Hatteras 58' Tri Cabin

Can you share any details? Engines? Weight of dink on board? Boat lay out? Boat age?
Or even the ad?

You need to confirm the height of that arch.
A couple of low fixed bridges around 19 feet in Chicago you have to clear for the loop.

IMO, Cut that price in half also.

With those ole Cummins 8.3s, you can suck down some fuel trying to make speed. Going real slow, they may do darn good. Better than the original Detroit engines.
The 8.3s are great engines @ 450hp.
The 5.9s were short lived @ 450hp.

Quoting a friend on another thread; Hull speed is commonly calculated as the Sq root of LWL x 1.34. Just under this speed you may find up to 1 MPG, not including the gen-set consuming between 0.5 to 0.75 GPH.
The hull bottom would be called a modified V.
Very low deadrise toward the stern < 10 degrees.

Black and maybe grey water collection will be an issue also on the loop.

https://en.wikipedia.org/wiki/Hull_speed

First at all for some reasons the name of the broker rings a bell. Actually a red flag. And I am not taking about the pathetic pictures ... geee. They couldn’t even make the beds before taking pictures????

The 450hp C series are the only thing that seem good about this boat, assuming installed properly and the shafts and running gear was done as well. The boat should do 1 NMPG at hull speed (9.2kts).

the layout of the 58TC was made obsolete once Hatteras launched the flush deck 53/58. This one seems even worst because of the home made aft enclosure

Just the way the electronics are installed, the mess in every picture raise a bunch of questions about the boat condition. This seems to be a project boat... capt Ralph could be wrong and half the price maybe way too much.

the arch will need to be hinged for the loop by I doubt this thing will make it up there anyway

black water shouldn’t be a problem, these boats had holding tanks from the factory. Grey water isn’t an issue on the loop unless you go up lake Champlain

Those were mechanical Cummins. Not QSCs.

Same as what I repowered my 53 with

I may be remembering wrong, You put the 8.3s in or 5.9/6.0s?
I'm not an Cummins expert but I thought the smaller (5.9 to 7L) and later 6 lung engines were were QSBs and the larger (8.3) was QSC and the big one (11) was QSM.
The mechanical engines were called M5.9-** (**=hp).
I am a big 8.3 fan, mechanical and fuel injected, and these would be a real super engine in your ship, I again,, may have just remembered everything wrong.
This getting old stuff,, sux..

C series aka 6CTA are 8.3 B series / 6BTA are 5.7 and only make 250 to 300 hp.

When the y went electronic they were renamed QSC

the 58s are about 52/53’ at the waterline so hull speed is around 9.3 to 9.4 kts

What do you want to know from the owners manual? Honestly it s going to be pretty useless since it is clear that this boat has been extensively modified.

If the engines were installed and propped correctly, best economical speed will be 9 to 9.2 kts. Not the 11kts (12mph) advertised which would be the worst possible speed.

again assuming all is right and the trim tabs work, the boat should be able to get on plane and cruise at 16/17kts burning 35/40 GPH.

if you look up Hatteras Owners forum brochures you will find a collection of brochures of pretty much all Hatteras models with some specs incl the 58TC

but again original specs are irrelevant considering the modifications and repower.