KeelCrab ONE

What is KeelCrab ONE?

Underwater Drone with HD camera and 400 lumen-Led, remote control 7″ display with joystick and 7 metres of cable for maintenance and inspection of pleasure boat hulls up to 45 feet in length.

Accessories included:

  • HD camera and two leds of 280 lm each (tot. 560 lm)
  • Remote control with joystick, 7″ display and 7 metre long cable
  • Drone cable 15 metres (specific weight 1190 kg/m3)
  • External power supply box (INPUT 100/240V AC)
  • A.N.C.P. certified soft nylon counter-rotating brush
  • Diver – kit prearrangement
  • Motorised brush set-up

KEELCRAB ONE is the first of a new generation of underwater drones entirely designed and manufactured in Italy (100% made in Italy) to perform robotic hull cleaning and inspection activities for large pleasure boats up to 65 feet.

Characterised by a plastic exoskeleton with a neutral hydrostatic buoyancy, it maintains perfect adherence to the hull thanks to an important suction effect generated by a powerful marinised pump motor, removing and sucking up algae or vegetation that typically form on the live workings of boats during periods of docking in closed waters.

The robot’s movement is ensured by natural rubber or P.V.A. brushes driven by tracks that allow easy manoeuvring in all directions, on any surface and making the drone adept at overcoming obstacles. The high-resolution underwater camera allows the drone to be manoeuvred by means of a wired remote control, displaying the video stream on a 7-inch display, tablet or phone (optional) in high resolution.

In terms of cleaning capacity, the drone is equipped with counter-rotating dampened disc brushes (15mm excursion/surface adaptation) driven by a dedicated waterproof motor with variable bristles (nylon & stainless steel) to guarantee the best cleaning capacity, interchangeable according to abrasion requirements.

These A.N.C.C.P. certified brushes, with proper set-up i.e. following the instructions in our instruction manuals, do not remove antifouling paints but rather extend their effect and life span over time. 

Numerous tests have shown that the constant removal of the first layer of vegetation (3/5 mm) causes a drastic extension of the useful life of the antifouling (which returns to direct contact with the water), which translates into a great slowdown in the formation of “dog teeth” (barnacles) in the medium term, reduced fuel consumption (and related emissions) and maintenance of top sailing performance (thanks to less friction of the hull on the water).

The drone is also equipped with a keelCrab bag filtering system (optional not included) with a variable micrometry nylon filter bag for the recovery of waste material, algae or vegetation, resulting from the cleaning operation.

KEELCRAB ONE is also equipped with the Diver pack predisposition and Motorised brush set-up (optionals not included).

The product warranty certificate is valid for 24 months (excluding consumables) or 500 hours of use.

  • Input power supply: 100/240V AC (standard with Schuko plug). Can also be powered by inverter.
  • Output power supply: 26.5V DC (low voltage)
  • Power consumption: 320 W (can also be conveniently powered by inverter)
  • Dimensions & weight: 45.5cm x 43cm x 30cm (h) weight 10kg (approx.)
  • Dimensions external power supply box: 30cm x 22cm x 12cm (h)
  • Cleaning capacity: 5 m²/min
  • Drone power cable: length 15m (breaking load 160kg (tensile)
  • Replaceable brushes with different abrasive force
  • Weight: 9.5 kg;
  • Length: 45.5 cm;
  • Width: 43 cm;
  • Height: 30 cm;
  • Cleaning capacity: 5 m²/min.
  • Pump power: 30 mc^3 /hour


*vat and shipping not included


€ 3986,00


*vat and shipping not included


€ 3986,00

Extra accessories

Perfect for moving between docks but also for keeping your Keelcrab and electronics safe and secure inside your lockers.

Its bristles remove algae or vegetation and fouling principles above (1-3mm).

Its bristles remove algae or vegetation and encrustation above (3-5 mm).

