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Harbour works

Responsive and integrated diving systems

Cost & time-saving solutions

STAPEM Offshore performs diversified harbour works as pipeline removals, cleaning of hulls, installation of anodes, welding and cutting works, assistance to dredging, etc.

Spread of means and personnel are available on immediate readiness at STAPEM shore bases.

The latest harbour works performed are:

• Refurbishment of quays, Kwanda Lda, Angola, Soyo
• Cleaning, inspection and repairs of vessels hulls, Congo, Pointe Noire
• Cleaning, inspections and repairs of vessels hulls, Angola, Soyo
• Inspection of quay, SAIPEM, Congo, Pointe Noire shore base
• Wet welding and repairs Aviso LV Lavallée, French Navy, Congo, Pointe Noire
• Uxo clearance, KWANDA LDA, Angola, Soyo quay
• Installation of fenders, KWANDA LDA, Angola, Soyo quay
• Inspections and maintenance sub-sea facitilies, ALNG, Angola, Soyo
• Installation of anodes on quay, TOTAL E&P CONGO, Congo, Pointe Noire industrial shore base
• Modifications of moorings of floating hoses, PAENAL, Angola, Porto Amboim
• Assistance to dredging operations, PAENAL, Angola, Porto Amboim
• Pipeline, floating pontoon and hoses removals, PAENAL, Angola, Porto Amboim
• Assistance to mooring of DEEP BLUE installation vessel, TECHNIP, Angola, Dande base
• Refurbishment of Loading Terminals, SONANGOL LOGISTICA, Angola, Porto Amboim / Lobito

STAPEM Offshore can also provide various surveys services as:

Topographic acquisition
Land or very-shallow water surveys

Hydrographic measurements

Bathymetric survey
Water depth acquisition on profiles

Geophysical survey, sub bottom profile
The sub bottom profiler permits to detect the geological variations in the last sediment layers, few meters below sea bottom. It permits also to visualize the bottom shape, control the water depth and sub bottom sediment layers thickness.

Debris survey with side scan sonar or marine magnetometer
Visual inspection of the sea bed. Debris location and size measurement. The sonar fish is towed on profiles.
The Marine magnetometer survey to identify anomalies present in the site.
The Marine Magnetometer is the best tool for locating metal debris, sunken ships, lost anchors, buried pipelines, and other underwater objects containing ferrous metal that disrupt the Earth’s magnetic field.
Marine magnetometer – towed behind a survey vessel – is used to precisely measure the Earth’s magnetic field; magnetic contour maps reveal anomalies that represent buried ferrous objects.

Core samplings

STAPEM Offshore performs diversified harbour works