OUR PROJECTS

Bewl Water is a Category A reservoir under the Reservoirs Act 1975. An emergency drawdown facility is to be constructed at Bewl Reservoir that can drawdown the upper 5 m of the reservoir within 5 days. The chosen solution is three siphons over the dam, discharging downstream, in conjunction with the uprating of the existing washout facility.

GPS MACS have been appointed as the marine contractor for installation of all underwater and above water infrastructure.

GPS MACS Ltd were contracted by McLaughlin and Harvey to install the scour protection system in front of the newly constructed Berth 4 at DP World London Gateway Port.  The development of Berth 4 is a westward expansion of the container terminal to accommodate future demand for container handling at the Port.

A complex and challenging project in both scope and environmental conditions. In addition to the inherent install challenges, we are operating within a live port, a section of river with fast current speeds limiting installation to slack water only, and black water working with no visibility.

The key to our success was the in-house innovation built into the methodology:

• Designed and fabricated temporary works system welded to the stern of the barge, guiding the lifting frame into final position using hydraulic rams, guide piles and gates.

• 4 mattresses per lift with a bespoke lifting frame designed specifically for this project.

• Dive teams equipped with our Aris 3000 Sonar System, providing visual confirmation of installation tolerance

• Worked 24/7 rotating shifts tidally throughout the project.

Marine and Civil Diving Services Ltd have been contracted by Land and Water to provide diving services for removal of the sheet pile cofferdams at Bishopsford Bridge.

• Dive spread to be set up on the river bank and access shall be via the embankment to the works area

• LAWS shall have excavated the cofferdams and trimmed the sheet piles down prior to MACS mobilisation

• Divers to cut sheet piles 200mm below bed level

Marine and Civil Diving Services Ltd have been contracted by Royal Dock Management Authority Ltd (RoDMA) to design, fabricate and install 4 no. steel plates seal plates over the sluice gate intakes within the KGV lock, allowing inspection works to take place inside the chamber.

Marine and Civil Diving Services Ltd were contracted by Land and Water on behalf of The Metropolitan Police Estates to provide diving services for underwater Cathodic Protection Installation works.

• Work site access will be achieved via a ladder from LAWS Crane Barge

• Inspect LAWS excavated trenching for anodes

• Install sub-bed anodes

• Weld on passive anodes where required

• Install all cabling as per CP design

Marine and Civil Diving Services Ltd were contracted by Southend Council to complete a UXO survey of the works area. Once the data had been processed we then carried out diving operations to excavate, identify and remove any targets.

Marine and Civil Diving Services Ltd were contracted by Topbond PLC on behalf of The Port of Dover to provide diving services for underwater concrete demolition works.

Marine and Civil Diving Services Ltd were contracted by Vinci Facilities Ltd to provide diving services within the Serpentine Reservoir, Hyde Park London. The dive team were required to install a flange plate to the outfall pipe, allowing confined space entry and inspection of the chambers.

Dive team cleared debris from trash screen and install flange plate on outlet headwall pipe. The assisted Vinci in de-watering the penstock chamber. Once drained, the confined space entry and inspection works were completed. The dive team then filled the chamber and pipe with water and removed the flange plates.

Marine and Civil Diving Services Ltd were contracted by Thamescraft Dry Docking Ltd to provide diving services. There were 7 obstructions on the riverbed at Berth 1 of the PLA Navigator terminal, River Thames. The Dive Team assisted the multicat in locating the obstructions and removing them.

Marine and Civil Diving Services Ltd were contracted by GPS Marine Ltd to provide diving services for ITV who were filming a scene at the Kingsferry Bridge, in which a special effect rig propelled vehicles off the bridge at high water. The dive team were deployed to locate and retrieve the vehicles.

Marine and Civil Diving Services Ltd have been contracted to cut off and remove a damaged timber fender pile at GPS Marine Jetty in Upnor

Marine and Civil Diving Services Ltd were contracted by CPBS Ltd to provide diving services for the removal of motor yacht “White Aster II” which had taken on water due to unknown reasons and sunk on the mooring at Poplar Marina. The dive team assisted the Multicat M.P.V. Gundog in it’s removal using airbags and lifting frame.

The “White Aster II” is a 1930’s motor yacht with 2 no. midship engines and estimated weight of 18T. Dimensions are 14.33m length x 3.96m beam x 1.22m depth. The vessel had been submersed for approximately 2 weeks at a depth of 7m. Bed level is alluvium / silt within the lock and divers are expected to have access around vessel, however the Port side is circa 1m off the mooring pontoon.

Divers secured lifting chains around the vessel and onto a lifting frame, which was secured to the multicat hiab. The divers then attached air bags to assist with the lift. Once the vessel was at surface, she was pumped out and the holes temporarily repaired for a safe tow to dry dock.

Marine and Civil Diving Services Ltd were contracted by Marron Civil Engineering  Ltd to provide diving services. Whilst carrying out excavation works for installation of a drainage pipe run, the trench began to fill with water. It was assumed that the water source is the adjacent lake and that the excavation works have caused damage to a buried culvert.

The Dive Team repaired the damaged culvert and drained the site successfully for works to continue.