What’s new?
The SPECTRA was also presented at Oceanology International. It dives to 1,000 metres but weighs only 38 kilos and can be launched by hand. It is intended for inspections and for public authorities, for example in mine countermeasures.
Technical data
| Depth | 1,000 m |
|---|---|
| Weight | 38 kg |
| Propulsion | 7 thrusters |
| Speed | approx. 3.5–4 knots (figures differ depending on the source) |
| Position holding | in 2.3-knot currents from any direction |
| Camera | 4K stereo camera, 60 fps |
| Light | 300,000 lumens |
| Maintenance | Modules can be swapped in 30 min at most |
| Price | on request |
Sonar SLAM explained simply
A 3D sonar constantly scans the surroundings. The computer on board assembles a 3D map from this in real time and works out at the same time where the drone is within it. Because sound also travels through murky water, this works without any visibility. The stereo camera can also measure distances directly in the image.
For hobby pilots
A professional tool, not a leisure gadget. It is interesting all the same: anyone who has ever lost their bearings in a murky gravel-pit lake knows how valuable such a map would be. Until then, our guide What is an underwater drone? will help you get started.
You can find reactions and comments on this article in the Unterwasserpilot forum (in German, English posts welcome).
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