Reconnaissance cable route survey & detailed survey
|Service||Reconnaissance cable route survey and detailed survey|
|Location||Tenerife, Canary Islands|
|Water depth||5-1160 m|
|Project duration||40 days (November – December 2019)|
|Industry||Submarine Power Cable|
In November 2019, ACSM has been awarded by a major power cable company to execute preliminary inspections and surveys to support the design of a submarine electrical interconnection cable between Tenerife and La Gomera, in the Canary Islands. The scope of the work consisted in providing reconnaissance cable route survey and various engineering studies along the two alternative routes identified, for a total of 68 kms.
The activities provided were as per follows:
Cable Route Survey (divided in nearshore and offshore):
- Reconnaissance survey.
- Geophysical detailed survey.
- Geotechnical survey.
- Route engineering.
- Hydro-sedimentary study.
- Navigation and fishing study.
- Cable Burial Risk Assessment
The Cable Maintenance ROV (CMROV) is a free swimming or tracked hydraulic ROV with 300kW/400HP providing an efficient and cost-effective solution for maintaining and installing regional and intercontinental submarine cable systems. This type of ROV has an extensive track record for operating globally in extreme environmental conditions and a variety of seabed soils.
The subsea cable route survey between Tenerife and La Gomera consisted in 4 different phases:
- Reconnaissance survey – (MBES)
- Detailed surveys (both inshore and offshore) – (MBES, SSS, SBP)
- Benthic habitat video inspections – (Video Inspection)
- Geotechnical survey – (CPT, VC, Grabs)