Live Streaming: Great Adventure in the Wilderness

The heavy hull dragged across the beach, with the wooden planks and gravel emitting a faint frictional noise, shattering into tiny granules of sand.

The white froth lapped the shore, coming into contact with the whitewood hull, moisturizing it to a dark gray.

As the resistance grew lighter, Bi Fang mustered all his strength and finally pushed the canoe into the open sea.

The two connected boats floated on the surface of the water, parting the oncoming waves, as the sea flowed through the gaps of the connecting platforms.

Seagulls soared along the skyline, and the waves glistened.

Above the mast, the thin ropes fluttered in the wind, twisting like wild snakes.

Today was a rare day with a strong wind.

As an island, it wouldn't normally have temperature differences large enough to produce sea breezes, but Easter Island was so vast that the vast sea wind charged from thousands of kilometers of open sea toward the land, majestically.

For a canoe equipped with sails, it wasn't suitable to go to sea, but the sail Bi Fang used was the Latin triangular sail; as a professional survival expert, he was meant to sail against the wind with a triangular sail!

"Are you ready?"

The audience responded enthusiastically, familiar opening lines already enlivening the entire venue; without further ado, a barrage of messages flooded the live stream.

[Ready!]

[Yes, Captain Bi Fang.]

[Too quiet, how can you run a battleship with such a soft voice?]

Everyone looked at Bi Fang with anticipation.

Tourists on the beach stood on tiptoes, holding up their cellphones to record.

The audience sent gifts and barrages of messages.

Just as everyone thought the show was about to begin, Bi Fang suddenly broke into a grin, "Who lives in a big pineapple under the sea?"

Everyone was taken aback, not understanding why Bi Fang suddenly blurted out such a line.

But those who reacted quickly immediately responded with messages.

[SpongeBob SquarePants!]

[No, it's Captain Bi Fang!]

[Dirty~~~]

[Too many elements]

[The next line is 'rectangular and yellow, flexible and pliable!']

The sudden bantering eased the tense atmosphere, adding a touch of relaxation and pleasure.

"Rectangular and yellow, flexible and pliable!"

[SpongeBob SquarePants!]

"If adventure is what you wish."

[SpongeBob SquarePants!]

Bi Fang, stepping on the seawater, jumped onto the platform and struck the hull with a wooden stick, creating a distinctive 'bong bong' sound, like some unique prelude.

"Then knock on the deck to clear the way for the big fish!"

The canoe bobbed with the waves, Bi Fang extended his right arm, wrapping the hemp rope around it several times, and from top to bottom, pulled diagonally with force.

The hemp rope and the wooden pole rubbed violently, producing an intense whipping noise.

"Wha-la!"

The pure white sailcloth was hoisted, and the fierce wind instantly billowed the large sail.

Bi Fang, holding the ropes, jumped onto the Viking, adjusted the sail's direction, and the entire triangular sail sliced through the wind like a blade.

The sudden weight made the aircraft carrier sink sharply, and then, supported by the Viking and buoyancy, it sprang up violently, bringing up a lot of seawater.

Smoothly contoured arms pulled the tactile halyards, and the cool seawater splashed on the bare chest, exhilarating and carefree.

The triangular sail, full at the front and slack at the back, like an airplane's wing, created a huge lift on the canoe, cutting through the water and accelerating forward.

"Charge!"

"Keep on going!"

"Easter Island will record this moment!"

Onshore, people were shouting, cheering, and screaming; the voices were loud but stretched and faded into the distance.

The canoe's speed increased, the cheers from behind grew fainter, and when Bi Fang turned back to look, they were barely noticeable.

Bi Fang laughed heartily, constantly adjusting the sails, using the direction of the ropes on the mast to confirm the wind direction, always keeping the sailboat in the position where the lift or thrust was greatest.

This was also the most challenging part for the skill of the driver.

[Charge!]

[I've watched sailing championships before, and they were damn impressive. I've always had a dream, which is to sail across lakes and oceans. However, I never had the chance. Watching this live stream is like fulfilling that dream indirectly (crying)]

[By the way, why can it move forward against the wind...]

[To the one above, you obviously didn't do well in physics, clearly, this is basic knowledge of quantum mechanics]

[I'm not highly educated, don't try to fool me]

[15 centimeters not including the head gifted to the host for a yacht*1—Master Fang is too cool!]

[Bearded Baby Bottle gifted to the host Big Bone*66—Damn these chest muscles, damn these biceps, damn these shark gills, absolutely licking]

"This is very simple." After stabilizing, Bi Fang fixed the halyard to the mast and took a moment to glance at the barrage, "There are broadly two types of forces that the sails can utilize: direct and tangential wind."

"The direct wind is easy to understand, it's about capturing the force of the wind striking the back of the sail directly and pushing the boat forward. This is Newton's action and reaction force."

"When sailing downwind, the sails are in a 'billowed' shape, which is the best working condition. The larger the sail area, the greater the wind thrust, hence square sails, including square rigs and Latin triangular sails, are very suitable for downwind cruising."

"The principle behind it is simple; Newton's third law concerning action and reaction."

"Wind coming from the side that reflects off the back of the sail also produces thrust. No matter the angle of incidence, as long as it is from behind, it can provide a certain thrust. This is the generated tangential force that pulls the boat forward, and anyone who has studied force analysis should know this."

"However, utilizing headwinds is more complicated, it involves the Coanda effect force and the Bernoulli effect force."

[Sorry, I only finished elementary school, what are those two things?]

[Lucky I studied fluid dynamics in college, otherwise I really wouldn't understand (Dog's head)]

[Physics master · Fang, online]

[Teacher Fang's class is starting kids, if you're not good at physics, you probably don't watch enough live streams, a beating will fix it]

"According to the Coanda effect, when a gas or liquid enters tangentially to a surface, it will follow a convex surface. The laminar flow along a curved surface will continue to adhere to the same surface."

"This deviation from a straight flow will produce a force on the sail along the curved surface, resulting in a force perpendicular to the sail. This force is mainly utilized in modern wing sails."

After securing the halyard, Bi Fang sat inside the Viking.

"Based on the Bernoulli principle, when the wind blows tangentially across both sides of the sail, the airflow on the front side passing over a curved surface then recombines with the airflow on the back side, creating a chord stream flowing backwards, which means the quick airflow on the front side of the convex surface reduces its internal pressure relative to the other side."

"Bernoulli's principle is a part of fluid mechanics, generally only covered in university specialized courses. So, it might be unfamiliar to most, but its applications are well-known. That is, the pressure difference creates a 'lift' perpendicular to the sail—similar to how airplane wings work."

[I know this, I learned it in middle school physics (covering face)]

[Finally, something familiar]

[So it's basically saying we can fly against the wind, right?]

"It's not that exaggerated. Basically, you can with side or headwinds to an extent, but directly into a headwind theoretically isn't possible. Though complete headwinds are also rare in actual navigation."