The SeaBritt Catamaran

Just wanted to show my own creation “SeaBritt”
I have worked on it for almost a year, and I am now very pleased with how it performs.
Intended to be a multi purpose platform for all kinds of water based inspections, surveying and even fish trolling.
It uses a Durandal controller and runs on dual 6S batteries all the way up to 24A total with 12 A LIION normally
It cruises well up to 15 kmh, most efficient around 6-8 kmh
Amp draw at 3kmh; 1,5A, 6kmh; 5A, 8kmh; 9A

Designed to cut through the waves rather than ride over, it handles rough water quite good. The bow uses the same principle as modern surfski race kayaks.

Redundancy has high priority with dual independent water rudders connected to steering, dual side thrusters connected to the throttle output. Dual batteries
The center motor can provide vectored thrust and reverse, this motor is controlled directly to a channel independent from the throttle output. (Vectoring via direct)

LIDAR range sensors front and back.
Dual analog FPV cams front and back, front at 180 degree servo


Here is a video with the boat on auto,
Ardurover Auto mode

Video of the boat at 6 kmh cruise, about 5 amp draw
SeaBritt cruse

An inflight video of 12 kmh cruise
SeaBritt 12 kmh cruise


Nice videos, looking really good. Looks like there’s yaw control on the camera as well which is nice.

Thanks :slight_smile:
Yes, the cam is mounted on a 180 degree servo, its a runcam hybrid2, and a fixed rear camera too
I kind of still like the analog systems!

Here is a sketch with its dimensions.
Pontons are plywood with 200g glass cover, center plate is hot wire cut building foam with 200g glass.
Upper structure is plywood

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A detail of the water rudder, uses a common door hinge, and can be flipped up for transport.
Side motors are 2814/770 with 12x16 counter rotating running on 6S
Center motor is a U5 with 15x9

The center motor and center motor vectoring are via direct channel, primarily for reverse and redundancy