Welcome on NAUVA-E&R website !

NAUVA – E&R aims to :
provide consultant services, engineering studies and team management;
develop and build robots for underwater exploration, inspection and intervention.

As an independant consultant, I offer my experience as an engineer and team leader to help your company achieve success !


Concepts and objectives

The NAUVA Projects aims to create a semi-autonomous underwater robot, without any wire connecting it to the surface. This kind of robot is called an Autonomous Underwater Vehicle (AUV), by opposition with the Remote Operated Vehicle (ROV) which has an umbilical cable for power and control. Hence, the name of the project !


Proto v1

The objectives of the first version of the prototype submarine are to :

  1. validate the solutions used for water ingress protection;
  2. validate the internal arrangement of components (batteries, electronics, ballast and cables);
  3. test navigation on the surface

For now, this prototype uses a 433MHz radio transceiver for control signals, which will be sufficient for the above objectives, while the sub is still on the surface.

This version of the prototype has been successfully tested in a swimming pool in April 2018 ! It remains controllable underwater, down to 1.5m below the surface, as the 433MHz signal manages to go through fresh water.

Proto v2

This second prototype will add several instruments, as well a new water tight cylinder, frame, control system… As you can see, it’s a completely new AUV in fact.

This version will receive the below additions :

  1. a GPS antenna, to get a position while on the surface;
  2. a gyroscope-compass, in order to control the orientation;
  3. an external pressure sensor, to measure the depth below the surface;
  4. an echo-sounder to get the distance to the bottom;

Proto v3

The third version will add other components, which are critical to the functionality of the AUV :
  1. adding a SONAR, to be able to check the surroundings;
  2. adding a ultra-sonic communication device, to be able to communicate with the surface;
  3. adding a RaspBerry Pi3 micro-computer, to control the SONAR and for real-time signal treatment;

Proto v4

The objective of this version will be to demonstrate that a robot is able to identify several different types of objects and interact with them :
  1. adding a robotic arm, with a pincer, to be able to catch other objects;
  2. adding a bin, to carry around all the captured trash;

Proto v5

The last step will introduce a new element into the global solution : a buoy, positionned by GPS, which will act as a drop zone for collected trash, as well as a battery recharge point for one or several robots operating in the same area. More or less, this is the principle of a Roomba robot applied to seafloor cleaning !

Who am I ?

Hello all!

My name is Gaël de Bressy de Guast, I am 38 years old and I live in Nice, on the French Riviera.

I am a Mechanical Engineer, with a diploma from the French Institute for Advanced Mechanics (IFMA) in 2005, which became Sigma-Clermont on January 1st, 2016.

As an engineer, I have been involved in very different types of projects, just to name a few :
– underwater explosion simulation, for the French DCN in Lorient, which since became Naval Group;
– shockwave propagation simulation, within the tank of an oil-filled transformer, for SERGI in Achères;
– package engineering in the offshore Oil & Gas industry, for SBM Offshore in Monaco.

In June 2016, I decided to leave this position and to jump into the adventure of setting up a company, with the NAUVA project. To help me make the right decisions, I have studied at Nice’s EDHEC management school, with the Cycle Supérieur de Management from November 2016 to November 2017.

The idea to develop a robot for depolluting the environment came when I was trekking in the Alps. I always carry my own trash when I walk and I also pick up the ones left behind by some unaware trekker or assiduous polluters. Most trash will end up in the ocean, carried by rain, pushed by winds, until they reach a river and the open sea…

I am convinced that the available technological means, most notably robotics, must help us improve the world we live in. So, why not create a robot able to handle the exact same task : identify a plastic trash, pick it up, put it in a bag and dispose of it in an appropriate location ?

Of course, it will not change the world, it will not solve the issue of pollution, it will not put an end to war, starvation or sickness. However, I know that for the eco-systems that will be free of trash, even for a limited amount of time, it can change everything !

Follow me on LinkedIn and/or contact me by email (contact@nauva-er.com)