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today weamp;#39;re going to be doing a little bit more chart work and taking a look at how you work out a course to steer imagine youamp;#39;re on this vessel and you want to get to this point up here if we measure the course from the chart it seems like we should steer 205 degrees true to get to our next waypoint but look what happens although weamp;#39;re steering 205 the track that weamp;#39;re making over the ground is less than that weamp;#39;re actually being affected by the tide which is setting us away from our intended track what we really want is to know the heading that we need to set so that we follow the track drawn on the chart we want to know the course to steer to start with letamp;#39;s make a few assumptions weamp;#39;ll assume our compass is really accurate with no error weamp;#39;re also going to assume thereamp;#39;s no variation in deviation so maybe weamp;#39;re using a fibre optic gyrocompass weamp;#39;re going to get some variation deviation in anoth
