re: Hydrasports making a 65' center console

So 3135hp?

Couldn't do it with diesels in that boat. Couldn't even get close. Not sure how much room you have under the floor but you'd have to stuff twin C32's under there to get past 3000hp, and they'd have to be tier 4 with aftertreatment and urea. Not even worth talking about.

You could MAYBE shoehorn a pair of C18's down there with a floor hump if you wanted to bad enough which would give you about 2200hp. Inboards just aren't practical at those numbers for that style boat.

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You'd gain range and longevity.

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only real reason to go that route

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I personally wouldn't want a half million dollars of gas sucking blow up prone outboards hanging off the back of my 2mil boat, but I'm incapable of thinking like someone with that kind of money. Replacement outboards and $7500 of fuel per trip is peanuts for those guys/corporations.

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Those engines suck, I'd imagine 5 yamaha 350's could push it at a decent clip though.

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Pelagic fishing with outboards sucks compared to inboards.

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You'll love the 55 Chittum concept



Also at some point Xcelerator was toying around with the idea for Greg Biffles boat they built. The concept drawings were ugly as sin.

Yea, frick that.

Diesels are HUGE and expensive and the power density is shite compared to suped outboards, but they last forever and they're not stacked across the transom where you're wanting to fish from. If you've got the room for them they're what you want.

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ETA: why not some suped up gassers then? I mean you obviously don't care about burn numbers with 3000 HP off the back?

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longevity, reliability and ease to swap out. they are on go fast boats, not fishers

Diesels is what I do. You could fit 1100hp under the floor of a 40' CC but it'd be tight.

It'd cost more than outboards and lose speed. Most guys aren't going to pay more for less speed in a market where dicks are measured in MPH.

EPA regs are stiff but under 800ish hp diesels don't have to use aftertreatment to meet the final rules applied to them.

Idk why inboard gas motors aren't more prevalent. You could easily fit a very suped up V8 under the floor of a big CC. you could put a 750hp V8 gas motors with a Hamilton jet behind it and have a pretty high performance rig. I'm not sure how the jets would frick up your fishing though.

They definitely have some unique design challenges that don't apply to outboards.

They're definitely more efficient and durable. 10k hours is getting all the way broken in for a marine diesel and marine gear. Diesel is safer to store than gasoline. You don't have to fish over/around outboards with diesels. There's plenty of advantages to diesel.

It just depends what you want and most guys buying 40+ foot center consoles don't want diesels or they'd have one. Like I said earlier, dicks are measured in knots in that market and diesels are not the best way to get knots.

You could start doing stuff with turned up clatterpillars and jet drives and get some big speed numbers, but it t comes at a high price.

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I'd imagine they'd have to completely redesign the hull to support large twin diesels instead of outboards hanging off of the transom

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Intrepid does it, but I dont think there are many hulls with it






Looks like all rear storage/wells are lost though

I'm no naval architect but I'd imagine there's a lot more that goes into designing a boat for an inboard diesel compared to outboards, and I wouldn't imagine the brightest minds in naval architecture are designing HS's hulls.

Inboards get the weight down and forward which is always good.

Designing a hull for diesel inboards requires substantially more planning. There's a minimum of 3 hull penetrations at or below the waterline (SW intake, propshaft, exhaust), much more piping, more electrical, stiffer beds, etc. Outboards need a transom and fuel.

You loose your rear below-deck storage, if you have to swing an engine or gear you're cutting the boat, you have to get in the bilge for maintenance, if you get any kind of leak it's coming in the stateroom, the list goes on.

BUTTTT, you have diesels. You gain massive longevity and better range. They're better for a work boat or a fishing boat that needs the longevity diesels offer. It's also much safer. Diesel is less volatile than gas, the engines are less likely to come apart, they're internal to the boat and better protected, the driveline is much more heavy duty and can handle far more abuse from stuff like sucking up an old ship bow rope while hauling arse.