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OpenSeaMap VS OpenPlotter

Compare OpenSeaMap VS OpenPlotter and see what are their differences

OpenSeaMap logo OpenSeaMap

OpenSeaMap - The free nautical chart

OpenPlotter logo OpenPlotter

Tool kit to be used as navigational aid in small and medium-length boats.
  • OpenSeaMap Landing page
    Landing page //
    2019-09-17
  • OpenPlotter Landing page
    Landing page //
    2025-03-25

OpenSeaMap features and specs

  • Open Source and Free
    OpenSeaMap is an open-source project, which means it is free to use and benefits from community contributions. This collaborative effort can lead to a more comprehensive and accurate map.
  • Nautical Information
    The platform provides specialized nautical information that is useful for sailors, such as the location of lighthouses, buoys, and other maritime markers, which are not typically found on standard maps.
  • Community Driven
    Being community-driven allows rapid updates and additions of data from local sailors and enthusiasts, improving the accuracy and detail of the maps over time.
  • Integration with OpenStreetMap
    By integrating its data with OpenStreetMap, OpenSeaMap benefits from OSM's extensive data, enhancing the map's overall utility and depth of detail.

Possible disadvantages of OpenSeaMap

  • Data Accuracy and Reliability
    As with many open-source mapping projects, the accuracy and reliability of the data can vary based on community input and may lack the rigor of official maritime charts.
  • Limited Coverage
    In some regions, OpenSeaMap's coverage may be incomplete due to fewer contributions, which can lead to gaps in information that are significant for navigational purposes.
  • User Interface
    The user interface of OpenSeaMap might not be as polished or user-friendly as commercial products, which can hinder ease of navigation and use.
  • Dependence on Volunteers
    Since OpenSeaMap relies heavily on volunteer contributions, the frequency and quality of updates can be inconsistent, depending on user engagement and input.

OpenPlotter features and specs

  • User-Friendly Interface
    OpenPlotter provides an intuitive and accessible interface for users, especially those new to navigating with marine technology. This makes it easier for beginners to start using the system without extensive training.
  • Comprehensive Integration
    It supports a wide range of sensors and marine protocols, making it a powerful tool for integrating various onboard systems. This enhances the efficiency and effectiveness of managing navigation data.
  • Open Source Flexibility
    Being open source, OpenPlotter allows customization and modification, enabling users to tailor the software to their specific needs without licensing constraints.
  • Cost-Effective Solution
    As a free, open-source project, OpenPlotter is a cost-effective alternative to expensive commercial navigation systems, making it accessible to a broader range of users.
  • Extensive Community Support
    A strong, active community provides support, resources, and plugins, facilitating troubleshooting and the sharing of best practices among users.

Possible disadvantages of OpenPlotter

  • Hardware Dependency
    The effectiveness of OpenPlotter is dependent on compatible hardware, which might require users to purchase additional components to fully utilize its capabilities.
  • Steep Learning Curve for Advanced Features
    While the basic functionality is user-friendly, mastering the more advanced features may require significant time and effort, particularly for users less familiar with programming or marine electronics.
  • Reliance on Community Contributions
    The open-source model means that updates and feature enhancements depend heavily on community contributions, which may lead to uneven development or support for specific features.
  • Potential Stability Issues
    As with many open-source projects, there can be occasional stability issues or bugs, especially when integrating new updates or third-party applications.
  • Limited Professional Support
    Unlike commercial software, OpenPlotter may have limited access to professional customer support, which can be a drawback for users who need immediate assistance.

OpenSeaMap videos

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OpenPlotter videos

using a raspberrypi and openplotter as backup navigation system on my sailboat #boatrefit #nmea2000

More videos:

  • Review - OpenPlotter Data Multiplexing - AIS on a Raymarine C80 from SignalK - Boat Projects

Category Popularity

0-100% (relative to OpenSeaMap and OpenPlotter)
Weather Apps
55 55%
45% 45
Web App
57 57%
43% 43
Online Services
100 100%
0% 0
Travel & Location
0 0%
100% 100

User comments

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What are some alternatives?

When comparing OpenSeaMap and OpenPlotter, you can also consider the following products

OpenCPN - 404 Please update your bookmarks and return to the home page.

Weatherspark - WeatherSpark is a typical weather information service provider over the internet for freely getting the real-time hourly, daily, weekly and monthly graphical reports of the average weather.

zyGrib - GRIB File Viewer

UnderSee Explorer - Online Services

Open Nautical Charts - Open Nautical Charts offers free seacharts for everybody.

Argo - Boating Navigation - Charts, Routes, Tracks, Log