At RS Divers, we can carry out underwater surveys and inspections on all types of ships and marine structures, such as jetties, pontoons, bridges and other structures. If required, we can provide CCTV, still photography and full reports if required.
We conduct surveys for many major clients, such as shipping companies, local councils, the Environment Agency, waterway authorities, construction companies and utility companies. We survey ships, the seabed, dock walls, locks and gates, as well as structures in rivers, lakes and reservoirs.
In-water hull surveys
RS Divers has vast experience in conducting in-water surveys for shipping companies and other commercial ship-owning businesses, including CCTV, still photography and reporting. Our clients request inspections to fulfil a number of requirements, such as:
- Routine/Lloyds/DNV requirements
- Post going aground/hitting submerged objects
- Hull inspection
- Detecting damage/repair requirements
Non-destructive Testing (NDT)
We can provide divers with CSWIP 3.1 and 3.2 certifications to carry out surveys and scour surveys, from ultrasonic thickness to cathodic protection to erosion in all locations, from vessels and jetties/pontoons to bridges, rivers, culverts.
Non-destructive testing (NDT) in difficult environments
We have fully trained teams who can work in confined spaces such as tanks, culverts, tunnels, sewage tanks and outfalls. We have access to the latest underwater Remote Operated Vehicles (ROVs) within small pipelines and outfalls too small for a diver to enter.
Marina Inspection & Maintenance
RS Divers is experienced in surveying and maintaining all aspects of marinas and moorings, from concrete walls and sheet piling, pontoons, and floating structures to anodes, lock gates and piles.
EOD Search & identification
At RS Divers, we work extensively in this field and were involved in the excavation of the routes into Portsmouth for the new QEII Carriers and the widening of a major channel in Southampton.
Working with dredging companies, our divers investigate potential UXO identified by sidescan and multibeam sonar, carrying out circular searches on targets, airlifting around them as necessary to allow classification, and then removing them or marking them if classified as UXO and requiring Royal Navy bombs disposal attendance. RS Divers can provide highly experienced EOD teams for all UXO work.
There is a growing requirement for coastal works, such as erosion control and upgrading sea defences. RS Divers can assist by carrying out surveys using visual or side-scan sonar techniques, plotting and investigating objects of interest, and then marking or removing them.
Harbour Wall & Infrastructure Surveys
From visual inspections to thickness measuring, RS Divers conducts infrastructure surveys on a regular basis, delivering concise reports with measured and CCTV evidence supporting the findings, allowing authorities to manage their estate effectively and efficiently.
Our Inspection & Surveys work
Our recent work includes:
- NDT inspection of sheet piling in The Camber fishing port in Portsmouth Harbour, on the “pocket” where the Wightlink Ferries moor to embark vehicle traffic.
- Surveyed and replaced mooring buoys in the estuaries at Christchurch.
Contact RS Divers for Inspections & Surveys
At RS Divers, we have a diverse collection of skills, experience and tools to undertake a wide range of underwater inspections. Our qualified divers work tirelessly to satisfy and exceed our clients’ expectations from first contact right through to completion. We are available 24 hours a day for emergency assignments and can call on specialist divers and dive supervisors to tackle any job.
Contact us by phone, email or by filling in our contact form.
What is a Lloyds class survey?
A Lloyd’s class survey is a type of inspection or survey conducted by Lloyd’s Register (LR), a leading global provider of engineering and technical and business services. LR is a classification society and a maritime services organisation that assesses and certifies ships, offshore structures, and industrial facilities for compliance with various international standards and regulations.
Lloyd’s class surveys are specifically related to the classification and certification of ships and offshore structures. They involve a thorough examination and assessment of a vessel’s design, construction, equipment, and operational safety, ensuring that it meets the applicable industry and regulatory standards.
Lloyd’s class surveys encompass four main types: Initial Surveys, which assess new vessels for compliance with class rules and regulations; Periodic Surveys, ensuring ongoing maintenance and adherence to class standards; Special Surveys, involving thorough component and system examinations after a set number of years; and Damage Surveys, conducted in the event of accidents to assess damage extent and serviceability.
The goal of Lloyd’s class surveys is to enhance safety and reliability in the maritime and offshore industry. Ships and offshore structures that meet LR’s standards and pass these surveys are awarded classification and certification, which can be important for insurance purposes, financing, and ensuring that vessels can operate safely in international waters. Lloyd’s Register also provides related services, such as risk assessment and consultancy, in addition to its survey and classification activities.
What is NDT testing
NDT stands for Non-Destructive Testing. It is a group of analysis techniques used in science and industry to evaluate the properties of a material, component, or system without causing any damage to it. NDT testing is employed to detect and assess flaws or irregularities in objects or structures, ensuring their safety, quality, and performance. NDT is used in various fields, including manufacturing, construction, aerospace, and more. Some common NDT methods include:
- Visual Inspection (VT): This is the simplest form of NDT and involves visual examination of an object’s surface for visible defects, such as cracks, corrosion, or improper welds.
- Ultrasonic Testing (UT): UT uses high-frequency sound waves to detect internal flaws or defects in materials. By analysing the echoes of sound waves, NDT technicians can determine the size and location of these flaws.
- Radiographic Testing (RT): RT employs X-rays or gamma rays to create an image of the interior of an object. This method is particularly useful for identifying defects like cracks, voids, or inclusions within materials.
- Magnetic Particle Testing (MT): MT is used to detect surface and near-surface flaws in ferromagnetic materials. It involves applying a magnetic field and then applying magnetic particles, which will be attracted to any areas with discontinuities.
- Liquid Penetrant Testing (PT): PT involves applying a liquid dye or fluorescent penetrant to the surface of an object. The penetrant is drawn into surface defects, making them visible under specific lighting conditions.
- Eddy Current Testing (ET): ET uses electromagnetic fields to detect surface and near-surface flaws in conductive materials. Changes in electrical conductivity caused by defects are identified and analysed.
- Acoustic Emission Testing (AE): AE is often used for monitoring and assessing the structural integrity of materials or structures. It detects and analyses stress-induced acoustic signals, which can indicate damage or deformation.
- Computed Tomography (CT): Similar to medical CT scans, industrial CT scanning is used for detailed 3D imaging of internal structures in objects, allowing for a comprehensive analysis of their condition.
The choice of NDT method depends on the type of material or component being tested, the nature of the defects that need to be identified, and the specific requirements of the application. NDT is crucial in quality control, maintenance, and safety assurance, as it allows for the detection of flaws and defects before they can lead to catastrophic failures or accidents.