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2020 JOHAN SVERDRUP 2

2020 ASN Sverdrup cableship LDTVO

Post lay burial of seismic fibre optic cable – Johan Sverdrup Field (Equinor)

Place: Norway
Client : Alcatel Submarine Networks (ASN)

Product : Seismic fibre optic
Length: 425 km
Depth: Up to 100 m
Ship: DP
Burial system: ROVJET 1206
Burial depth: 1 m
Period: June – November

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2020 TANNAT and MALBEC Systems

LDTVO 404 ROVJET

Pre Lay Grapnel Run and Route Clearance to a depth of 1,500 m in May.

Separate landing. Laying and burial of 2 fiber optic cables in Las Toninas (Argentina).

Installation of shells.

Location: Las Toninas (Argentina)

Client: Alcatel Submarine Networks (ASN)

Product: Optical fiber

Length: 2 x 7 km

Depth: 15 m

Ship: DP

Burial system: ROVJET 404

Burial depth: 1.5 m

Period: November

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2020 Partnership with UXO Control

LDTVO WIND OF PRIDE Saint Malo

Offshore campaign to identify and eliminate unexposed ammunition (UXO) on the site of the Saint Brieuc wind farm, in France.

Client : Ailes Marines (owned by Iberdrola)

Maritime resources mobilized:

Ship: Wind of Pride
ROVs: Main and secondary

a) The main Underwater Robot (ROV) operated from Wind of Pride during operations is the TRITON XLX200HP
b) Secondary ROV: ROV C 113 (LDTVO)

Sequence of operations:

• The vessel arrives on site;
• A dynamic positioning test is performed;
• The ship arrives in position on the first target identified by the Ailes Marines project leader;
• An ROV is put into the water to carry out a so-called “visual” inspection;

• An identification and classification of the target is carried out on board the vessel:

o If the target is identified as an explosive device, the CROSS is called directly and the instructions given by the authorities will be followed by the ship;
o If the target is identified as non-explosive, it can be hit by the ROV to allow its full identification and then moved by a grapple a few tens of meters out of the installation corridors if it can hinder the smooth running of the installation work of the Saint Brieuc Bay wind farm according to the instructions of the Ailes Marines project leader.
• The operation is repeated for each target identified upstream by the Ailes Marines project leader.

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2020 HAVHINGSTEN System

LDTVO Blackpool UK optic fibre

Laying and burial of 1 fiber optic cable in Blackpool (UK) and 2 fiber optic cables in Houstrup (Denmark). Installation of shells in Blackpool. HDD pulling for the 3 landings.

Separate shore end landings.

Location: Blackpool (United Kingdom) and Houstrup (Denmark)
Client: Alcatel Submarine Networks (ASN)
Product: Optic fiber
Length: 15 km (Blackpool) and 2 x 5 km (Houstrup)
Depth: 15 m
Ship: DP
Burial system: TO Mobile NV
Burial depth: 1.5 m (Blackpool) and 2.0 m (Houstrup)
Period: October (Blackpool) and  June (Houstrup)

 

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2020 Dunant

Pre lay shore end. 5 km cable installation with laying and burial. Installation of articulated pipes.

Location : Saint Hilaire de Riez / France
Client : Subcom

Product : Fibre optic cable 
Length (km): 5
Water depth (m) : up to 15 m
Vessel : DP Vessel
Burial system : TO Mobile NV (jetting)
Burial depth (m) :
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2019 SVERDRUP

Post lay burial of 199 km of sismic fibre optic cables in Johan Sverdrup field (Equinor).

Location : Norway
Client : Alcatel-Lucent  Submarine Networks Ltd

Product : Sismic fibre optic cable 
Length (km): 199
Water depth (m) : up to 100 m
Vessel : DP Vessel
Burial system : ROVJET 1206 (jetting)
Burial depth (m) : 1
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2019 SAFANIYA 6

Provision of personnel and equipment to carry out the trenching of 11 submarine cables, umbilicals and flexibles on Safaniya 6 field.

Location : Safaniya 6 field – Saudi Arabia
Client : Mc Dermott Arabia Company Ltd

Product : Power Cable / Umbilical / Flexible
Length (km): 18.6 km
Water depth (m) : 7.5
Vessel : Barge
Burial system : TM03 (trencher)
Burial depth (m) : 1
Weight (kg/m) : up to 84 (for 115 kV power cables)
Diameter (mm) : up to 215 (for 115 kV power cables)
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2018 INDIGO

Post lay inspection and burial of 39 km of fibre optic cable.

Location : Indonesia
Client : Optic Marine Services International Ltd

Product : Fibre optic cable 
Length (km): 39
Water depth (m) : up to 100 m
Vessel : DP Vessel
Burial system : ROVJET 605 (jetting)
Burial depth (m) : 1.5
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2018 ASC Indonesia

Post lay inspection and burial of 41 km of fibre optic cable.

Location : Indonesia
Client : Optic Marine Services Iternational Ltd

Product : Fibre optic cable 
Length (km): 41
Water depth (m) : up to 100 m
Vessel : DP Vessel
Burial system : ROVJET 605 (jetting)
Burial depth (m) : 1.5
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2018 TRIANEL BORKUM II OWF

Provision of personnel and equipment to carry out the post lay burial of 18 infield power cables.

Location : Trianel Borkum II Offshore Windfarm / German waters
Client : Seaway Offshore Cables

Product : Power Cable 
Length (km): 27
Water depth (m) : up to 33 m
Vessel : DP Vessel
Burial system : ROVJET1210 (jetting)
Burial depth (m) : 1.7
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