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  • Location :CASABLANCA Harbor
  • Project duration :4 Days
  • Year :2020

Installation of a cofferdam to replace the speed log of the MV « CIELO DI RABAT »

Following MAHMOUDI SHIPPING order in February 2020, OSS carried out the installation of a cofferdam to allow the replacement of the speed log from the inside hull of the MV « BORA ».

This operation lasted 4 days and required a careful measurement in order to make and install a cofferdam specially adapted for a narrow place.


  • Doing this work between two berthing operation.
  • Make a specific cofferdam, adapted to the bottom hull.
  • Keeping a 100% waterproofness during four hours.


The Speed log has been safely replaced by the MV « CIELO DI RABAT » crew.