Tippy aluminum houseboat

Roarr

Recruit
Joined
Sep 6, 2021
Messages
2
I just finished a rebuild on this boat and have made it very tippy left to right to the pointim worried about it capsizing like full rollover. There were gas tanks inside under the front seats that smelled of gas so I removed them and put a new larger tank up top under the upper helm. Yeah yeah I know this was a consideration of balance and we always had to much weight in the side with the outboard stove fridge etc all along one side but the fuel tank up top was bad but no where else to put it. So my question is what about adding some pontoons. This would give me more floatation and eliminate the left right sway even at rest. I see some boats by IRC that have pontoons and a hull and it looks like a very strong design any ideas would help and I uabw looked into gyros always need power and fins are great when your moving but houseboats just sit.....20210903_085558.jpgi20210725_111536.jpg
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,777
You need to relocate the fuel tank low in the boat, below the water line

Many times to level houseboats, you add lead weight
 

Roarr

Recruit
Joined
Sep 6, 2021
Messages
2
You need to relocate the fuel tank low in the boat, below the water line

Many times to level houseboats, you add lead weight
There is no place below water line its a very shallow boat! It had tanks in rear of boat but they added inboard and was too heavy back there thats why they put them inside the seats. I think my only option now is to add pontoons.
 

briangcc

Commander
Joined
Jul 10, 2012
Messages
2,381
You're trying to defy physics. By placing the tank up so high, the center of gravity was put way, way out of whack. You really do need to move the tank down.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,777
There is no place below water line its a very shallow boat! It had tanks in rear of boat but they added inboard and was too heavy back there thats why they put them inside the seats. I think my only option now is to add pontoons.
you need a very low profile fuel tank
 

kcassells

Fleet Admiral
Joined
Oct 16, 2012
Messages
8,732
Just use 1 pontoon.
Scott hit on the head with his original answer.
 

Earl Cordova

Petty Officer 2nd Class
Joined
Apr 21, 2021
Messages
146
Lowering the gas tank will help when the tank is full.
But it looks like you will need some permanent ballast.
 

sphelps

Supreme Mariner
Joined
Nov 16, 2011
Messages
11,468
Lead weights or a bunch of the dumbell disk down in the bilge like a sailboat .. Less weight up top .. Adding pontoons may help but might make it a problem being too wide for a slip maybe ?idk
 

Jim Hawkins

Chief Petty Officer
Joined
Mar 11, 2013
Messages
500
I suppose you can add pontoons on each side and they will help with the roll but I don't see how to do it feasibly. That looks like an old Sea Camper, cool. I would remove all the topside railings and replace with stanchions and SS cable, remove that big platform roof on the back and find a way to put the fuel tank on the back deck, maybe where the propane tank is. How much fuel you carry anyway?
 

froggy1150

Master Chief Petty Officer
Joined
Nov 3, 2017
Messages
846
What about "pontoon looking" fuel tanks wouldnt have to be very big either.
 

Lectro88

Petty Officer 1st Class
Joined
Oct 24, 2020
Messages
303
Not to beat a dead horse.
But the fuel tank up top, is like..,
Trying to relocate an extension ladder in the upright position with a 100 pounds up top, or a man standing on the top rung hanging on.
And I don't mean to sound ugly.
 

444

Senior Chief Petty Officer
Joined
Jul 16, 2010
Messages
704
Great looking boat! I think you need to ask yourself why this boat isn't behaving now when originally when it was new it would have been just fine.
 

PC on the Bayou

Petty Officer 1st Class
Joined
Apr 27, 2020
Messages
234
Not only does the fuel tank being so high through off the COG, but it could also cause a significant siphoning problem from the tank that could be dangerous.

I agree with moving the tank down to the lower deck or below it. The adding of ballast could be good, also, if more is needed.
 

Lectro88

Petty Officer 1st Class
Joined
Oct 24, 2020
Messages
303
Not only does the fuel tank being so high through off the COG, but it could also cause a significant siphoning problem from the tank that could be dangerous.

I agree with moving the tank down to the lower deck or below it. The adding of ballast could be good, also, if more is needed.
The siphoning is a very good point that I didn't even consider.... It sure would make it easier on the fuel pump.. LOL. But if a float sticks or doesn't cut off, yeah that Could be bad.

And filling at station has got to be a pain, short hose and having to climb with the hose or have someone reach it to you.
It sux being out of good options and needing space.
 

briangcc

Commander
Joined
Jul 10, 2012
Messages
2,381
It's been over 3 weeks boys and girls. I doubt the OP will be back after we didn't give him/her the magic bullet of how to fix the self made problem.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,979
Best to have this thing inspected before an accident happens.-------I like boats designed by a Russian archetect-------Name is ----Kneva Toppleova
 

Jim Hawkins

Chief Petty Officer
Joined
Mar 11, 2013
Messages
500
Just noticed this, check out the rudder type attachment on the cavitation plate of the big motor behind the Yamaha 25
1633894875000.png
 
Top