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Yachting

Yachting

Soon after the appearance of the boat, people came up with the idea of ​​attaching a sail to it. On the other hand, luxury yachts cost millions and are available to the richest people, a symbol of respectability.

Who would not dream of learning how to navigate such a simple but wayward ship himself? The conquest of the sea is not easy, and the motor can help the sail. But learning to yachting and getting involved in it is hampered by numerous myths.

There are no storms on the lakes. The fact that on these bodies of water the banks are located nearby, and they themselves are usually shallow, inspires a sense of security. But it is the small sizes of the lakes that play a cruel joke with gullible yachtsmen. With the same wind strength, the wave here is three times higher than in the ocean. Waves bounce off nearby shores and amplify. Those who are confident in the veracity of this myth should walk along the lake with a sail in a strong wind, or at least read about the formation of waves.

Sailboats always take precedence when they meet. In 2011, an interesting story happened. The racing yacht Atalanta Chester did not give way to the oil tanker Hannah Knutsen. And it was the sailing ship's skipper who was found guilty of that incident. He was guided by a popular myth about the superiority of yachts. The fact is that a sailing vessel with engines is already considered an ordinary motor, albeit weak. In such a situation, yachts no longer have any advantage over other vessels.

Before wintering, the yacht must be fully refueled. At shipyards, it is not recommended to carry out such preparation for winter. It is believed that full filling of the tank with fuel will lead to the displacement of excess air from it and a decrease in condensate. This was until gasoline was often diluted with ethanol. On the one hand, it is able to absorb water. On the other hand, the ingress of a large amount of water into the fuel will lead to phase separation. Ethanol will be washed out of the fuel along with the octane number and water. In the spring, instead of gasoline, there will be an unusable slurry in the tank. And it will have to be removed with the help of hired third-party specialists.

Turbocharged boats are so powerful that they almost take off. For some reason, it is generally accepted that all turbocharged boats have either an engine from an aircraft, or even a jet drive. In fact, almost all such installations that are installed on yachts are borrowed from helicopters. Engines run with water through the transmission and propellers. If in speedboats this is done by a V-shaped drive on a straight shaft, then in catamarans, like the 15-meter Mystic Miss Geico, a BPM drive is already used, and the propeller is partially submerged in the water.

For the boat to be faster, the propeller must have the maximum number of blades. The fastest boats are racing speedboats. But they, accelerating to 300 km / h, have only two blades on their propellers. In his book The Nature of Boats, designer Dave Gerr generally states that single-blade propellers are the most efficient. The effect of strong vibration stops their use. With an increase in the number of blades, it is possible to reduce the undesirable phenomenon, but the speed will also drop.

Speedboat riders on the water are the most prone to accidents. The US Coast Guard claims that increased speed is not the main cause of accidents and deaths on the water, it is only the third most important. Factors such as alcohol and drugs are much more significant. It is also known that boats with stationary and outboard engines are more likely to be involved in accidents than designs with a sterndrive. The specifications state that most powerful boats are equipped with products of the second type. So the statement that fast boats are the main culprits of accidents on the water looks rather controversial.

The fuel level should not drop by more than half. This myth is based on the belief that pollutants can rise from the bottom of the tank and litter the fuel system. If these unwanted particles enter the engine, it will damage the engine. In fact, the fuel delivery system works so that fuel is taken from the bottom of the tank. So the motor always runs with fuel from the very bottom and does not experience any problems.

The engine will be destroyed by ethanol. Marine engines are fully compatible with E10 gasoline. It has a high ethanol content, which can burn without harm to itself. But if the fuel is stored in the tank for more than a month, problems may arise. A chemical reaction called phase separation starts. When the water level in the fuel reaches a certain level, ethanol will separate from the gasoline and form a layer at the bottom of the tank. The remaining fuel will lose its octane number and lubricating properties. This can adversely affect the engine itself. And the slurry that settles at the bottom of the tank will be even more dangerous. Once in the engine, she will immediately destroy it. So it is not ethanol that "kills" the engine; problems can arise during long-term storage of fuel with a high content of this substance.

Deadrise is the main sign of driving performance. This factor is very important, but far from the only one. The ratio of the yacht's length to its width plays a huge role. Thanks to the good proportions, the boat will slow down when re-entering the wave and go smoother. Other factors that must be taken into account when assessing driving performance are the distribution of centers of gravity and load on the bottom, hull contours and the ratio of displacement to length. The balance of all these characteristics will provide a comfortable boat ride.

