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A Substation for German Waters

 Veja Mate Offshore Substation
As previously reported at the beginning of 2015, Sea and Land Project Consultants Limited was awarded the detailed design of the Veja Mate offshore Substation foundation structure by constructor Iemants Staalconstructies of Belgium.
Almost completed, and with just three months to go before it is ready to be loaded-out onto a barge and installed in the North Sea 150 km NW of Bremerhaven, the Veja Mate Offshore Substation jacket was designed and constructed according to the Bundesamt fur Seeschifffahrt und Hydrographie (BSH) Standard (Federal Maritime and Hydrographic Agency of Germany).

                               J-Tubes Connected to Jacket Braces

The 1800 Te jacket structure supports 15 cable j-tubes and two boat landings, with associated access infrastructure.

                                                       Jacket Frame Before Up-ending
The structure will be supported on 4 x 2.438 m diameter tubular pipe piles connected to the jacket with reinforced grouted pile-sleeve connections with yoke and shear plates.  
The pile design included the assessment of pile capacity in accordance with the ICP design method and cyclic degradation of the 63m piles in dense sand subject to extreme storm loading following the recommendations of Jardine and Standing (2012). 

                                                                                        Pile Sleeves Under Construction

Sea and Land Project Consultants Limited was commissioned to provide specialist support for the BSH-compliant design and structural analysis for in-place, fatigue, ship impact, transportation, redundancy and on-bottom conditions. Our responsibilities extended to the pile and mudmat design in accordance with the BSH code requirements (DIN EN 1997, DIN 1054, DIN 4017 and EA Pfähle).

                                                 Veja Mate Substation Jacket Nearing Completion


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