Official OpenCPN Homepage

A Chartplotter and GPS Navigation Software. OpenCPN is a free software (GPLv2) project to create a concise chart plotter and navigation software, for use underway or as a planning tool. OpenCPN is developed by a team of active sailors using real world conditions for program testing and refinement. The most recent stable version, OpenCPN 4.4.0, was published on 13 June 2016 and can be downloaded from opencpn.org/ocpn/download.What is new in 4.4.0? Features Worldwide, standard, S57 and encrypted S63 vector chart support. Platforms * Windows XP SP3 , Vista, 7, 8, 8.1 and 10 * Linux, BSD, Solaris * Apple Macintosh OS X Participate OpenCPN is under active development, and we are always looking for contributions such as: The OpenCPN original FAQ Not everyone can contribute with code, but please consider helping out financially. It'easy to donate through PayPal. It's also possible to find a donate button in OpenCPN. Locate and press in the toolbar. Press the "Donate" button and follow the instructions.

Medieval and Twentieth Century Navigation The animation above depicts the means Columbus and mariners of the fifteenth century determined their location on the sea. They used simple arithmetic and a technique called Dead Reckoning Navigation. (Actually, Columbus judged the ship's speed through his own version of dead reckoning. Knowing the time elapsed between changes in his vessel's speed and direction of travel, Columbus entered his estimate of distances in a log. Rather than using a float to determine speed, Columbus, from his "feel" of the keel moving through the water along with his sense of wind and sail behavior, "knew" fairly accurately what the ship's speed was.) Here's how it worked: First of all, the navigator had to collect some articles to make a system which could "dead-reckon". Items Above Comprised Dead Reckoning Navigation The Process From arithmetic, we know that distance traveled in a selected direction is determined by multiplying speed by the time the vehicle travels at the chosen speed. Questions:1. 2. 3.

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