Chapter 771 Nemo
There are many ways to reach your destination, it's not an either-or situation.
There is no terrain blocking between Easter Island and Point Nemo, only a vast ocean, but this does not mean that Bifang has to go in a straight line.
The function of a sail is to utilize various wind forces to obtain useful force for positive propulsion.
When sailing with wind or crosswind, just adjust the direction of the sail to obtain useful positive propulsion.
When encountering a slight headwind, you can also adjust the direction of the sail, convert the sideward wind force into sideward force, and sail forward in a zigzag manner.
【I see】
[So we are not actually heading towards Point Nemo now? ]
[Obviously, this is the case]
【Now is the time for detour! 】
"Z-shaped sailing is not exclusive to triangular or fore-and-aft sails. Ancient and medieval square sails and modern vertical sails can all sail against a headwind, but the angle is limited."
"In comparison, the fore-and-aft sail is only hung on one side, so there is more room for adjusting the wind direction, so the sailing angle is larger."
"When the angle of the headwind reaches a certain level and the normal wind can no longer meet the demand, we need to consider the tangential wind pull to pull the vehicle."
"According to the Bernoulli effect, vertical cross sails, fore-and-aft sails, gaff sails, and triangular sails can obtain greater pulling force, while square cross sails have almost no Bernoulli effect."
“But the tangential pull is not that big, it can’t be compared with the normal force, and secondly, it causes great damage to the sail, so it is just a reserved capability and will only be used in extreme cases.”
"When Koxinga recaptured Taishuiwan, the Dutchman's Maria, a gaff-rigged sailing ship, sailed against the monsoon, but the cost was that the sails were basically scrapped when it arrived in Batavia."
"Joseph Needham once summarized the sailing angles of various sails. The ability to sail within 45 degrees is basically based on the side wind, while the head wind, that is, the head wind, is theoretically impossible to sail with a sail."
Modern sailing racing is essentially a very technically complex competition.
In order to achieve the ultimate speed, the athletes need to have a comprehensive understanding and control of the wind to ensure that their sails can obtain the maximum thrust, and they must also have good physical strength, otherwise they will not have enough physical strength to operate the sails during the long competition.
[I used to think that sailing a boat was cool, but I didn’t expect it to be so elaborate]
【Fang Shen still knows more. 】
【Who is Joseph Needham? Who is Koxinga? 】
[Joseph Needham is a Chinese scientist. His Needham Question is on par with Qian's Question and is one of the core topics in the field of Chinese studies.]
[It’s understandable that Joseph Needham didn’t know, but it’s a bit strange that even Koxinga didn’t know]
The triangular cross sail is more conducive to sailing against the wind, mainly for two reasons: first, as a cross sail, the triangular cross sail is asymmetrical on both sides, and the direction of force is twice as much as that of the square cross sail. It can be sailed at the applicable angle of the longitudinal sail, and the sailing range is larger than that of the square sail.
In addition, it can utilize tangential wind, which naturally makes it the most suitable type of sail for sailing against the wind among traditional sails.
This is also the reason why Bifang is equipped with a triangular sail.
"It's just that in the late Middle Ages and modern times, the Arab triangular sailing ship Shebek carried the Barbary pirates to conquer all directions, which became the last glory of the Latin sail. With the development of European shipbuilding and firearms technology, it declined with the demise of the Barbary pirates in the late modern times."
"In the 19th century, even in the Indian Ocean, gaff sails were the main type of sails."
"In the 20th century, Arab tycoons began to promote retro sports in a big way, organizing triangular sailing sports to preserve the heritage."
There was plenty of food, and two fresh water devices were constantly distilling. It was the first time for Bifang to prepare so much for an adventure. For a moment, he didn't know what to do, and could only briefly share the history of sailing with the audience.
[You've never fought such a rich battle, right? (laughs)]
Bifang smiled and pointed at the thin rope flying on the sail.
"If you don't have an indicator on the top of your mast to tell which way the wind is blowing, tie some old magnetic tape, videotape, or oil line to the shrouds - the ropes that hold up the mast - and it will tell you which way the wind is blowing."
"However, some sailors find that tape is too sensitive to wind to be suitable. If you find the same problem, you can try videotape or oil line."
"Of course, you can also just feel the wind direction and learn to judge it with your ears."
"All you have to do is let the wind hit your back and slowly turn your head left and right until your ears feel 'balanced'. Once you find that spot, you know which direction the wind is blowing. With this method, you don't need your eyes to tell which direction the wind is blowing."
[No wonder, I was wondering why Lao Fang tied a rope on the bow, I thought it was a mark]
[Another small detail.]
【Bullfrog】
"For centuries, the ocean has fascinated sailors and explorers."
"In the poem 'Sea Fever,' John Masefield says he needs 'a great ship and a star to guide her' to feel complete in life."
"But entering the world of sailing is undoubtedly challenging . There are so many tricks involved. In the past, an experienced sailor was an extremely valuable strategic resource."
Bifang put the small fish on the hook and threw it into the sea.
While we have not yet completely entered the South Pacific circulation, there are still many fish resources nearby and you can still experience the fun of fishing. Otherwise, you may not have this experience in two days.
evening.
Bifang reeled in the fishing line.
They had been sailing for nearly six hours, and during these six hours, all Bifang could do was adjust the direction of the sail and see if there were any fish on the hook.
Fortunately, because it was the first day of sailing, the number of viewers in the live broadcast room remained above six million, and the peak data even exceeded ten million.
The wind at sea has become much weaker, and the entire ocean looks dead silent, which reminds people of the purpose of this voyage.
This feeling is very strange. Although we were both sailing on the ocean, this time it seemed even lonelier than the Atlantic Ocean trip. There was an indescribable creepy feeling.
[Why is Point Nemo called Point Nemo? Is it named after the person who discovered it? ]
[ Always reminds me of the clownfish in Finding Nemo]
"The origin of the name Nemo is actually very particular. When many people see 'Nemo', their first reaction may be the clown fish in Finding Nemo, but that is obviously not possible."
"But anyone who has seen 'Twenty Thousand Leagues Under the Sea' will never forget the resolute and courageous Captain Nemo, and the naming of Point Nemo is a tribute to Captain Nemo."
"Even more appropriately, 'Nemo' means 'no one' in Latin, which is undoubtedly a very appropriate name for such a lonely place."
