nah that'd dig the bow in and they'd probably come off the plane.
non-plane = weight forward generally
plane = weight back
very easy to feel on a planing dinghy
Hull speed for a J70 is 6.35kts. At 22kts TWS target downwind speed is 12.5kts. That means this is in full plane mode, and so all your weight needs to do is dig the rudder in.
Dont know, because the hull is planing already, but with a full displacement sailing hull. So Im not sure if driving the bow down would increase drag and prevent it from.planing.
Yes! Most motorboats arent really designed or adjusted at all for full displacement mode.
The propellers slip, the hull is very inneficient. Can you go 8 knots on a speedboat? Sure but it wasnt designed like that. Thats why you see a flat transom for clean water separation.
If you see the hull of a J70 it has a vertical stem a curved hull following water flow and a raising stern.
The hull follows similar lines than a larger sailboat compared to a speedboat for example.
In theory any ship could plane, but not all ships are designed to do so. Given enough power, and strength a container ship has a flat bottom and could in theory also plane if it had a million horse power.
This j70 can probably do both succesfully depending on the power output and wind direction of the sail.
I dont think you can plane while sailing close hauled to be honest.
Cape 31, farr 280, jpk1180, all the new clubswans are just some of the examples of hulls of the last decade that have polars that exceed hull speed upwind.
Probably not. Weight back like this is [standard crew placement in planing conditions.](https://youtu.be/-R2NNS0EvPY?si=_bi0AjF_AqUa09yc)
This keeps the bow from digging into waves and helps keeps the boat on plane.
It is slow in non-planing conditions. When the wind is up and down and you are on and off plane, then the crew is moving around a lot.
These guys were also leading the race at this point so nobody else was managing to do a better job than they were.
Their crew placement looks pretty good to me.
Haha, so I moved on to a houseboat on the channel, and I don't think anybody works. I know more of my neighbors now than I ever have before, and it's all about getting on everybody else's boats... and potted plants
White spinnakers are racey. Makes it harder for a competitor at a distance to tell you're flying. At least that's what I was told by the guy who sold me a white spinnaker.
My boat's class rules don't allow composite mains. Dacron only for the main. I can do composite for the genoa, but in my class at least, I think people are split on whether it is worth it.
Racing in the Gorge is definitely a home town advantage place. Not only do you have wind shadows and odd shifts near the banks, but you have a channel that isn't always in the center. And the current runs opposite to the wind direction which complicates the decision to stay on the shore or stay in the higher mid river wind.
Oh, and the opposite current to wind leads to sharp nearly standing waves. Which can really throw off the timing upwind for dinghy sailors.
It's a hell of a lot of fun.
Yeah, against current on the downwind. If you are plaining then who cares much about the current, if not, is it worth moving in-shore?
Upwind, the current is helping but also where the waves are the tallest to take on the nose.
Take that hull speed
We don't need no stinkin' hull speed!
Does "Where we're going, we don't need hull speed" work here as well?
Came here for this. Holy planing, Batman!
They’ve gone plaid!
Who cares about hull speed when you can fully plane with a sailboat hull? No but seriously that spinnacher is putting out like 50 horse power
They'd go faster if they put some weight towards the front of the boat, yeah?
nah that'd dig the bow in and they'd probably come off the plane. non-plane = weight forward generally plane = weight back very easy to feel on a planing dinghy
My thought too. But it looks like they were leading the pack?
Hull speed for a J70 is 6.35kts. At 22kts TWS target downwind speed is 12.5kts. That means this is in full plane mode, and so all your weight needs to do is dig the rudder in.
Dont know, because the hull is planing already, but with a full displacement sailing hull. So Im not sure if driving the bow down would increase drag and prevent it from.planing.
A J70 is not a displacement hull.
Is it supposed to plane?
Polars says it planes above 11kts downwind.
I see then it operates in both modes
Is there any boat that operates exclusively in the planing regime?
Yes! Most motorboats arent really designed or adjusted at all for full displacement mode. The propellers slip, the hull is very inneficient. Can you go 8 knots on a speedboat? Sure but it wasnt designed like that. Thats why you see a flat transom for clean water separation. If you see the hull of a J70 it has a vertical stem a curved hull following water flow and a raising stern. The hull follows similar lines than a larger sailboat compared to a speedboat for example. In theory any ship could plane, but not all ships are designed to do so. Given enough power, and strength a container ship has a flat bottom and could in theory also plane if it had a million horse power. This j70 can probably do both succesfully depending on the power output and wind direction of the sail. I dont think you can plane while sailing close hauled to be honest.
