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World's Most Advanced Hydrofoil Boats Fly Above Water

World's Most Advanced Hydrofoil Boats Fly Above Water
i don't know if you can hear that but it sounds like they're literally cutting through the

water

and with those hydropowers underneath they kind of are the

boats

are so efficient and so powerful they can do four times the speed of the wind it's unbelievable who's fastest to mark one the

boats

are up and foiling this is sail gp a high speed high impact race featuring the

world

's

most

advanced

hydrofoil

sail

boats

eight countries with six crew soaring across the

water

at speeds
world s most advanced hydrofoil boats fly above water
of up to 60 miles per hour all thanks to an

advanced

hydrofoil

design that means these

boats

aren't cruising they're flying as the teams prepare for their final race of the season we go behind the scenes to learn how these

boats

are designed and built to push the limits of physics and human strength here in san francisco the eight teams competing in sail gp are putting the final touches on their

boats

ahead of the grand final the

world

's best sailors are getting ready to hit the

water

in one of the

world

's fastest and

most

advanced

sail

boats

the really interesting thing is they all use the same boat the f50 and that's what's behind me it's an incredibly streamlined boat this isn't the power boat that you're taking out fishing on the weekend the angles the shape everything about this boat is designed to get incredibly high speeds in the

water

it's kind of like formula one but for sailing each f50 takes about six months to build the carbon
fiber design is based on the ac50 catamarans that were used by all the teams in the 2017 americas cup the wind power comes from a rigid wing the wing is modular the standard height for racing is 24 meters but it can be scaled up to 29 meters on low wind days and down to 18 meters when conditions are more extreme crew members use these controllers to fine-tune the position of the boat on the

water

correcting its pitch and the angle of attack and about a thousand sensors across the boat generate
more than 30 000 data points making this one of the

most

advanced

catamarans in the

world

while the electronics and sensors run on solar powered batteries the boat itself gets its power from the wind and the

water

and those high speeds are all thanks to some pretty simple physics so when you're watching a sail gp race there is a lot of action happening on top of the

water

with the crew manically moving about but the real action happens down here under

water

now this is a

hydrofoil

it's
known as the dagger board essentially it acts like an airplane wing so

water

moves above and below this foil which generates lift lifting the boat out of the

water

which reduces drag and that's where you get those really high speeds there are four

hydrofoil

s on the f50 two curved dagger boards towards the front and two t-shaped rudders at the back when the boat gets up to speed on the race course you can actually see these foils lifting the hull out of the

water

sail gp has been running
for two seasons with races in some of the

world

's

most

famous harbour destinations from santro pay in france to sydney harbour in australia here in san francisco the eight teams have another iconic sailing backdrop as they tack between alcatraz and the golden gate bridge it's here that team usa is hoping to get their first win on home soil or home

water

at least leading that charge is team usa captain jimmy spittle spittle grew up in australia taking a tin dinghy to and from school every
world s most advanced hydrofoil boats fly above water
day and learning to sail instead of watching tv spittle took up racing professionally and became a champion of the america's cup racing seven times and winning twice now he's chasing a sale gp championship when you think about the speeds you know there's no seat belts there's no airbags you know you've got carbon fiber missiles you know launching around the track on the engine control look at the british boat leap out of the

water

if you don't get it right there's
some serious consequences it's like getting in a formula one car when you make the turn while spindle is in the driver's seat there are five more crew members all working in sync to make the boat sail really fast at the front of the boat two grinders power a winch that moves the position of the big wing sail next up is the flight controller who controls the angle of attack on the

hydrofoil

s this is very much like a gaming console a bunch of different functions you can perform the
difference being is that instead of looking at a tv screen it's reality the flight controller determines how high the boat flies out of the

water

too low and the boat doesn't hit those fast

hydrofoil

speeds too high and it can become unstable and crash or even worse cap size behind the flight controller the wing trimmer controls the strategic position of the wing and then you have the helmsman where spittle sits driving the boat communicating with the crew and deciding how to attack the
race course in 2021 sail gp added a sixth crew member at the back of the boat the strategist on team usa that strategist seat is crewed by 18 year old cj perez being in the sixth position or the strategist position you're doing multiple things so while all of the other roles they're being super focused on you know either driving or controlling the rake of the foils you need one person to really keep their your eyes outside of the boat so for me i'm looking at other