Filter holder frame with supplied 180-micron nylon thread filter (optional 50 micron or possible customization of filter capacity)

10-meter extension cable and related IP69 watertight connectors to bring the drone power cable to 30 meters total length.

The advantages


Quick cleaning

Keelcrab cleans 2 m² per minute


IP68 camera and LED

HD camera and powerful LEDs allow you to monitor the hull and check the condition


Fast replacement of brushes

Brushes with different abrasive capacity to suit any cleaning need

You might also be interested in:

Ultrasonic antifouling.

“Crew” of boat owners or boat neighbors who share the same passions and needs? Group purchasing through KEELCRAB SHARING with attractive customer benefits!

Frequently asked questions

The keelcrab drone is designed to have a cleaning capability classifiable as a “routine maintenance” of your hull respecting the surfaces, chemicals and technical elements on the living work. Since there is no scale (benchmark) with regard to the ability to abrade and remove dirt that has taken root to a boat hull, we start with the mechanical concept that the drone exerts 3.5 kg of thrust (when fully submerged) toward the hull surface and moves in counter-rotation (counter-rotation effect) a cylindrical inset brush body made of nylon (of 2 different weights) or corrugated stainless steel. Micrometric tests (pre and post robot passage) in a simulated environment (including with wastewater analysis) and practical feedback led us to obtain certification from A.N.C.C.P and to demonstrate that: complying with the starting condition of “perfectly clean boat” and “painted” with new antifouling, a hull is “still on target” (still workable i.e., cleanable by the keelcrab drone) even after a period of 6 to 8 months of complete stationing in port waters.

In the case of paints that are even partially water-soluble (self-sanding) if navigation was not possible, in order to avoid micrometer reduction of antifouling when using the drone, use is constrained to the removal of the central brush body, leaving the dual tasks of keeping the machine in adherence and sucking up silt algae or vegetation to the suction capacity alone. The proportion between suction capacity in kg and robot feed rate, demonstrates how using keelcrab without its brush body simulates slow sailing (less than 3 knots) by stimulating the paint’s natural chemical self-cleaning process.

All consumable and non-consumable items (thus covered or not covered by warranty) are designed with the logic of “do by yourself” allowing maximum freedom and autonomy over drone assistance. Assembly and disassembly operations of individual marinized components are therefore executable by anyone and without the use of special technical equipment. In all cases, replacement or intervention operations are supported by dedicated video tutorials and you will be able to find them: in the restricted area of our website, by sending a w.up to +39 327 029 5197 with a request to open a service ticket or a specific request for the consumable component you intend to replace or by sending an email to with the subject line “video tutorial for technical assistance” specifying the consumable technical component you intend to replace. One of our assigned technicians will follow up with you for quick troubleshooting.

The entire Keelcrab line is entirely designed and manufactured in Italy (100% made in italy) in our production facility in the province of Como, and the average delivery time is about 2 weeks from order.

  • 12-meter boat: 1 hour
  • 16-meter boat: 1 hour and 30 minutes
  • 18-meter boat: 2 hours
All consumables are:
  • Replaceable in total autonomy
  • Available h48 directly from us
  • Durations vary from a minimum of 50 hours to a maximum of 500 hours of use.
There are no other variable costs of maintaining your device in efficiency over the years.

Abundant rinsing with fresh water after each use and sheltering in a dry, sheltered place.

Keelcrab is maintained in perfect adherence to the hull thanks to a major suction effect generated by a powerful marinized pump motor by removing and sucking up algae or vegetation that typically builds up on the live work of boats during periods of dwellings in closed waters. The keelcrab drone is capable of cleaning (once quickly mastered in piloting operations) up to the 95/97% of the surface area of a displacement hull of a sailboat that exhibits characteristics of shapes and geometries classifiable as “standard” in the 10/24 meter range and 85/87% of a planing or semi-planing hull of a motorboat that exhibits characteristics of shapes and geometries classifiable as “standard” In the range 10/ 24 meters.

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