The 1st Plug & Play System Dedicated To Subsea Industries

Atoll ROV


Atoll is a patented autonomous ROV deployable from a light vessel. The system can perform a fully autonomous approach and docking based on embedded control algorithms.
Once link is contained to the seabed target, Atoll can either transfer power & data, or mechanically engage the target for recovery back to surface and valve manipulation..

Launch & Recovery System (LARS)

Atoll LARS is a standard hydraulic A-Frame upgraded with a secondary latching system. Atoll was designed from the ground up for minimum deck’s footprint

Length


20 ft

Width


7.7 ft

Weight


6 T

Clearance


6.5 m

Main Lift Umbilical

The main lift umbilical is incorporating 6 x 2mm2 plain copper conductors for power transfer up to 100kW (at 2 kV) down to the underwater target, as well as 3 x 1mm2 to supply the Atoll vehicle. 1 twisted shielded-pair as well as 6 single-mode optical fibers transfer data for both target and Atoll at +1GBit/s.

Diameter


20.2 mm

Bend Radius


400 mm

Safe Working Load


180 kN

Length


2,000 m (standard version)

Weight


1405 kg/km (air) 1080 kg/km (water)

Clump Weight

The Clump Weight is used to perfectly align the umbilical with the surface vessel. It is equipped with USBL transponder and camera.

Tether

A tether connects Atoll to the clump weight with strong mechanical terminations on both sides. It is incorporating 12 x 1mm2 power conductors to supply both the Atoll vehicle and the target. The Atoll junction box is easily adaptable for any power configuration.

Diameter


20 mm

Bend Radius


300 mm

Safe Working Load


30 kN

Weight


356 kg/km (air) 0 kg/km (water)

Length


20 m (w/out TMS) 200 m (with TMS)

Docking Station (Option)

A docking station (resident or non-permanent) can be deployed on the seabed for quick-connection to any existing installation (wellhead, sampler, resident ROV, scientific observatory…). The docking station is designed by Forssea on a case by case approach.

Atoll Technical Overview

HEIGHT

1.1 m

HORIZONTAL THRUST

75 kg

LIFTING CAPACITY

1 000 kg (upgrade on demand)

WIDTH

.7 m

VERTICAL THRUST

50 kg

POWER TRANSFERT CAPACITY

100 kW

WEIGHT

95 kg (air) - 0 kg (water)

PAYLOAD

12 kg

DATA TRANSFERT CAPACITY

1 Gbit/s

Applications

Recent Atoll Milestones


Precise and autonomous LBL frame deployment by Atoll


ATOLL full scale prototype to be qualified this summer


1st autonomous power connection performed by the ATOLL prototype in Brest