CT249 your observations are fine, but ultimately irrelevant. Scows aren't the apex of sailboat design and they aren't even mainstream, otherwise...
You can get electric motors with the required power at the specified range, and if you search even ones that would not need a gearbox. You need to...
He needs 600kWh usable energy, the total battery capacity depends on the used cell and the settings you are comfortable with. Most manufacturers...
Ok, 18t as a typical load, how do you plan to mange loading/unloading and on site storage? You should talk with your chosen NA about draft and...
I have to ask, what's the reason behind the 20t limit? Why not 30t so you can embark a fully loaded 20ft container and a self powered dolly?
In my opinion you don't need a second battery bank. Of course you may still want one, so I'll adress it. The real question is if you need a...
I suppose you never encountered telescoping keels. Telescopic Lifting Keels - APM Keels...
We need more info. 1. Is the engine always running during while offshore or not? 2. What is the time spent on batteries alone (anchored, or other...
Daycharter boats is the niche you are looking for, not cruisers, and there are plenty of them, but few in plywood. One example here, 15m, ply on...
It doesn't work that way with gases, the R value sinks constantly with increasing thickness, and stabilizes from one inch upwards. If you want to...
There are not that may options to choose from that you don't know about. The "neoprene rubber" stuff is probably ArmaFlex, a product of Armacell:...
That won't work. Those transversal waves in the laminate visible in your last photo are there for a reason, under them are steel rods that pass...
It's good to come clean, people can actually steer you in the right direction, like for example this models. Sailing Catamarans - Mirage - 11m...
It's not considered a tacking outrigger, that's just what the designer calls it. He also calls it polynesian inspired, when in fact it's two...
Ivan, it's really simple. The crossbeam must reach from the outside of the ama, across the main hull to the outside of the other ama. You fix it...
That's because Ontong Java isn't actually an outrigger, it's a catamaran. It does have different length hulls, but that's more or less nominal....
Transparent paint, aka. clearcoat, laquer. If your local marine paint supplier doesn't have it in stock, a high quality automotive one is also an...
Let's do some math, this will give us a better understanding of what's required. (1h x 272kW) + (4h x 200kW) + (5h x 50kW) = 1322kWh + some extra...
Yes, splicing means you put a shorter tube inside the two crossbeams. The ends of the shorter tube must not be cut straight to prevent stress...
You need two connectors spaced as widely apart as possible, so on both gunwales. If the left and right beams are two separate pieces you either...