Another Marissa ECO 18 build

[54bullwinkle]

Starting a Marissa 18 build.

Awaiting plans and sourcing materials 

Before I start, thanks to those who have posted their builds.    Will be very helpful 

 

Will be a long process.  My guess a year.    will post along the way

[dwg2116]

If money is not an object,   the precut kit will move that timeline along smartly.  Plus you get known good marine okume.

 

the only real benefit to sourcing materials and cutting it all your self is personal satisfaction.

 

Best of luck with your project. It's a beautiful choice.

[54bullwinkle]

Absolutely, but planning to make some slight adjustments so the pre cut panels won’t work 

[54bullwinkle]

Marissa ride questions 

 

My plan is for a 60 Zuke , same weight as Graham’s 40

Some builders say boat would benefit from trim tabs.   Prefer not to have to do that.   I had a similar skiff, an outboard foil solved the issue, faster planing and kept the bow down.  Lotus recommends moving the console fwd.   I may a bit, also will put batteries in the fwd part of the console if needed

 

Im going to stretch the stern one foot and add 4 inches of beam ( 2 inches on each chine flat at the beam to keep,the overall proportions of the boatl.  The length should help.   Concerned that chine slap may be an issue with the larger chine.   

 

Everything still just paper and pencil.  Considering options before I start my cuts

 

Thoughts?

[Alan Stewart]

I would definitely want trim tabs. The doel fin on the outboard I thought was more of a band aid fix for boats that ended up with too big a motor on the stern and wouldn't plane out at lower speeds without it. I don't think the Marissa would need one even without trim tabs and they add drag/reduce fuel economy. The purpose of trim tabs is to adjust the ride angle to maximize performance at a given rpm and to adjust how the boat behaves in a chop like being able to put the bot down into a short chop to smooth out the ride. Also in a crosswind to level the boat out. 

 

The hull is already nice and light so adding a foot of length and 4" of beam at the chine will make her float even higher. I'd probably just leave the chine beam alone if you want to widen the boat just do it at the sheer and gain a bit of cockpit width, i don't think the boat needs more beam really. Wide chine flats have been tried and I don't think there is much benefit plus the slapping is def probable. All the custom 25, 30 and even 52 footers have about 2 1/2" wide chine flats with sharp edges for spray. 

[54bullwinkle]

Thanks Alan

I’ll leave the chine flats.  Chine slap makes for very uncomfortable ride

I’m wondering whether adding just 4 inches in length is worth all the extra work.   The boat is so well proportioned.   The 4 inches is to maintain the overall proportions of the boat, but I def want an extra foot in length, giving me space behind the leaning post for fishing 

 

do you think adding a foot, without adding any beam would look ok?   Would make my build a lot simpler 

 

Thank you….Moose

[54bullwinkle]

Correction above 

“ wonder just adding 4 inches in BEAM is worth all the extra work “

 

Leaning to just adding the length