SAS Planet and Sat2Chart, are currently Windows only. However, the programs needed to make mbTiles, With a serial‑port splitter to feed the GPS signal to both programs.ĭisplay mbTiles, is available for many operating systems: Windows, Mac, Linux, Raspberry Pi, Android ($15),Įtc, but not iPads or iPhones as of 2023. When cruising, we typically run both SAS and OpenCPN side‑by‑side on a 17" laptop, It's almost a navigation program in its own right. Input to show you where you are, and it can import, display, and export GPX data (routes, waypoints, tracks, etc) so You choose, and it will happily grind away downloading and storing the information by itself. You can mark out an area and tell SAS to download all imagery (tiles) in that area, at whatever zoom‑levels SAS stores everything it downloads into its cache on your hard drive, so it's available for offline use (and for making mbTiles). Having used it now for a few years, it seems pretty good. SAS is part of the Open Software Foundation (like OpenCPN). Maxar, OSM, and a host of others, as well as 2 flavors of Navionics marine charts and 5 flavors of CMap marine charts. As of 2021, SAS provides FREE access to imagery from ArcGIS (which isįabulous, and usually quite expensive), Bing (Microsoft), Nokia (also Microsoft now), Google Earth, Yandex, MapBox, Open Source Russian program called SAS Planet, which knows how to access the data on those websites. The imagery is stored on the websites of the companies involved (ArcGIS, Bing, etc). So please don't be put off by the length of this page. There are some minor extra details, but that's basically it. Let Sat2Chart & SAS start cranking away.How far on each side of your routes you want imagery for (we use 4nm).Which maps you want mbTiles of (Bing, Google, ArcGIS, Nokia, Navionics, CMap, etc).What zoom levels you want in your mbTiles (we use Z10-18).Tell Sat2Chart where that folder is and which routes to work on, as well as:.Name and export those routes to a folder.Use OpenCPN to draw routes along the coastlines, and around archipelagoes or shallows.Set up, the workflow is actually pretty simple: Their own charts, so I try to explain all the steps as best I can. Mostly it's because I want even novices to be able to make Well, yes, it is, and I'm sorry if it looks a bit scary. Theyĭon't always show everything, but where they show something, that's exactly where it is. They'll show you which slip you're inĪt the marina, or exactly where that coral head is that you have to dodge to get into that perfect anchorage. Is amazingly accurate, with maximum errors on the order of 10 feet, or 3m. The geo‑registration of satellite imagery We've been augmenting our charts with satellite imagery since 2014. Note especially our southern anchorage, & how the island is displaced in CM93. Remember that they're made primarily for cargo ships. They're supposed to be, and the commercial charts often lack detail, especially once you get off the beaten World, and especially in SE Asia where we are now, are universally horrible. Recently updated charts of North America and Europe are often pretty good, but even they don't give the sort ofĭetail or accuracy that satellite imagery can. Way we'll attempt to explain some of the concepts, provide some tips, and we'll end with some moreĪdvanced topics that aren't necessary, but could be interesting. And the icing on the cake is that the tools and the data are all free! Along the This page is to show you how to automate much of this, so your computer can make you extremely detailed charts for your entireĬruising grounds easily. How best to display them so you can switch between them with a single keystroke. High level overview charts, how to load them into OpenCPN, and Then we'll explain how to make your first Programs are needed, how to install them, and how to set them up. Google Earth, Nokia, and others, as well as marine charts from Navionics and C‑Map. This article will attempt to explain, even to a novice, how to make your own high‑quality navigational marine chartsįor OpenCPN (or any navigation program that reads mbTiles) using satellite imagery from ArcGIS, Bing (Microsoft), We cover the following subjects in this article: Overview So if there's something you don't understand, please contact us. I've tried to write this page so even a novice can make high‑quality charts, Internet bandwidth and a Windows computer. The tools and data are all free on the internet, so all you have to add is time and Your charts with extremely high quality satellite imagery. This page explains how to make your own CMap and Navionics navigational charts for OpenCPN, as well as how to augment
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