Difference in draft with flat bottom vs shallow Vee?

[MrSimon]

I like fishing the saltwater bays along the mid Texas coast. The Vee is better for crossing the open bays and the flat bottom is better for the mud flats and marshes. The Vee is safer and more comfortable while on the open water and the flat bottom allows better access in the shallows once you get there.

The Allweld boats you linked in your first post are actually mod-v jon boats, not shallow V-hulls. I believe that all of the responses have been comparing mod-v and flat front jon boats .... nobody has weighed in yet on an actual shallow v-hull boat.

I'd say a light weight shallow-V can run pretty darn shallow if there is enough weight in the front to balance things out. If you look at the bottom of a lot of shallow-Vs, they are perfectly flat, but the bow (which is above the water line) is in a wedge shape. Although, these boats tend to be narrower that jons and therefore will ride a bit lower in the water.

 

[Jeffrey]

Hmmm. That's kind of sneaky calling their mod Vee bottoms just Vee bottoms when a mod Vee doesn't really have a Vee bottom. A mod Vee is just a flat bottom with a pointy bow.

 

[cva34]

Hmmm. That's kind of sneaky calling their mod Vee bottoms just Vee bottoms when a mod Vee doesn't really have a Vee bottom. A mod Vee is just a flat bottom with a pointy bow.

Jeff Let me try to explain.The way I see it I have a 16 f Superior boat with pontoons..Across the bottem at transom its almost flat/ slight V..The tunnel is 15i wide x 8i tall and runs forward about 6f so that takes most of the V out in stern.then from where tunnel starts and forward there incresingly more V as it sweeps toward bow..Its got a 50 Merc 2s..Most of the Prop stays in Tunnel and skag below that.it will idol along in about 8i less than most SV and F bottems..An when your at WOT it will run in less than FOOT...If your anywhere near your welcome to come look...cva34

 

[thudpucker]

I'm of the opinion that a Jon is a flat bottom boat with a Blunt uplifted bow.
For fishing in leisurely water where you can stand up etc. :lol:

The Pointy bows are specifically to help the planing, and cut through waves etc.
Down here in the shallows, I got out of the boat and walked around fishing. :mrgreen:

 

[Jeffrey]

I like fishing the saltwater bays along the mid Texas coast. The Vee is better for crossing the open bays and the flat bottom is better for the mud flats and marshes. The Vee is safer and more comfortable while on the open water and the flat bottom allows better access in the shallows once you get there.

The Allweld boats you linked in your first post are actually mod-v jon boats, not shallow V-hulls. I believe that all of the responses have been comparing mod-v and flat front jon boats .... nobody has weighed in yet on an actual shallow v-hull boat.

I'd say a light weight shallow-V can run pretty darn shallow if there is enough weight in the front to balance things out. If you look at the bottom of a lot of shallow-Vs, they are perfectly flat, but the bow (which is above the water line) is in a wedge shape. Although, these boats tend to be narrower that jons and therefore will ride a bit lower in the water.

I was looking again at the Vee Bottom boats at the Alweld web site. I think the only MV boat is the 44" wide one. It looks like the rest of them are really Vee Bottoms.

 

[MrSimon]

The descriptions and names can be confusing for sure.

Everything Alweld makes is considered a Jon boat. They make flat bottom jon boats and what they are calling V bottom jon boats. Most people call their V bottom jon boats mod-v jon boats, but they are basically the same thing. Its hard to tell, but it does look like Alweld might put more of a V into some of their boats than other manufacturers, but its still a jon boat.

A shallow-V boat is not a jon boat. It is a type of V-hull. It looks like this:

A deep-v boat looks like this:

This is a mod-v jon boat:

This is a flat front jon boat:

 

[Country Dave]

I realize that flat bottom boats will draft less, while shallow Vee bottoms will ride better in rough water. I am not interested in a deep Vee bottom boat.

But, how much difference are we talking about? If you had a 1652 flat bottom or shallow Vee like these Alwelds, how much difference in draft are we really talking about?

Then if you added flotation pods to the shallow Vee, how much would that affect the draft and the quality of the ride?

Flat Bottom Boats:
https://www.alweld.com/flat_bottom_econo_jons.html

Bee Bottom Boats:
https://www.alweld.com/vee_bottom_econo_jons.html

If the flat bottom boat and the Mod V boat are the same length and width the draft is going to change only in proportion to the deadrise.

They are both going to displace just about the same amount of water. Remember an object placed in water is going to be buoyed upwards by a fore equal to the weight of water it displaces. In other words if your hull displaces 30 gallons of water your boat would be forced upwards by the weight of the 30 gallons of water it displaced. Water weighs about 8.3 pounds, so the upwards force would be 8.3 X30= 249lbs.

So it really comes down to how deep the V/deadrise is. If the bottom center of the hull extends down 2 inches further than the flat bottom hull it will draft 2 inches more than the flat bottom. If you can deal with that the benefits of a Mod V far outweigh the little increase in draft. As far as the float pods, well that’s more about supporting the weight of a heavy stern. It’s going to help a little bit with floatation but again only by displacement.
I don’t believe the pods adversely affect the ride and control of the boat, in fact I would say they improve it.

 

[cva34]

Jeffrey You asked on PM and I forgot ...My Superior is 16f then has 15i long pontoons...and its 60i wide on outside bottem and 82i beam...Sides are 24i..cva34