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Marine Contractors Services

7/1/2013 12:59:30 PM | by Anonymous

Marine Contractors

Marine contractors are companies which provide services associated with shore lines, waterfronts and work in the ocean. Such services would include dredging harbors and rivers, building docks and piers and building oil platforms and even levees. Such contractor companies are also known to transport, remove and install offshore facilities. These may include fixed and floating structures, subsea pipelines and infrastructures found in shallow waters, deep and ultra deep shores. A marine contractor will assist you to provide the ideal waterside framework for the purpose of business or homes.


Dredging services are an excavation operation or activity carried out by contractors. They are usually carried out at least partly underwater, in seas which are not deep or fresh water areas with the intention of gathering up bottom sediments and disposing them at a separate location. This technique is commonly utilized in order to keep waterways navigable. Contractors use a dredger, which is a vessel, device or machine that is used to remove and excavate material from the bottom of a body of water. Dredging is carried out by marine contractors to create a new berth, harbor or waterway or to deepen facilities which are in existence in order to allow access to larger ships. As capital work usually needs hard material or high-volume works, the work is usually carried out using a large trailing section hopper dredge or cutter section dredge; however for rock works, blasting and drilling along with mechanical excavation is able to be utilized.


A marine contractor can also be involved in the building of various jetties and ramp upgrades. Their scope of work is not limited to services such as: 1) demolishing the existing jetty approach and existing concrete deck units of jetty head. 2) The construction of a new earth filled causeway extension with rock armoring included. 3) The construction of concrete walkways and span approach which consists of concrete piles, head stocks and precast deck planks. 4) Repairs to the jetty head which involves installation to the cathodic repair system and surface patching to the original profile and removal of dummy /unsound concrete from the soffit. 5) Widening of barge ramp with recast concrete planks. 6) Installing new as well as refurbishing existing barth ramp birthing steel fenders and piles. 7) Replacing fixtures to new jetty approaches which involves guard rails, hand rails and bollards and fenders piles. Finally, supplying and installing water shelters on the jetty head which includes electricity supply.


Marine contractors are also able to carry out underwater inspection of selected facility components. Such inspection can involve approaching trestle piles, mooring dolphins and piles, approaching caisson piles and caisson concrete hulls, berth piles and berthing caisson piles and finally cathodic protection anodes. Underwater inspection can also involve cleaning techniques which include grit blasting, water blasting and hand scraping. Some of the inspection techniques which are utilized by contractors include visual inspection, digital still photography, CCTV inspection, magnetic particle inspection, ultrasonic thickness (UT) measurements and cathodic potential (CP) measurements.


Marine contractor companies are also involved in the heavy lifting business. They install structures offshore in all conditions and provide technical solutions to all problems. Some vessels owned by such companies, including the M30 and the Seminole have the capability to install offshore jackets, topsides, structures, modules, etc. Companies have the equipment and skills in-house to perform most installation projects without the help of third parties and are equipped with the experience to take on an Engineering Procurement Installation Commissioning (EPIC) contract including the engineering and fabrication in accordance with the requirements of the clients. Some of the roles taken by marine contractors in offshore developments have varied from preliminary studies and site surveys from the latest facilities to detailed engineering, load-outs, launching, lifting, hook-ups, installation, final testing and commissioning.

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