Grand Marine Specialize in docking
float-on & Float-off of specialized, large, technically challenging marine structures in Technically challenging environments.

Specialized in the use of
 "bottom reaction submersible barges"
 Graving docks
and Floating drydocks

Providing complete method statements for
Roll-on & Roll-off, SPMT or Bogies
Skid-on & Skid-off Strand Jack or Hydraulic
Stability & Structural Calculations
Ballasting calculations & procedures
Docking plans
On-site Supervision & guidance

Docking & Un-docking

  • Navy Vessels
  • Oil Rigs, Semi submersible & jack-up
  • Mobile Oil Production Units (MOPU)
  • Cruise Ships
  • Damage Condition Docking
  • Floating homes

Method Statements
  • Working with many Marine Warranty Surveyors  from many countries over many years, Grand Marine has created an effective Method Statement "procedure manual" incorporating the latest Project Management, Operational, HSE, JSA, FMEA procedures in an easy to reference document for your project.
  • Whether Load-out/in, Transport, or Float-off/on we can easily tailor the engineering into a specially designed Method Statement that marine warranty surveyors demand today.

Bottom Reaction Submersible  Barge
  • A bottom reaction submersible barge allows the client to load a structure with dimensions that exceed the barge itself. Detailed stability, structural, and ballasting calculations are used allowing the barge to be ballasted to a predetermined depth using the barge transom grounded on the seabed to allow a calculated timely float-on or float-off in a given marine environment.

  • Pre-existing ballastable barges are common and can be modeled to suite a specific requirement.

  • Barge conversions to "temporary" semi-submersible are commonly engineered on an "as required" basis.
  • Specifically of benefit to the Oil & Gas industry, Jack-up, Semi-submersible, Jack-up ships, Matted rigs, etc.
  • Often used in the constructing and launching of bridge tower base, "template" structures.

     Graving Docks
  • Sectioned graving docks can allow "stacking" of barges and/or similar naval structures

  • Docking plans, and damage condition docking plans accounting for localized stresses have been engineered.
  • Often used for "floating bridge" section construction

 Floating Drydocks
  • Engineered docking plans allow for placement of point load structures minimizing the local stress imposed on the dock and ship.