Toolbox What instruments will you need to enable fixing your position on a chart? Symbols Why are there different symbols used on a chart to show your position? Sextant How can you use a sextant to fix your position? Calculations How can you calculate either your speed, distance or time given two of the three other values? Variation / Deviation Why do you need to factor in these two influences. Tide What references will provide you with the information you need about tide? Position fix How many ways can you fix your position? Can you name them? Electronic aids Apart from a Chart Plotter what other electronic aids can you use to fix your position.