255 vs 225 water length

fsmithjack · Mar 18, 2024

The GW 225 is 22 feet and folks say the bracket adds about 3 feet for 25 feet total. The same folks say the 255 is 24.9 long. Are they about the same as far outside water surface and ability to perform in crappy water or no? This will help with my buying decision so thank you for the help. There is not much on this anywhere else.

i know the 255 is a bigger, heavier, nicer and more expensive boat but curious about my above question. Thanks

seasick · Mar 18, 2024

Although a bit simplistic, for V hulls, a wider beam will be more stable than a similar length boat with a narrower beam. Same for weight ( actually displacement). A heavier boat will be more stable than a similar length lighter boat. To an extent length to beam ratio can be a big factor ( think canoes

)

For your comparison, the overall length of the boat is not as important as is the length over water. Although one model has a 3 foot bracket, it doesn't significantly change the length over water. For that reason you can't just compare overall lengths.

Ekea · Mar 18, 2024

like seasick said, the bracket doesnt really add to the waterline length, especially when on plane. at displacement speeds, it will be in the water and provide some effect of a longer hull, but it will be very minimal since it is so narrow. at planing speeds, the bracket shouldnt be touching the water, so no change in hull length in water. now with the engines farther back, would a stern lifting prop have more leverage and be more noticable? maybe, but i cant give a knowledgable answer to how that plays out

fsmithjack · Mar 18, 2024

I know it extends the engine and along the waterline in line with the engine so I know the 255 is better but I’m wondering what type of impact the bracket has verse without it in relation to the bigger boat and different performance between the 2. Even the beam is only 6 inches which matter don’t get me wrong but it’s not a huge difference.

DennisG01 · Mar 18, 2024

I'm not sure what "folks say" means, but go look at the model specific info on Grady's site for definitive info on length. "Sometimes" you'll even get lucky and see the waterline length listed (WLL or something similar). But, regardless, for comparison between the two boats vs their respective hull lengths, look at the bow keel "angle" - it's likely going to be the same for the two... which means the a 22' boat would have 3' less hull in the water than a 25' boat. Whereas, a 22' boat with a nearly vertical bow keel will actually have more boat in the water than a 25' boat with a sloping bow keel.

I believe that answers your first question.

As to the bracket, it WILL have an impact on hole shot and (slightly) on top end and keeping the bow planted in the chop. However, it will NOT impact how well a hull cuts through the chop, per se. That's entirely dictated by WLL and hull design.

seasick · Mar 18, 2024

DennisG01 said:
I'm not sure what "folks say" means, but go look at the model specific info on Grady's site for definitive info on length. "Sometimes" you'll even get lucky and see the waterline length listed (WLL or something similar). But, regardless, for comparison between the two boats vs their respective hull lengths, look at the bow keel "angle" - it's likely going to be the same for the two... which means the a 22' boat would have 3' less hull in the water than a 25' boat. Whereas, a 22' boat with a nearly vertical bow keel will actually have more boat in the water than a 25' boat with a sloping bow keel.

I believe that answers your first question.

As to the bracket, it WILL have an impact on hole shot and (slightly) on top end and keeping the bow planted in the chop. However, it will NOT impact how well a hull cuts through the chop, per se. That's entirely dictated by WLL and hull design.

Dennis, Is the 'bow keel angle' the same as what I would call the transom angle?

DennisG01 · Mar 18, 2024

seasick said:
Dennis, Is the 'bow keel angle' the same as what I would call the transom angle?

Only if your definition of the transom is the same as my definition of the bow

What I mean by bow keel angle is the "slope" from the nose of the boat towards the water. The more vertical that is = more boat "in the water". Which means it's possible for a smaller boat to actually have more boat "in the water" than a larger boat, depending on that angle.

Ekea · Mar 19, 2024

rake is the angle the bow makes relative to horizontal when viewed from the side.
deadrise is the angle of the V relative to horizontal when viewed from the front or back. the deadrise can be different at different points along the hull.
transom angle is not a commonly worried about item but is the angle the transom makes from vertical when viewed from the side (straight up would be 0 degrees)

Fishtales · Mar 19, 2024

Beam is the biggest factor in ride quality and on the drift all else being close.

seasick · Mar 19, 2024

DennisG01 said:
Only if your definition of the transom is the same as my definition of the bow

What I mean by bow keel angle is the "slope" from the nose of the boat towards the water. The more vertical that is = more boat "in the water". Which means it's possible for a smaller boat to actually have more boat "in the water" than a larger boat, depending on that angle.

I feel like a real idiot!
It all makes sense.......

DennisG01 · Mar 20, 2024

seasick said:
I feel like a real idiot!
It all makes sense.......

Truthfully, I was kinda wondering what was going on. I mean, I KNOW that you know the difference between bow and stern... but I was like "What are we missing here - Seasick knows this - why is he asking?"

seasick · Mar 20, 2024

Who knows, maybe the years are taking their toll. It's OK to ask me if my head is screwed on tightly. Sometimes it may not be.

Bdsp1234 · Mar 24, 2024

The best riding hulls have a 3.1 ratio. Length / beam.

Example is

25’ length divided by 8’ beam.
28’ length divided by 8.5’ beam.

seasick · Mar 25, 2024

Bdsp1234 said:
The best riding hulls have a 3.1 ratio. Length / beam.

Example is

25’ length divided by 8’ beam.
28’ length divided by 8.5’ beam.

What measurement do you use for that estimate

Actual bow to stern length, published length, or length over the water?
The type of hull makes a difference also. In this case, it works for V hulls. Pontoons for example are a different story as would be non planning hulls.

Just busting them a little

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255 vs 225 water length

fsmithjack

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seasick

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Ekea

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fsmithjack

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DennisG01

GreatGrady Captain

seasick

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DennisG01

GreatGrady Captain

Ekea

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Fishtales

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seasick

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DennisG01

GreatGrady Captain

seasick

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Bdsp1234

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seasick

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