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Submarine Cable Projects

For over 35 years the company has been at the forefront of providing diving support and subsea intervention for major telecommunications and power submarine cable projects. From transoceanic cables stretching around the globe to the roll out of the domestic fibre optic network throughout Australia as well a number of major power cable projects the company has achieved an excellent performance record and reputation for delivering quality services in accordance with client cost and time constraints.

Transoceanic Cables

Of the 13 cables landing in Sydney, NSW which constitutes the major international telecommunications hub for Australia, 12 of those cables have been installed with the Diving Co. as the preferred contractor for both directional drilling diving support and cable landing/cable trenching support:

Pacrim West 1995

Client: Cable & Wireless

The longest continuous submarine cable at the time at 7,062km. Manufactured by Alcatel in Botany, NSW the cable was laid at depths up to 8900m. Diving support included directional drilling and shore end landing.

Southern Cross Cable (SCCN) 1999

Client: Alcatel-Lucent

28,900km submarine network from Narrabeen, NSW Australia to Nedonna Beach, Oregon, USA. Provision of dive support for shore end landing and on-site consultancy and project oversight for landing in Oregon, USA.

Australia Japan Cable 2000

Client: Alcatel-Lucent

12,700km. Sydney, Guam to Japan. Diving support for directional drilling of bores and shore end landings. Consultancy and diving management/client representation of landings in Japan and remedial works in China.

Bass Strait 2 2003

Client: Telstra

242km Telstra fibre optic submarine cable from Inverloch, Victoria to Stanley, Tasmania. Shore end landings, Cable protection with Protectorshell, cable trenching. Remedial work on bore protection system at Inverloch.

Basslink 2005

Client: Pirelli

370km 400KV DC power cable connecting Tasmania to national grid in Victoria. Currently still second longest submarine power cable in existence comprising 3 cables: main power cable, earth return and 12 core Fibre Optic cable. Company provided dive support for shore end landings both at McGauran’s Beach, Victoria and Four Mile Bluff, Tasmania including 18 personnel comprised of dive crews, vessel operators and cable landing coordinators as well as 6 work vessels and associated plant & equipment. The beach landing at Four-Mile Bluff also included installation of Protectorshells and cable trenching operations.

Gondwana 2007

Client: MSD / Alcatel-Lucent

Narrabeen, NSW to New Caledonia. Diving support for directional drilling operations and shore end landing.

Pipe Pacific Cable 1 2008.

Client: MSD/Tyco

6900km cable from Narrabeen, NSW to Guam via PNG. Dive support services for directional bore and shore end landing.

Telstra Endeavour 2008

Client: MSD/Alcatel-Lucent

9,125km cable from Tamarama, NSW to Oahu, Hawaii. Provision of diving support services for directional drilling and shore end landing.

Tasman Global Access 2016

Client: MSD/Alcatel Submarine Networks

Narrabeen, NSW to Raglan, NZ. Diving support for shore end landings.

Hawaiki 2017

Client: MSD/ASN

15,000km cable from Coogee, NSW to Oregon, USA via NZ. Diving support for directional drilling contractors UEA for 2000m directional bore into 35m water depth. Diving support for cable landing.

Indigo Central 2018

Client: Coe Drilling, MSD/Alcatel

Sydney to Perth . Diving support for directional drilling and cable landing at Coogee , NSW including cable protection and post lay burial.

Coral Sea 2 2019

Client: MSD/ASN

Sydney to Port Morseby, PNG & Honiara, Solomon Islands. 4,700km submarine cable. 4 fibre/20Tbps. Diving support for cable landing, cable protection and post lay burial.

JGA (Japan-Guam-Australia) 2019

Client: Coe Drilling

Diving support for directional drilling of bore at Narrabeen, NSW to Coe Drilling. Cable landings at Narrabeen and Maroochydore due Nov./Dec 2019.

Domestic Onshore Cables

Over the last 30 years the Diving Co. has provided and end to end service for submarine cable laying and post lay burial for over 30 cable crossings and in excess of 250km of submarine cable. Recent projects include:

Pittwater NBN Cable Rollout 2020

Client: Downer

Preparation of documentation for relevant approval authorities, logistics, environmental ,transport, duct proving and roping, marine plant and lay barge, as built survey and diving support . Church Point to Scotland island installed and buried April 2020.

NBN Submarine Cable Taree 2020

Client : Visionstream

Provision of environmental services, planning, permits, duct proving and preparation, logistics including transport and crainage, tow vessels and cable drum stands, cable laying, as built survey, and cable burial/protection to specifications.

TPG Submarine Cable Iron Cove 2020

Client: TPG

Provision of environmental services, planning, permits, duct proving and preparation, logistics including transport and crainage, tow vessels and cable drum stands, cable laying, as built survey and cable burial/protection to specifications.

Sydney Harbour Crossing, Dawes Point to Blues Point 2019

Client: Downer

Preparation of documentation for relevant approval authorities, logistics, environmental ,transport, duct proving and roping, marine plant and lay barge, as built survey and diving support.

Rose Bay to Shark Island 2019

Client: Sail GP

Provision of 2 off 48 fibre cables temporarily laid from Rose Bay to Shark Island for worldwide live broadcast of Prestigious F50 catamaran race. Cables recovered and stored in specially fabricated corrals and tested in preparation for 2020 event.

Lake Macquarie 2018

Client: Visonstream

12km submarine Fibre Optic cable as part of the NBN roll out. Provision of environmental services, planning, permits, duct proving and preparation, logistics including transport and crainage, self propelled barge and cable drum stands, cable laying, as built survey and cable burial to specifications.

Cronulla- Bundeena NBN cable 2018

Client: Visionstream

Full end to end cable lay service including burial to 1.2m and cable protection via Protectorshell installation through designated seagrass protection areas.

Iron Cove and Gladesville cables 2018

Client: Vocus

Provision of complete end to end submarine cable lay and burial service.

HKMT-Ryde Project 2018

Client: Visionstream

Provision of full marine cable laying and burial service for three cable crossings in Sydney Harbour from Anzac Bridge, iron Cove Bridge, Gladesville Bridge.

Wisemans Ferry Cable 2018

Client: Tandem Communications

Replacement of damaged submarine cable.

2HUH-20 Lane Cove River Crossing 2017

Client: Visionstream

Provision of complete end to end submarine cable lay and burial service.

Various Cable Projects 2010 – 2016

Client: Silcar, Telstra and TPG

Lake Jindabyne, Lake Burly Griffith, ACT and 15 other cable crossings throughout NSW and Tasmania including the Olex power cable across the Tamar River , Tasmania.

Botany Bay Cable Project 2009

Client: OES/Viscas/Energy Australia

Provide diving support for the directional drilling of 6 bores at La Perouse as well as 24/7 dive support on cable lay barge to lay 6 13KVA power cables from LA Perouse to Silver Beach, Kurnell. Tasks included provision of 24/7 dive support on lay barge, floating plant and vessels for landings at silver beach, remedial burial operations, geotechnical sub seabed core sampling and post lay survey.

Port Stephens Cable 2007

Client : Silcar Communications

Corlette to Pindamar (5km): Provision of diving services, logistics, floating plant and post lay burial.

Derwent River Cable Crossing

Client: Telstra

Hobart, Tasmania. Provision of diving support and full cable lay, protection and jointing services.