Yachting is an expensive pleasure. It is known that skiing season in Vermont for a family of four will cost 4 thousand dollars. Compared to that, 2,500 in a boating season doesn't seem like much. A season ticket for a popular golf club can run up to $ 1,500. For a family, spending will increase significantly. Yachting turns out to be a much more profitable vacation.

Four-stroke outboard motors are more economical than two-stroke outboard motors. Fuel will have to be burned to provide engine power. Usually, the comparison is made between old carbureted two-strokes and new four-strokes with fuel injection systems. Fuel savings come from the improved fuel delivery system rather than the number of revolutions per cycle. When comparing modern two-stroke Evinrude E-Tec engines and modern four-stroke engines, the difference will not be particularly noticeable.

In order for the boat to swim better, it is necessary to wax its bottom. Alongside the racers and sailors, there are always agents who advertise magic wax. Allegedly, with its help, you can give the vessel an increased speed. But professionals do not fall for this advertisement. Racers have long noticed that a rough bottom is more advantageous for speed than a smooth one. This is because air trapped in uneven surfaces helps to reduce the friction of the case against water. And world champion Gary Ball says bluntly that grinding the bottom of the boat increases its speed, regardless of direction (except for the front and back). The pros use a shading technique where the stripes intersect at a 45 degree angle.

Do not store batteries on a concrete floor. It makes no difference where the batteries are stored - on a concrete floor, fluffy carpet or wood. The boards are still insulated with a plastic case. And this myth appeared when the battery cases were rubber. It was porous and moisture from the cement floor was causing the batteries to leak. But modern plastic cases are devoid of this drawback, there can be no talk of porosity.

The V-shaped hull allows the boat to be more maneuverable than catamarans. Those who believe in this myth should take a walk at least once on a high-speed DCB, MTI or Skater catamaran. Compared to boats with a deep V hull with transverse steps (Cigarette, Fountain or OuterLimits), the catamaran will be much more maneuverable and will accelerate faster. A boat with a tunnel hull and an outboard under the control of an experienced pilot can give an excellent idea of ​​how gravity acceleration works. Such a vessel will change direction very often.

An Arneson powered boat will not be able to park. Multiple world champion and co-owner of the TNT Custom Marine shipyard John Tomlinson suggests comparing the Arneson drive with a "six" or other motor with a partially submerged propeller. You should moor in the same way. And in order to provide better control when reversing, the propeller must be lowered deeper into the water.

It is safer to be on the boat while in motion than near the pier. When the boat is near the pier, only the weather threatens it. If mooring lines and fenders are present, then the boat is not afraid of either wind or waves, it will not collide with anyone and will not run into an underwater reef. And on the go, the integrity of the boat is ensured by many other factors. It is also important to consider the skill of your skipper, as well as the behavior of oncoming boats.

Visibility is 5 miles from boat on a clear day. This myth is destroyed by simple knowledge of trigonometry. The radius of our planet is 3440 miles. It is worth considering this, as well as the height above sea level of the organs of vision of the person standing on the deck. And to calculate how many miles of the horizon will be visible, you have to subtract the square root of the "eye height". For a person standing on the deck of a boat, the average is 6.6 feet. It follows that you will be able to see about 2.5 miles of horizon ahead. But going up to the bridge, you can already contemplate 3.6 miles.

Stainless steel is the best resistant to corrosion. For some reason, shipyards prefer to use bronze or plastic below the waterline. This is because stainless steel needs oxygen to resist corrosion. In the place where the fittings pass into the body, a humid microspace with a lack of oxygen is formed. In such conditions, stainless steel quickly rusts due to the process of crevice corrosion. It is common to see towing rings made of this material above the waterline and corroded inside.

The ebb and flow comes and goes. Many people have a wrong opinion about the ebb and flow. In fact, they are all the same long wave. When its crest reaches a certain point, we get a rush. And the lowest point of the decline forms the ebb.

You cannot go to sea with only one engine. If you talk to fishermen or cruisers who were forced to drift with the flow due to the failure of a single motor, then this statement will be confirmed. Just keep in mind that even the presence of several engines on the boat will not help if it hit the reef or there are problems with fuel. Many tugs, work boats and fishing boats get along just fine with one engine. And the secret is simple - quality timely service.


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