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Using its own cableships,
France Telecom Marine maintains and lays
new-generation submarine networks in all
seas. Featuring state-of-the-art onboard
equipment and sophisticated remotely-operated
vehicles. |
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Cableships
| Ploughs and Rovs |
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Cableships |
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As
cable ships operator, France Telecom Marine
owns a fleet equipped with state-of-the-art
onboard equipment to perform maintenance and
cable-laying operations. As cable
ships operator, France Telecom Marine owns
a fleet equipped with state-of-the-art onboard
equipment to perform maintenance and cable-laying
operations. C/S Léon Thévenin,
C/S Raymond Croze and C/S Chamarel
- owned by France Telecom Marine subsidiary,
Chamarel Marine Services - are used for maintenance.
C/S René Descartes delivered
in early 2002, is France Telecom's 19th cableship
and the latest addition to the fleet. The
vessel is able to operate in every kind of
project for repair and maintenance operations.
All are equipped to repair multi-branch
systems without interrupting communications
traffic thanks to PGU (Power Ground Unit)
procedures. |
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C/S
Léon Thévenin | C/S
Raymond Croze
C/S
René Descartes | C/S
Chamarel |
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C/S
Léon Thévenin |
Designed
for cable maintenance, the C/S Léon
Thévenin has been optimised for
fast responses and repairs. Based at Brest
on the western-most tip of Brittany, the vessel
is constantly ready to undertake cable repairs
under the Atlantic Cable Maintenance Agreement
(ACMA), on 24 hours' notice.
With
151 operations completed since 1983 - amounting
to 27% of all repairs to Atlantic cables during
that period - the C/S Léon
Thévenin is the most active repair
vessel in its area.
Since 2001, the vessel performed 45 % of all
ACMA’s operations. |
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C/S
Raymond Croze |
| Like
her sister ship C/S Léon Thévenin,
the C/S Raymond Croze is designed
for cable maintenance. Based at La Seyne-sur-mer,
near Toulon on France's Mediterranean coast,
the vessel is constantly ready to undertake
cable repairs under the Mediterranean Cable
Maintenance Agreement (MECMA), on 24 hours'
notice. With 102 operations completed
since 1993 - amounting to 53% of all repairs
on the Mediterranean Sea, Black and Red Seas
during that period - she can repair
all types of submarine cables currently in
use, irrespective of depth. She was upgraded
to repair multi-branch systems without interrupting
communications traffic. |
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C/S
René Descartes |
| The
C/S René Descartes, delivered
in early 2002, is France Telecom's 19th cableship
and the latest addition to the fleet. One
of the most advanced vessel in the world,
she carries new-generation ROVs and ploughs,
including the Elodie 3 m - able to bury cable
to 3m at depths to 2,000 m - which uses the
vessel's 125-ton pulling force very effectively.
Indeed, C/S René Descartes
can hold its position even in extremely adverse
conditions. |
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C/S
Chamarel |
The
C/S Chamarel, based in Cape Town
(South Africa) and operated by France Telecom
Marine subsidiary Chamarel Marine Services,
maintains the 20,000-km-long SAT-3/WASC/Safe
system between the waters off Dakar (Senegal)
and Diego Garcia in the Indian Ocean.
The vessel is equipped with a Dynamic Positioning
System and a specially built Remotely Operated
Vehicle (ROV) Hector.
From her launching in 2002, the C/S Chamarel
performed 14 maintenance operations. |
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Ploughs and Rovs |
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To
bury and inspect submarine cables, as well
as to repair damaged cables, France Telecom
Marine uses a range of state-of-the-art: trenching
machines, underwater ploughs, remotely operated
vehicles with high-pressure water jets designed
and built by its SIMEC subsidiary. Designed
for optimal reliability and manoeuvrability,
all ROVs can perform a range of operations.
Each France Telecom cableship carries cable-ploughs
and ROVs matching the vessel's assigned missions.
Ploughs and ROVs are used to lay and bury
cable both in-shore and in open waters at
depths to
2,000 m. |
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Elise
cable-plough | Elodie 3m
cable-plough | Hector ROV
|Castor trencher |
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Elise
cable-plough |
Elise
cable-ploughs, weighing 19 m.t. each, are
used to embed cables in trenches up to 1,10
cm deep at depths from 1,000 m to 1,500m.
The entire operation is controlled from top-side.
France Telecom Marine has two Elise ploughs. |
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Elodie
3m cable-plough |
| Delivered
in early 2002 by SIMEC, the new Elodie 3m
plough can bury cable to 3 m at depths to
2,000m and ensures consistent cable protection
at all depths and in all types of terrain,
from fine silt to hard rock. France Telecom Marine has two Elodie 3M ploughs. |
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Hector
ROV |
The
Hector ROVs are designed to perform all types
of inspection, maintenance, cable-laying operations
and burying tasks down to
2,000 m.
They feature their own navigation and control
systems (sonar, video cameras, cable-tacking
systems, etc.) for locating and following
cables along the seafloor and a jetting tool
for re-burying operations.
France Telecom Marine owns five Hector ROVs. |
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Castor
trencher |
| Castor
seabed crawler is a tracked ROV with a range
of tools for digging cable trenches in difficult
seafloors down to 1,000 m. Using a cutting
wheel or chain, Castor can dig trenches up
to 2.5 m below the seabed. France Telecom Marine has two Castor
seabed crawler (1 for shallow waters, 1 for deep waters). |
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| 12/03/2003 |
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| © France Telecom Marine,
2003, all rights reserved |
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