in the app makes the shared position and recent trail available to anyone holding the link. Send the link only to intended recipients. You can stop sharing in the app; this does not delete copies already made by recipients. Do not share other people's personal data without an appropriate authorisation.
Routes, waypoints, tracks, boat profile and settings are generally stored locally on your device. Online requests, exports and optional live sharing are the exceptions described in the privacy policy. It also covers website hosting and email contact. Sending an enquiry does not subscribe you to marketing emails.
5. Responsible use
Do not unlawfully interfere with the service, including bypassing access controls, accessing other people's shares without authorisation or deliberately overloading the service. Activities permitted by law and rights under open-data and software licences remain unaffected. You can send factual problem reports through support.
6. Availability and changes
Online features require a working connection and may be temporarily unavailable because of maintenance, faults or missing data. Technical feature descriptions do not create a guarantee of uninterrupted availability beyond statutory or expressly agreed duties.
Changes to agreed services are governed by the relevant agreement and applicable law. These terms give us no additional unilateral right to change or discontinue agreed services. Statutory rights concerning defects and any update obligations remain in place.
7. Charges and app stores
We do not charge for current use of the website. Your internet or mobile provider may charge you. If paid offerings are introduced, their price, service and contractual terms will be provided separately before a paid order. Visiting the website creates no payment obligation.
When obtaining the app, terms validly agreed in the relevant store also apply. These website terms do not replace a store licence or create additional obligations for Apple or Google. Statutory claims against us or other responsible parties are not excluded.
8. Liability
Our liability is governed by statutory provisions. These terms add no exclusion of liability or financial cap. This also applies to the safety notices, data-quality descriptions and availability notices. Statutory rights concerning defects and data protection claims remain unaffected.
9. Version, changes and dispute resolution
The date above identifies this text's revision. A new version does not automatically amend existing contracts. Where changes require agreement, we will obtain it; silence or continued use alone does not constitute agreement.
Statutory rules on applicable law and jurisdiction remain unaffected. The consequences of invalid contractual provisions are governed by law. We are neither willing nor obliged to participate in dispute resolution before a consumer arbitration body (§36 VSBG).