What ever happened to trihulls?

reelfishin

Captain
Joined
Mar 19, 2007
Messages
3,050
I can't help but notice that there are fewer and fewer trihull boats out there. I also don't recall seeing any late model trihulls either.
What ever happened to this style hull? What there some strange defect that made everyone stop making them?
I personally really like them for river fishing, they are super stable and most are pretty light. I would gladly sacrifice ride quality for stability, but I never really thought that any of mine really rode all the bad, you do feel more than in a V hull, but I like the way a tri stays ontop of the water.
 

Mischief Managed

Lieutenant Commander
Joined
Dec 6, 2005
Messages
1,928
Re: What ever happened to trihulls?

Maybe they evolved. My boat has sharp, reverse chines which are a part of the tri-hull shape. Also, quite a few deckboats sport a semi-tri hull design.
 

studlymandingo

Commander
Joined
Mar 22, 2006
Messages
2,716
Re: What ever happened to trihulls?

Actually there are a number of manufacturers that still produce Cathedral or Tri-hull boats. Ones that I see mostly are smaller lake fishing boats but there are manufacturers such as Pelican and Scorpio that produce them on a regular basis.

I have owned a cathedral hull boat myself, a 16' Glastron. It was a great boat on smooth lake water, but get it out into the bay and it would rattle your fillings.​
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: What ever happened to trihulls?

Didn't we just beat this to death a couple of weeks ago.
 

ParallaxBill

Petty Officer 1st Class
Joined
Aug 27, 2006
Messages
341
Re: What ever happened to trihulls?

"Didn't we just beat this to death a couple of weeks ago."

Probably did, but at the last Boat & Motor Show in Charlotte, NC most of what I saw for sale was some type of tri-hull design. They look less pronounced than the one on my old Glassmaster but people seem to like the stability a tri-hull offers for moderate weather boating.

100_0634.jpg
 

NGABaldEagle

Seaman
Joined
May 21, 2006
Messages
63
Re: What ever happened to trihulls?

I thought they went to the performance hull like on my Venture bass boat.

I have attached a pic.

Everything I have gained from this site tells me that they will all porpoise at some point.
I learned also that the performance hull which looks similar to a tri-hull is designed to allow the boat to ride almost level near full speed.

I did so in my boat rated at 450 lbs or 3 people with me (265) my brother (225) his wife (105) my tackle box (65) his tackle box (5) several rods (?), a portable fuel tank with 5 gallons mixed fuel, permanent tank with 10 gallons gas.

She was slower to plane but not by much and still leveled out beautifully with the 3 of us in the seats.

Perhaps one of you fellers can tell me more about this hull design than I know which by the way isnt much other than I know it works well.

I only did this to check performance and ability within reason.
I recognize this boat is a 2 man fishing machine or a 3 person joy rider.

This boat is a 1987 Venture K-155 Bass Boat.
Look forward to gaining more knowledge about this hull design.
The tri-hulls were the norm in the 70's for runabouts.
Cathedral for crusiers I think.
See the pic attached.
 

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Texasmark

Supreme Mariner
Joined
Dec 20, 2005
Messages
14,782
Re: What ever happened to trihulls?

Yeah Tas I participated in that but forgot what they called the boat that had the right idea (in my opinion)....deepV plus sponsons. Call it Trihedral. Now that is a hull design.

Mark
 

reelfishin

Captain
Joined
Mar 19, 2007
Messages
3,050
Re: What ever happened to trihulls?

I won't argue that they are a harsh ride, but for rivers and lakes, and even a few trips into the bay, they are a huge step up from a flat bottom boat, with lots of fishing stability.
I've seen the newer hulls that have a more pronounced center V hull, and even my '77 Starcraft has a more pronounced center V than does my older Duo.
I don't agree that they tend to be heavy, my '77 17' Starcraft bow rider is listed at only 1450 lbs dry, that's over 400 pounds less than my 18' V hull Renken, which is also an open boat with no cabin, but has a closed bow. the difference can really be felt when towing them. The V hull is faster and better on fuel which I attribute to the added drag of the outer hulls on the trihull.
The best part is that the trihulls tend to be cheap to buy even in nice shape. I have two of them now, both are in really nice shape as found. The Duo was under $400 and was turn key minus a battery.

They seem to be pretty tough as well, I don't recall ever seeing any major hull failures from pounding the waves with them. I had an old Evinrude with a stern drive that I ran pretty hard when I was younger and never hurt that boat. The worst I ever did to that was shatter a few aluminum pedestals hopping wakes and getting out through the breakers in the ocean with it. That one did sit a lot higher in the water than do either of these I have now, but the outboard Starcraft sits the highest in the bow with at least 30' above the water line. The Duo sits pretty low all around, but the hull isn't nearly as deep overall. I wouldn't even think about rough water in that boat.

In my eyes, the trihulls are for my river fishing, I have an aluminum boat for lakes and freshwater, and I use my V hull in the bay and once in a while in the ocean. Until I found these two trihulls, I was running my aluminum boat out into the bay, and that could get a little scary if the weather turned bad.
The trihull makes it a lot nicer when there are three people fishing too, in the aluminum boat, three was too crowded. At least in the trihull, it's stable enough that you don't have to worry about capsizing if everyone is on one side of the boat. I also like the bowrider set up when it comes to fishing, the Duo has a forward loading step that allows me to pull up to the dock foward and let the passengers off at the end of the day, it saves time since I don't have to wait for side access to a crowded dock. I can pull right up to an end slip, unload, have a buddy go get the truck and trailer while I wait back a ways not blocking up the dock, once he pulls in the water I drive on up, load and leave. It works like a charm. If I had to wait for room to get up farther on the dock to let the other guys off the boat, I'd could be there for an hour or more, especially if there's a few newbies loading.
I usually have a buddy back the trailer down the far side of the ramp, away from the dock, that way I am away from the crazyness that goes on along the dock side of the ramp. I have loading down to about 5 minutes on average. If there are three of us, one guy drives the truck in, the other snaps on the bow hook and give the winch a few tightening cranks, and I ride the boat out of the water. I secure the seats and any loose items, hand over the coolers and tackle boxes to a buddy in the bed of the truck and hop over the bow and secure the rear tie downs and off we go. With the shape of the trihull, it sits right down nice on the bunks, always self centers, and getting down from a boat on the trailer is easy with that front step, I can step over the bow, down onto the winch plate and onto the step bumper of the truck with ease, with the close bow V hull, climbing down once on the trailer is a bit tricky since there's no bow access.
I also seem to have better directional control with the trihull when docking or loading with a cross current than I do with the V hull, I sort of figured that it has something to do with the two outer hulls? It's just not as affected by the current as much. The V hull can be a real chore loading with the current running hard, it seems to push the bow around too easily.
 

jmoorepghpa

Petty Officer 2nd Class
Joined
Apr 17, 2006
Messages
114
Re: What ever happened to trihulls?

I must have missed beating of the tri-hull issue but let me re-beat it for a sec. If your boat use basically involves throwing the wife and kids in along with whatever water device they want to be pulled around on this weekend then the tri hull is the ticket. The stability is almost mandatory with kids getting in and out and constantly moving around when you are not under way. Granted they are best in lakes and rivers. You rarely hear "For the love of Pete will you all sit still!!!!" coming from our boat. They are nicer too at the dock when you are loading and unloading the young-uns.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,337
Re: What ever happened to trihulls?

I would say that advances in variable deadrise mod-Vee designs and the popularity of the cat put the tri-hull to rest.

Trying to compare the ride of a tri-hull to a cat is like comparing the ride of a bucking bronco to a Thoroughbred
 
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