planing

Hi there, I have been obsessing over buying a somewhat cheap but otherwise good-condition boat and converting it into an electrically powered boat by repurposing car parts. This has been done before, and I have done so much research by now that I have most of the plan laid out, as well as the...

So--I've been stirring up some trouble here recently on a few threads--Boat suspension and Stepped hulls- 50 knots plus. Why?, specifically. Already a few irons in the fire, perhaps. Some may have noticed. Just look for copious and really long posts, going all over the place. What on earth is...

Hello everyone! I'm working on a second iteration USV platform for various academic research projects and am seriously out of my depth when it comes to picking the correct hull shape (I'm primarily a robotics guy and boat design is more of a hobby for me). I was hoping someone who knows their...

I am pleased to share with you my new version 3.1 of Gene-Hull Dinghy , a spreadsheet application oriented for an early stage project : this version is mostly motivated by a new approach of the keel line shape (i.e. hull bottom center line for a dinghy) now generated with a curvature regularly...

I am pleased to share with you my thoughts and two propositions about the hull shape of sailing dinghies in relation with their planing mode : *1* One of the issues recurently evoked is the shape of the hull bottom center line (also named the keel line, although there is no longer keel at such...

We open this thread together with @Veloceruss as we have collaborated on this project since Russ started his thoughts late 2019, shared with you through 2 former threads : I would like suggestions for design books | Boat Design Net Hot Rod Nesting dinghy | Boat Design Net Russ wanted to build a...

Hello Pete here from SW Western Australia, I could really use some pointers to the mathematics and theory of planing hulls, windsurf and water skis. I'm endeavoring to design and build a sailboat with an outrigger to replace the heavy keel. What I'm looking to understand is: 1. Given that...

Hi Guys, I am new to forum and see their are some very helpful members with good knowledge on the Boat Design topic. I am busy studying boat design through Westlawn Institute of Marine Technology and I am on the lesson of multihull design. So I have started on a 1/10 scale model of a 22ft...

Hey there, I'm reading and reading tons of threads here for a few month now I would like, if possible to have a bit of help on planing hull design/raw hydrodynamic theory. I'm a technical guy, I know that what I ask isn't the clever thing all time, but more a try to understand the RAW theory in...

Preferably plywood* and with free plans, or at least lines. I am thinking about making a Footy RC sailboat. Seems like all the Footy's I've seen have really high displacement to length ratios which I'm sure can't get over their own bow wave. With the light RC gear we have these days, maybe I...

1st thank you for welcoming me to this forum! I will try not to ramble too much as I describe my overall plan, and the reasons for the compromises that must be made to enable this idea/proposal to go from pipe dream to possibility. Additionally I realize that my goal and my ideas regarding this...

Hello, I’m interested in sailing and have been wondering about hull shapes for sailboats. I’ve found information about the type of hull I’ve been thinking about, examples are the Schulz Reverse Deadrise (SRD) and the Ulstein X-Bow, which both have displacement and planing characteristices. My...

Concept 60' planing yacht

Concept 60' planing yacht

Concept 60' planing yacht

I designed and built this Asymmetrical Catamaran from scratch.This is the second one and is designed as a stable fishing boat for 2 with a center console. Length 4.2m Beam 1.830. Planes at low speeds only needs from an 8 to 25hp.

First hull under way.

18mm MDF building jig.

Composite planing boat, powered by 60 hp outboard.

Composite planing boat, powered by 60 hp outboard.