[MUSIC] Obviously the mast is the one that gives us power to navigate. And here is the one that uses the wind that transmits in force. And I'm coming to what we call the top is on the site or location where we will accommodate three components absolutely necessary for navigation. The first most important point is this, which is where you place navigation lights so that we can be seen by airplanes, boats, etc. Then we have this antenna that will allow us to be able to communicate via UDHF radio with other boats or when we arrive at port. And, finally, the most delicate and important of the boat, I am referring to the wind sensor. We call it "percha" or wind wand in English and this one houses two very important sensors. This sensor here, which is the one that tells us where the wind comes from. And the other, anemometer, or wind meter is the one that will allow us to know what intensity of wind we have, and know exactly if the wind is going up or down. The data captured by the sensor, weather the wind intensity or direction, are transmitted by this cable to the lower part of the mast. This information is received by the navigation processor that through mathematical calculations can tell us exactly where the wind comes from and at what speed it comes. This information is absolutely vital as knowing this data, person driving the boat can adjust the position of the sails so that the speed of that boat is the ideal one, or, we can sail to the course that we want. This component, being so important in racing boats, comes in pair. That is, we usually install two wind sensors, in case one has a fault, to be able to switch directly to another. Obviously, if the breaks are greater than anticipated, the skipper will be forced to climb to the top of the mast to, repair the part that is damaged or replace. In other words, high competition boats are usually fitted with two of this to do a replacement. Because you have to think about something very important, the whole system of automatic piloting of the boat works on wind. If these data are erroneous, the boat won't be handled correctly. Therefore, it is an obsession, both the calibration of these components as well as their smooth operation. Obviously, this information is so important, that it is also transmitted to what is the brain of the boat, I am referring to the central computer for navigation.
