![]() ![]() It may be termed differently, but the legal position generally is that an ECS is for "general situational awareness", "may contain errors", "no liability accepted". A quick check of the fine print in most ECS manuals will alert you to this fact. Any electronic "chart" which is not an ENC is unlikely to be considered "fit for navigation". These can be similar in appearance to a paper chart or ENC, or follow a completely different line of symbology. ![]() Charts can be raster (pictures of the paper chart), or commercially produced versions with simple line drawings of contours, spot depths, etc. The charts used in generic ECSs ,come in a variety of forms. Because of this, most ECSs are NOT recognised as an alternative to paper charts. The main trouble with ECS comes from the lack of agreed standards of production or the versions of the charts that they use. While most ECS aren't as refined as an ECDIS, they can still provide good situational awareness to the operator, providing their limitations are known. The term "ECS" covers any electronic system which displays charts or navigation information, which is not an approved ECDIS. The complexity and cost of ECDIS generally results in smaller operators purchasing a Electronic Chart System (ECS). It is extremely important to know exactly what type of electronic chart you are buying as they differ greatly in quality, accuracy and precision. There are many products on the market, which may appear to be, or contain, ENC. Other forms of Electronic Charts & Chart Systems ![]()
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