I saw this "20 ft. Dory" which I believe is a 19 ft. Cape Dory sailboat that's been gutted. I don't think a Jet Ski engine would push it, but what about a well installed aft of the keel and drop a 35hp something in? This thing brings new meaning to the term Manual Labor, but I think it could be a boat someday.
Thoughts, ideas, or show me which direction in which to run?
A much smaller outboard will get it to hull speed easily. There is no good ROI in trying to make it go any more quickly. I echo the above. Run away.
Come on guys, this is GRM, I say GO FOR IT! Start a thread so we can all watch, critique and chuckle from the sidelines. BTW, depending on how fast you want/need to go, a jetski motor/pump will push it around and with the thru-hull bearing and seal on the hull, the inside would/should stay dry.
I vote in the affirmative to a boat build.
Mr_Asa
MegaDork
1/27/25 8:57 a.m.
One jetski will push it.
But this is GRM. Why not multiple jetskis?
In truth, I'd try and find a better hull first. This is marginally better than making your own mold and forming your own hull.
If one jetski jet drive is good then two would be better!
lotusseven7 (Forum Supporter) said:
Start a thread so we can all watch, critique and chuckle from the sidelines.
... and to all you guys that don't get your entertainment from Cable TV, you're welcome!
Could be. The ad says 20 ft. seller says 19 ft. Typhoon is 18.5 ft. but seeing it upside down on a trailer, the keel looks smaller. If it is that deep then it's off my list.
Thank you.
It depends. Do you hate your life? Do you want to be miserable? Do you think you might enjoy having particles of fiberglass embedded in your skin?
Are you looking for the disappointment of finding out that no matter how much power you pile on this thing, it doesn't get faster? That's how displacement hulls work.
It looks like it has part of a keel, so add a bunch of extra effort to replace that part of the bottom, or be prepared for the difficulty in trailering it, plus a whole bunch of extra drag to slow it down, and having it draw more depth. That gives you lots more opportunities to get it grounded.
if you do decide to proceed, you'll be stuck with it for life, or you'll end up cutting it up and sending it to a landfill. You'll never find someone to buy it. My suggestion is let the current owner deal with that.
Generally speaking, I don't know anything about boats, but they always seem like a sound investment to sink some money into. Like a race car. Or an airplane. I say go for it. What could go wrong?
I've seen many far better project boats than that one. Most are free, or nearly so.
Run away.
67LS1
Reader
1/27/25 10:15 a.m.
The hull speed on that hull is probably single digit. Maybe low double digits. Gobs of HP are not going to overcome that.
I love boats and boat projects but they have to make sense.
J/K. No they don't.
In reply to 914Driver :
Doom and unmitigated failure is emanate!
Start with a better example.
If I may...
Hydrofoil/paddlewheel hybrid. Dump a motorcycle drivetrain in, add a few bits to connect everything, and you're set!
How much are they paying you to haul that thing to the dump and will it be enough to buy the boat for the 35 horse engine you mentioned?
NOHOME
MegaDork
1/27/25 8:14 p.m.
Mr_Asa said:
One jetski will push it.
But this is GRM. Why not multiple jetskis?
In truth, I'd try and find a better hull first. This is marginally better than making your own mold and forming your own hull.
Outriggers with a jet-ski on each side.
mtn
MegaDork
1/27/25 9:18 p.m.
Obligatory don't do it.
I think you first need to figure out what it is... because it is not a Cape Dory. Here are details on Cape Dory models. This doesn't match any of them that I can see.
I'm fairly certain that they're calling it a Dory as in the style of boat.
NOHOME said:
Mr_Asa said:
One jetski will push it.
But this is GRM. Why not multiple jetskis?
In truth, I'd try and find a better hull first. This is marginally better than making your own mold and forming your own hull.
Outriggers with a jet-ski on each side.
It looks like Sea Doo already made one for you. Find a broken one of these and fix it. Much easier than buiding one from scratch.
This should be moved to the doomed projects thread. I would vote it as the winner.
mtn
MegaDork
1/28/25 11:25 a.m.
In reply to 67LS1 :
For some reason that one doesn't seem too daunting to me compared to most wood boat projects. I am sure that it should be and is as bad as any of them, but it doesn't scream disaster to me.
Good info here, things to watch for.
I look at that and simultaneously think that it looks like a fun project, and also... the core has to be a sponge by now. Almost zero chance that the wood core is intact.