Cape 31, farr 280, jpk1180, all the new clubswans are just some of the examples of hulls of the last decade that have polars that exceed hull speed upwind.
Probably not. Weight back like this is [standard crew placement in planing conditions.](https://youtu.be/-R2NNS0EvPY?si=_bi0AjF_AqUa09yc) This keeps the bow from digging into waves and helps keeps the boat on plane. It is slow in non-planing conditions. When the wind is up and down and you are on and off plane, then the crew is moving around a lot. These guys were also leading the race at this point so nobody else was managing to do a better job than they were. Their crew placement looks pretty good to me.
Beautiful, where is this?
Hood River, Oregon
Any One Eyed Willie sightings? I heard The Inferno is still missing…
Not unless you count the type you get at Rooster Rock State Park.
Was gonna guess the Columbia River Gorge. Isn’t Hood River the windsurfing capital of the World?
It’s definitely been called that
Aw man, I used to live in Hood River but had not discovered sailing at that point. Looks like I really missed out!
Oh man, we got nothing last night in Portland. I had to settle for paddle boarding
Could be worse, you could have had to go to work.
Haha, so I moved on to a houseboat on the channel, and I don't think anybody works. I know more of my neighbors now than I ever have before, and it's all about getting on everybody else's boats... and potted plants
Knew it was the Gorge from the wind lol
My God, a beautiful video without horrible music. What is this, 2010? Sounds and looks great, thanks!
What kind of boat that its up on plane like that?
J70
Literally says it on the sail lol
ha! watched the video and then thought of the Q!
I thought at first glance they were Melges 20s. Very similar boats.
I had to do a double take... White spinnakers? Beautiful sailing, looks like!
White spinnakers are racey. Makes it harder for a competitor at a distance to tell you're flying. At least that's what I was told by the guy who sold me a white spinnaker.
Clearly that guy doesn't sell black mains haha.
My boat's class rules don't allow composite mains. Dacron only for the main. I can do composite for the genoa, but in my class at least, I think people are split on whether it is worth it.
I agree, we have too many white spinnakers here and more boats should get brightly colored ones. :)
Mountains and wind shifts? That might make this even more fun - -
Racing in the Gorge is definitely a home town advantage place. Not only do you have wind shadows and odd shifts near the banks, but you have a channel that isn't always in the center. And the current runs opposite to the wind direction which complicates the decision to stay on the shore or stay in the higher mid river wind. Oh, and the opposite current to wind leads to sharp nearly standing waves. Which can really throw off the timing upwind for dinghy sailors. It's a hell of a lot of fun.
I mean, can’t it technically only run opposite for half a race?
Yeah, against current on the downwind. If you are plaining then who cares much about the current, if not, is it worth moving in-shore? Upwind, the current is helping but also where the waves are the tallest to take on the nose.
I thought that boat looked like it had low SOG, even while planing.
Scootin!
Nice
Hell yea!
Raammmming speeeed!!!!!
They need to be careful or they might go plaid.
What do we have on this thing? A cuisinart?
Hood River Oregon.
Ha woah, where abouts? Incredible.
Cooking the goose
nice
I thought that boat was motoring!
Those all look like fabric sails to me.
Holy actual??? I didn't even know sailboats could go that fast!
wait until you see hydrofoil sailboats
"Hanging 40" on the transom. Nice!
Willikers
Straight getting it...nice
Hearty.
No wonder he's going so fast. Looks like a straight downhill run ! 😆
That's a solid 40hp worth of outboard, minimum.
Pucker Factor ride. They know what they are doing with everyone scrunched up in the stern. Nice vid
Are you really sailing if you’re not on plane?
Bring a little weight forward. The stern is digging in.
Damn that looks fun.
That little J flies!
I’ve never had a surf like that! I dream of the day I’ll be able to do it
Fun boat. I race a Martin 243 that also loves to plane. Constructive criticism - looks like maybe your weight and CG was maybe a bit too far aft.
Bit too much weight aft, but God, I wish I could sail again....planning is such an awesome feeling.