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-   General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)
-   -   The pros of having steps in the hull (https://www.offshoreonly.com/forums/general-boating-discussion/356531-pros-having-steps-hull.html)

RaggedEdge 09-11-2018 05:28 PM

Quote:

Originally Posted by Sydwayz (Post 4648359)
Boats with multi-step hulls are much more likely to send you swimming than a straight bottom or single step boat...
...so you got that going for you on a hot day; which is nice.

Attachment 575991

Near 66 yo as I write this, only been for a swim once, not a step bottom boat, just a straight V, pad bottom Hydrostream with a big azz Merc. Fault to the straight V? Fault to the pad bottom? Fault to the too big big azz Merc? None of the above, Fault to the dumb azz behind the wheel running way too fast into the wind. I have hundreds of hours in a twin step boat, have hundreds of hours in a single step boat, have at least one thousand plus hours in non step vees. The only one that I have ever taken a dump in was 100% my own dumb azz fault. Years of old wives tales about these step bottom boats, people just learn to run what you got, simple as that, you need little more than some common sense, little attention to wtf you be doing and the understanding that you are not superman. Step bottom boats go back decades, have their advantages, and are just as safe as any other design, when used as they are designed to be used.

LostinBoston 09-11-2018 06:45 PM

Quote:

Originally Posted by Jupiter Sunsation (Post 4648400)
How many straight bottom vee's have sent folks swimming........I can't think of any that weren't mechanical/fiberglass failure first.

plenty have stuffed
stepped hulls create multiple contact points and stagnation lines, which increases longitudinal and lateral stability, and lift coefficient. This allows for a better balance and effective trim, which reduces the risk of launching bow high, tripping the transom and stuffing.

hogie roll 09-12-2018 11:01 AM

Sounds like contenders might be spinners

https://www.thehulltruth.com/boating...contender.html

Sydwayz 09-12-2018 11:36 AM

1 Attachment(s)
Quote:

Originally Posted by hogie roll (Post 4648813)
Sounds like contenders might be spinners

Attachment 575993

I moderately skimmed through that. No one has reported on exactly what happened. But it's speculated that the boat was being run at speed with the SeaKeeper turned on. I can't possibly see how the driver, the sea, and the SeaKeeper could all agree on what to do with the hull at the same time.

hogie roll 09-12-2018 08:50 PM

Quote:

Originally Posted by Sydwayz (Post 4648816)
I moderately skimmed through that. No one has reported on exactly what happened. But it's speculated that the boat was being run at speed with the SeaKeeper turned on. I can't possibly see how the driver, the sea, and the SeaKeeper could all agree on what to do with the hull at the same time.

skim more, the conclusion was he blasted the cut at 70+ and got tossed in a spin

noli 09-22-2018 06:20 AM

.




nice steps on the DW360

for more pics ==> https://www.performanceboatcenter.co...=xNewInventory



https://farm2.staticflickr.com/1877/...3b77ecdd_k.jpg





.

articfriends 09-22-2018 09:12 AM

Heres a question on stepped hulls, i understand all the theory, etc and how its supposed to help. I own a 33 scarab AVS, runs 85 w 500efis, the mpi 502 versions run 76 to 78ish. The boats titled as a 31, if you look at a slightly older 31 or 33 scarab they look identical except the bottom with its agressive steps. So, if it only makes them faster in smooth water, how come the non stepped versions are 6 to 10 mph slower in rough water and smooth water? How come.my boat still runs 84 or 85 in rougher water, how come the non stepped ones DONT go 6 to 10mph FASTER in rougher water. Serious question, thanks, Smitty

madbouyz 09-22-2018 11:06 AM

^^ Once upon a time in the early days of the development of the deep V hull it was claimed that they were faster than other hulls in rough water because they were designed to run fast in those conditions without smashing the boat and its occupants to pieces .
Now ignoring that for a minute , if you have 2 nearly identical V bottomed boats in terms of size and power but one is a slower straight V and the other is a faster (by virtue of its bottom) stepped hull then as far as I see it the slower boat will always be slower . It's not suddenly going to pick up 6-10 mph simply because it's rough . Wouldn't the step bottom also pick up the same 6-10mph ? Am I missing something here , or maybe over simplifying ?

hogie roll 09-22-2018 01:20 PM

Quote:

Originally Posted by articfriends (Post 4650545)
Heres a question on stepped hulls, i understand all the theory, etc and how its supposed to help. I own a 33 scarab AVS, runs 85 w 500efis, the mpi 502 versions run 76 to 78ish. The boats titled as a 31, if you look at a slightly older 31 or 33 scarab they look identical except the bottom with its agressive steps. So, if it only makes them faster in smooth water, how come the non stepped versions are 6 to 10 mph slower in rough water and smooth water? How come.my boat still runs 84 or 85 in rougher water, how come the non stepped ones DONT go 6 to 10mph FASTER in rougher water. Serious question, thanks, Smitty

no one would prop a boat to have too much pitch in smooth water. I suspect race Apaches from back in the day may have swung more prop in rough water than they could turn in smooth, but most people aren’t going to prop their boat that way intentionally.

hogie roll 09-22-2018 01:23 PM

Quote:

Originally Posted by madbouyz (Post 4650563)
^^ Once upon a time in the early days of the development of the deep V hull it was claimed that they were faster than other hulls in rough water because they were designed to run fast in those conditions without smashing the boat and its occupants to pieces .
Now ignoring that for a minute , if you have 2 nearly identical V bottomed boats in terms of size and power but one is a slower straight V and the other is a faster (by virtue of its bottom) stepped hull then as far as I see it the slower boat will always be slower . It's not suddenly going to pick up 6-10 mph simply because it's rough . Wouldn't the step bottom also pick up the same 6-10mph ? Am I missing something here , or maybe over simplifying ?

Theoretically the step boat won’t pick up as much.

One other major variable in the comparison is that once you’ve really got air on the hull, your prop may be out of the water. Meaning you aren’t putting all of your power into to the water to achieve max speed.


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