Rough water capability

[Maritime]

I'm looking for a platform that can operate at 50knots in 3' waves. Any ideas ?
My current thinking is low buoyancy and surface piercing.

[1coopgt]

Your going to need a big Deep V mono. Smaller monos you'll lose in the swells between the waves. Granted I'm use to Lake Ontario where 3 foot wave will beat on 1:1 boats . Where are you planning on running it ?

[Racingjake]

I got a few SeaDoo's and it wouldn't be too hard to turn one into an RC SeaDoo. Don't know the legal side of doing one on the water but it would be fun.

[Maritime]

DSC_0907 (1).jpgThis is where I started. 60" Bonzi, fast but very unstable in any sea state other than dead calm.
Note payload launcher integrated into deck.
Interesting question, where do I intend operating it ? You name it, port security or any contested waterways.
Has anyone ever built a shallow running high performance UUV ?
Sea doo is probably too large. My ideal platform is less than 50 lbs and small enough to hand launch.

[1coopgt]

So what is your intent with this boat ? 50 LBS?

[Maritime]

The intent is to find or develop a boat that weighs less than 50lbs ( including 10lbs payload ) can run at 50 knots in 3' waves and has a range of two to three miles. Simple :)

[1coopgt]

Sorry that's not a hobby grade RC. That would be something the military or terrorist would use. The Military have contractors that already have that tech.

[Maritime]

You would be surprised how much innovation comes from "men in sheds". If you look at the unmanned underwater vehicle market most of the companies grew from a garage to a point where they bought up by a defense prime such as BAE or GD. As a defense contractor myself ( a very small one ) I find talking to "hobbyists" a great source of knowledge. As to the tech already existing; I have not seen a surface or subsurface running solution.

[lohring]

You need a wave piercing hull.

Lohring Miller

https://en.wikipedia.org/wiki/Wave-piercing_hull

https://continuouswave.com/ubb/Forum1/HTML/013843.html

[Peter A]

So you want to build an Rc boat that will do 60 mph in 3' waves? Are you intending to do electric power?
Getting a large mono to run well at 60 mph on flat water is one thing, in 3' waves, that is a recipe for disaster. You need to start small and build up experience to achieve anything close. then you have to consider insurance/liability issues with a large rc boat.
It's all very well to dream, but the realities can bring you back to earth pretty hard.
With 3' waves, how about an rc surfer?

[Maritime]

Hi Peter. Good points. I am intending to use electric power and I agree that it is a challenge. Can you tell me more about an RC surfer?
I have two concepts that I'm looking to explore further.
1 A low buoyancy surfboard type vessel that can duck through the waves. Probably with twin jet drives.
2 A super-cavitating shallow running UUV with counter rotating props on the nose, looks a little like an AIM 9 sidewinder missile. Based broadly on this :

https://www.businessinsider.com/juliet-marine-systems-ghost-boat-2016-11

I do worry about communication data rates with something submerged.

[Peter A]

Hi Peter. Good points. I am intending to use electric power and I agree that it is a challenge. Can you tell me more about an RC surfer?
I have two concepts that I'm looking to explore further.
1 A low buoyancy surfboard type vessel that can duck through the waves. Probably with twin jet drives.
2 A super-cavitating shallow running UUV with counter rotating props on the nose, looks a little like an AIM 9 sidewinder missile. Based broadly on this :

https://www.businessinsider.com/juliet-marine-systems-ghost-boat-2016-11

I do worry about communication data rates with something submerged.

Just google rc surfer.

[RaceMechaniX]

I do not believe a model boat under 1m will handle 3' waves at 50 knots. Maybe a 2m hull or something the size of a sitdown jet-ski. A lot will depend on the frequency and shape of the wave. You will probably want to look at modern offshore v-hull powerboats with self righting capability. Outside of the hull type, the power system will be very difficult. You did not mention the mission duration, but any system will likely need 20-50hp depending on the weight and hull drag. An electric power system will only be able to run at this level for minutes maybe less and be very expensive.

[Maritime]

DSC_0047 (2).jpgTyler, Many thanks for your input. The range I'm looking for is up to 2 miles so 3 minutes max.
I do have a UAV ( see photo ) to deliver the same payload but piloting, airspace issues and visibility to bad guys are all hurdles.
My budget for a production system is less than $4000 per unit. In an ideal world it would be bio-degradable.

[lohring]

Offshore power boats are deep Vs and have issues doing 50 knots in 2 meter (6') waves. This is a picture of a 35' deep V in those seas at around 30 knots. That's a 10,000 boat several feet out of the water. Wave piercing reduces these problems. Hydrofoils are another solution, but getting a model size boat that far out of the water isn't possible. Fifty knots is at the upper range of operation for non cavitating foils. A combination might be best.

Lohring Miller

H9 action 09.jpg

https://iflysail.com/