boats

around us
making sure that we don't crash into anybody which has happened a lot this past season during the race there's no time for mistakes the crew communicate on headsets so they can hear each other over the roar of the wind all the buttons have raised surfaces so they can feel the controls without taking their eyes off the race the crew has to work in unison making split-second decisions while they fly through the

water

at 50 or 60 miles an hour and if that wasn't enough when they
maneuver into the wind the team has to run across the sailboat and drive from the opposite side swapping sides is probably one of the

most

challenging things on the boat when you're going at high speeds racing the only way i could describe it it would be like honestly getting on the roof of a car blindfolded and someone just driving a rally course there's lots of points where it's just super high pressure and everyone on the team needs to stay calm and collected i think that's
world s most advanced hydrofoil boats fly above water
the point where the boat will go fastest all right so this might look easy because i'm doing it and i'm really tough but essentially when you are trying to steer and control a 2.4 ton sailboat this grinding job becomes very difficult what you're essentially doing here is moving this piece here which is connected to the winch which is connected to the wing now that's the giant sail and that's where you're getting all the speed standing inside the f50 you really get a
sense of just how intense this racing is and i'm not even out on the

water

being hit by 30 mile an hour winds and huge waves cell gp is physically and mentally demanding and winning comes down to a mix of precision engineering strategy and pure human grit so when the

boats

come past behind me at speed you can see they're not actually sitting on the

water

they're actually lifted up above it and that's because of the

hydrofoil

underneath so australia's about to come past look
beneath the boat you can see those

hydrofoil

s the daggerboards sticking down into the

water

that's why it gets to such high speeds go australia seeing these

boats

up close out on the

water

you can really see just how fast they're going they whistle through the air when they get up to speed and when they maneuver it looks like they're turning on a dime because everyone is working with the same hardware winning is really down to the skill of the sailors reading the race and working the
wind but the eight countries competing don't just use the same

boats

all the teams have access to each other's data so team usa can see the data of the australian team and australian team can see the data of the british team when they're on the

water

each of these sail

boats

generates roughly 1 000 data requests per second everything from the angle of the wing the load on the

hydrofoil

s even down to how many times a button has been pressed on the steering wheel that adds up to 40
billion data requests in a single afternoon of racing no matter where they are in the

world

the sail gp

boats

feed all of that data back to an oracle data center in london from here in the san francisco bay the data team in london gets that information in 0.18 seconds that crew in london is also controlling one of the two cameras on the boat which can be moved in real time to capture the best angles of the race the data gives the crew vital stats while they race but the

most

important part comes
after the racing is done when the team uses this information to study how they performed over every single part of the racecourse every time these

boats

are on the

water

we're learning it's all about the athletes on these

boats

and it's how they want to how they want to push the boat but they have the data there to give them the information of how to do that cell gp has only been running for two seasons and the organisers are already looking towards the future honing the

boats

cutting down race times and diving deeper into the stats on each boat and each course they're even looking at adding features like collision avoidance but ultimately while computers and data will always be a key part of this race you won't see ai driven

boats

on the

water

with cell gp anytime soon when everybody gets on the race course no one's got a faster engine or everybody's looking for the wind and therefore then it's all about the athletes rather than the the machines
when it came to athletes and machines the grand final weekend didn't disappoint team usa had a huge setback on opening day when the spanish team crashed into their boat the us rallied and eventually finished third in the grand final behind japan and australia but it's not over the teams are heading off to bermuda for the start of the next season the f50 is the coolest boat in the

world

the hum of the foils and hearing the winches turning it just fills you up with so much excitement and
nervousness just a ton of feelings and that's the type of stuff that you just live for the big question for me is do you get addicted to that speed are you are you like a total speed junkie now that you have to kind of go this fast yes yeah you can't go back i mean look once you get a taste for it you're always hungry for it and every time you go foiling you hit those top speeds you just want to wake up the next day and go for more you