The Garmin 73sv screen measures 7″ wide horizontally, not diagonally like a TV. Your best navigation tool will always be between your ears. Then correlate everything with what you can actually see with your eyes. Compare it with the digital map and take note of the differences. ![]() Always have a paper map for the area where you’re sailing, even if it’s just a backup in case your chartplotter fails. So if you decide to use a chartplotter, learn to use it well, but don’t rely on it as your only map. Vestas Wind nearly destroyed in 2015 Volvo Ocean Race due to navigation error worsened by digital map That can be easy to forget and many captains have accidentally grounded their boats on obstacles that weren’t visible on their devices, even expert captains racing around the world in the most technologically advanced sailboats ever designed. There could be a reef, rocks, or pilings that aren’t showing up on your device because you’re zoomed out to far. This means that you’re always only seeing a portion of the data. To compensate for this, they hide details that would be too small to display at the current screen resolution and zoom factor until you zoom in further. One weakness of all devices of this type is that they can only display a certain amount of information on the screen at a time. CautionĮlectronic devices (chartplotters, GPS units, cell phones, etc.) should not be used as a replacement for paper maps and direct observation. In this review, I will focus on the features that I feel are most interesting to the readers of this blog, stingy sailors. The Garmin 73sv is chocked full of features and you can read about them all elsewhere. For a complete explanation of why I’m telling you this and how you can support this blog without paying more, please read my full disclosure. Those commissions help to pay the costs associated with running this site so that it stays free for everyone to enjoy. That means I receive a small commission if you make a purchase using those links. I’ll give you my objective evaluation in this review.īefore I continue, a bit of legal housekeeping. For these reasons, I bit the bullet and installed a Garmin ECHOMAP UHD 73sv chartplotter. And there’s my failure to get my handheld GPS to play nice with my tiller autopilot that nags at me. ![]() ![]() I’m also seriously considering cruising the San Juan Islands off the Washington state coast. But recently, I’ve challenged myself to do more fishing and I haven’t been very successful yet at filling up my electric smoker. Up to now, I’ve answered that I didn’t have a need for one and that my handheld GPS worked fine for my needs. I’ve been asked many times if I have a chartplotter on Summer Dance.
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