Video 3.4.1 The mast

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來自 Universitat de Barcelona 的課程

Strategies for winning. Meteorology in a round the world regatta

45 個評分

Universitat de Barcelona

Strategies for winning. Meteorology in a round the world regatta

45 個評分

In this course you can learn about the mechanics of global weather, the foundations of ocean meteorology, predictive modeling and how sailors receive data via satellite and use high-performance navigation software. This course looks at oceanic meteorology and climatology through the lens of the sport of sailing. You will gain a basic knowledge of meteorology needed by sailors to take part in a regatta such as the Barcelona World Race, the only double-handed, round the world regatta with no stops. You will learn about the strategies employed during a round the world regatta and how these are put to use on board the latest ocean racing yachts.

從本節課中

The sailor as meteorologist

In this module you will learn how sailors use meteorology to sail around the world and to win round the world regattas. All of their interest is focussed on the wind and they need theoretical, but above all practical, knowledge to help them to take the correct decisions at sea. Remember you can access to the help forum. If you are experiencing difficulty learning or accessing course content, or if you simply want more information.

Video 3.4.1 The mast3:53

Video 3.4.2 Onboard electronics1:26

Video 3.4.3 Satellite communications3:45

Video 3.4.4 The autopilot3:47

Video 3.4.5 The central computer3:38

Video 3.4.6 The main issues with onboard electronics5:18

與講師見面

Tomàs Molina

[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.

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