Best Hull - Rough Water

[Speedling]

 

[Speedling]

 

[robert843]

You can pretty much assume any dead rise listed on a spec sheet will be at the transom. The reason its listed there is it usually the least degree of angle of the hull usually the further forward you move the degree increases. I'm not sure what boat you have so I couldn't really comment much on that with out knowing the boat and model what the mfg spec sheet says and how you determined it was different from the spec sheet.

 

[Speedling]

I will grab a tool at work to measure it if i remember and will measure my boat front middle back. Perhaps we need a little research project?

 

[swatski]

I will grab a tool at work to measure it if i remember and will measure my boat front middle back. Perhaps we need a little research project?

@Speedling what are you wanting to measure? Do you have access to all three manufacturers? Maybe you can get a little sneaky at the next boat show and do some crawling around?

Aside from the number/actual deadrise angle, the new Yamaha hull "keel" is the key to the softer re-entry - when bouncing around in chop. When I was looking at a 230 to buy in 2016, @Bruce and I have had a discussion going about manufacturing one (a "keel") in a 230 hull. We dropped it, but it is an idea.

--

 

[Speedling]

@Speedling what are you wanting to measure? Do you have access to all three manufacturers? Maybe you can get a little sneaky at the next boat show and do some crawling around?

Aside from the number/actual deadrise angle, the new Yamaha hull "keel" is the key to the softer re-entry - when bouncing around in chop. When I was looking at a 230 to buy in 2016, @Bruce and I have had a discussion going about manufacturing one (a "keel") in a 230 hull. We dropped it, but it is an idea.

--

I wanna measure what my boat has exactly front middle and back and then we can start comparing models and brands. I bet the difference is very little but i am curious!

 

[Jgorm]

There deeper the v, and the longer the boat, the better they handle waves. I've been in lots of boats.

 

[Speedling]

There deeper the v, and the longer the boat, the better they handle waves. I've been in lots of boats.

Agreed, but they all advertise 20 degrees, and the same length so....?
I guess the keel can act as a slightly deeper v, the 255 is a bit longer, and a bit heavier.
As i was thinking about this a lot has to do with how it comes back down off a wave just as much as it cuts through. That is why the front angles matter so much as well. If the front has a steeper angle on brand x than brand y it will cut through better, and have a softer landing.
Another thing is how the water splashes off the bow when landing.
My favorite again is the carolina flare style boats. They push water away amazingly!
2nd boat in this video shows how the style hull works well

Actually the blue hull in that vid shows how that top flair really throws the water away as well.
I mean, that is a boat a bit out of my price range but still.

 

[112Vulcan]

Assume... but do not know for sure. I have a client that owns a local Grady White and Chap dealership, I'll give him a call tomorrow as I 'm very interested to know for sure.

That being said...the deadrise you have above on the 243 Vortex is 20 d

Agreed, but they all advertise 20 degrees, and the same length so....?
I guess the keel can act as a slightly deeper v, the 255 is a bit longer, and a bit heavier.
As i was thinking about this a lot has to do with how it comes back down off a wave just as much as it cuts through. That is why the front angles matter so much as well. If the front has a steeper angle on brand x than brand y it will cut through better, and have a softer landing.
Another thing is how the water splashes off the bow when landing.
My favorite again is the carolina flare style boats. They push water away amazingly!
2nd boat in this video shows how the style hull works well

Actually the blue hull in that vid shows how that top flair really throws the water away as well.
I mean, that is a boat a bit out of my price range but still.

That is great if you guys could measure! It would be good information for everyone.
Also, they don't all have 20 deg. Chaparral claims to have a 21 deg or their boat 246.

http://www.chaparralboats.com/Chaparral-Boat.php?id=403&action=tab_specs

 

[112Vulcan]

@Speedling what are you wanting to measure? Do you have access to all three manufacturers? Maybe you can get a little sneaky at the next boat show and do some crawling around?

Aside from the number/actual deadrise angle, the new Yamaha hull "keel" is the key to the softer re-entry - when bouncing around in chop. When I was looking at a 230 to buy in 2016, @Bruce and I have had a discussion going about manufacturing one (a "keel") in a 230 hull. We dropped it, but it is an idea.

--

Awesome picture! Where is this?

 

[robert843]

Assume... but do not know for sure. I have a client that owns a local Grady White and Chap dealership, I'll give him a call tomorrow as I 'm very interested to know for sure.

That being said...the deadrise you have above on the 243 Vortex is 20 d


That is great if you guys could measure! It would be good information for everyone.
Also, they don't all have 20 deg. Chaparral claims to have a 21 deg or their boat 246.

http://www.chaparralboats.com/Chaparral-Boat.php?id=403&action=tab_specs

No all boats do not have 20 degree you are correct we are referring specifically to the jet boats the 246 is not a jet boat its a I/O drive.

 

[swatski]

Awesome picture! Where is this?

Lake Mead, NV - Hoover Dam. What a spectacular place to boat.

--

 

[Jgorm]

https://www.thehulltruth.com/boating-forum/201591-deadrise-difference-rough-water.html
Good info.

 

[112Vulcan]

No all boats do not have 20 degree you are correct we are referring specifically to the jet boats the 246 is not a jet boat its a I/O drive.

My bad!

 

[112Vulcan]

Agreed, but they all advertise 20 degrees, and the same length so....?
I guess the keel can act as a slightly deeper v, the 255 is a bit longer, and a bit heavier.
As i was thinking about this a lot has to do with how it comes back down off a wave just as much as it cuts through. That is why the front angles matter so much as well. If the front has a steeper angle on brand x than brand y it will cut through better, and have a softer landing.
Another thing is how the water splashes off the bow when landing.
My favorite again is the carolina flare style boats. They push water away amazingly!
2nd boat in this video shows how the style hull works well

Actually the blue hull in that vid shows how that top flair really throws the water away as well.
I mean, that is a boat a bit out of my price range but still.

Those are some bad azz boats!

 

[Speedling]

I couldn't find my oversized tool. I may need to improvise. We had something made up once for doing masonry stuff. Doesn't seem to exist anymore