Marine Design/

MOPUs and Jack-ups

Longitude has a proven track record of successful relocation, upgrade, conversion and transportation projects for mopu and jack-up units

MOPU and Jack-Up Marine Design

Longitude’s scope of off-shore work typically covers aspects of naval architecture, structural, and marine system engineering associated with these units. The services of geotechnical engineers are often required to undertake foundation assessments. This may involve the interpretation of site-specific soils data, testing, calculation of foundation stability and resistance to sliding.

Services for MOPUs and Jack-ups include:

Naval Architecture

  • Intact and damage stability analysis and inclining experiment
  • Application of regulations (MARPOL, SOLAS…)
  • Site-specific environmental loading analysis for Class/MWS/operator approval
  • In-place / nomogram environmental loading analysis for Class/MWS/operator approval
  • Transportation motions (wet and dry transport)
  • Preparation of operations manuals

Structural Design and Analysis

  • Global strength analysis for site-specific / in-place environmental loadings
  • Pinion strength checks
  • Finite element analysis of hull global strength
  • Design of new structures on mobile offshore production units including pipe racks, topside module supports, helidecks, crane pedestals.
  • Cribbage and seafastening design for dry transport on heavy lift vessel
  • Pin hole, leg-to-mat, leg-to-hull fatigue analysis

Marine System Engineering

  • Design and conversion of marine utility systems, including but not limited to sewage, black, grey portable and drinking water and air systems
  • Ballast design/conversion
  • Design and conversion of bilge, fuel oil, oily water separation, foam, marine HVAC systems