Use brass, steel-tipped dividers to span the distance on the chart you want to measure. Use the latitude scale up the side of the chart to read off the nautical miles.
DISTANCE AND DIRECTION
but it must be taken into account. This requires that a series of measurements ("swinging the compass") is taken to assess the deviation on different courses. The data is used to create a deviation card that can be used to add or subtract from the compass bearing to produce a true bearing. If there is any doubt, use a hand bearing compass to check bearings from a position right at the back of the boat.
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Lets start by identifying what exactly certain boats are. Sometimes the terminology can get lost on beginners, so well look at some of the most common boats and what theyre called. These boats are exactly what the name implies. They are meant to be used for fishing. Most fishing boats are powered by outboard motors, and many also have a trolling motor mounted on the bow. Bass boats can be made of aluminium or fibreglass.