Let's talk hulls - Striper Talk Striped Bass Fishing, Surfcasting, Boating

Krispy · 08-07-2006, 01:12 PM

converting the 650lb i/o thats sinking the scuppers 1.5 inches below the waterline to an o/b. Raising the floor 2" , repositiong the fuel tank forward and converting the cuddy (Seafari model) to a CC by cutting the top off and remolding the cap edges w/ supports. Will also need a few rib supports added into the hull as well.

JohnR · 08-07-2006, 01:29 PM

Quote:

Originally Posted by Krispy

converting the 650lb i/o thats sinking the scuppers 1.5 inches below the waterline to an o/b. Raising the floor 2" , repositiong the fuel tank forward and converting the cuddy (Seafari model) to a CC by cutting the top off and remolding the cap edges w/ supports. Will also need a few rib supports added into the hull as well.

Hey ND - take a look on CSC in Trayder's (he owns CSC) pics to get an idea on when he rebuilt his 20 from near scratch. In fact, when you are up in the NPT area I can probably arrange a quick Q&A with him plus seeing the boat if you are interested.... Good luck with that project...

JohnR · 08-07-2006, 01:59 PM

I'm not a nautical engineer like some here

but some of the advantages of the Seacraft hull is that because the longitudal steps decrease in deadrise from the center of the hull and out, you get a cushioning effect as the hull goes in the water with each outboard step flatter than the inside. So the advange is that you have a deep V center step but a more tame outermost step to mitigate some of the roll of a DeepV. The disadvantage is it still takes a lot of HP to get this hull (like most other deep Vs) up on plane and to remain on plane.

There are more than a few 20' boats with 90hp outboards that do OK but you'd need at least 115 on the 20 SC. The odd 23 footers have 175s but a 23SC is going to want 225 or more...

Krispy · 08-07-2006, 02:02 PM

Thanks John, I would really appreciate that. CSC is an incredible resource for anyone redoing any boat. Ive looked over Trayders pics a million times

as well as all of the other 20 projects, and have a good idea of the direction Im gonna go for each step.

capesams · 08-07-2006, 03:17 PM

Krispy....just a note of caution...be carefull of moving the tank to far forward...that and leaving the cabin on can put to much weight forward making it bow heavy..rain water or any other water may run forward and not drain out the scupper's without adding lots of weight in the stern......this happened to a man I know who did the very same thing your thinking of doing, but he did it to a 23.

Krispy · 08-07-2006, 03:30 PM

Thanks for heads up CS. I will be removing the forward cuddy section. Originally the tank sat directly ahead (6") of the i/o, adding alot of weight to the stern of the boat. The new tank position will be more amidships, but still a good 2-2.5ft forward of the old location.
Will the 38gal be sufficient for a 130-150hp o/b? Its in excellent condition, so Id like to reuse it if it makes sense.

Mr. Sandman · 08-07-2006, 03:45 PM

You might consider doing a few hydrostatic calculations to determine what the static trim will be for various tank/engine sizes and loctaions.

Pete_G · 08-07-2006, 04:16 PM

I've spent a lot of time in the 18 Parker. It pounds in chop. Not much deadrise and it just does NOT like the chop kicked up by an afternoon sea breeze off RI.

Safe boat and we always get where we're going, often we get wet though. Incredily fuel effecient and fast (on flat water) with the 115 Yamaha, but how often is it flat off RI?

Deep V or at least semi all the way, unless you like being sent running for cover every time the sea breeze kicks up.

Rip Runner · 08-07-2006, 04:25 PM

You have to ride in a 23 Seacraft to appreciate it. I completely restored this boat with my father and now do custom charters out of it for smaller groups or specialty fishing we might not do on the Blackfin.

The straight inboards ride even better than the outboards, but they are not as fast. I took the wing curtains off this year because I never need them.

capesams · 08-07-2006, 04:26 PM

U should get some good mileage out of that tank....I had a 30gal in my old 20' ox with a 150 yam on it...all day on the water an no worries getting home..corse I'm not known to be a speed demon either so milage may differ with who's behind the wheel...A friend has a 1973 20' cc sc. with a 150...with him it's dead stop or all out...reguardless of sea conditions....one

sob to ride with..but we/re still both here.