Case Studies > Project & Construction Management

Heavy Cargo Seafastening Design and Install

For over thirty years, Houlder has designed and installed heavy cargo seafastening for a variety of standard to ultra-heavy break bulk cargoes. Our team of designers and engineers support quick approval, fabrication and load-out. We provide a turn-key package from pre-survey and approval through to installation.

Pre-survey

On site vessel survey facilitates the rapid identification of the most effective heavy cargo seafastening options. Specific tasks undertaken by the project team at this initial phase include;

  • Assessment of suitable locations to ensure efficient loading
  • Detailed survey to reduce design time and increase accuracy of structural analysis
  • Achieving Pre-approval with Class/warranty and all other regulatory bodies to facilitate a smooth, efficient process.

Design Engineering

Using DNV GL rules/guidelines, as applicable, Houlder provides:

  • Detailed report of calculations; certifications; final drawings of lashing and stowage arrangements.
  • Local vessel strength verification for cargo load as required including FEA (below)
  • Class / MWS approved vessel deck layout and loading plan drawings.
  • Fabrication drawings for any specialist brackets, grillages or frames.

Fabrication and Installation

Houlder’s self-contained site team of  Engineers, Construction Supervisors and Coded Welders  can be mobilised to heavy cargo seafastening installations worldwide within 24 hours.

Benefits include;

  • Complete turn-key provision including all equipment, NDT & final Class / MWS sign-off.
  • Minimise delays if changes are required during loading.
  • Single point of contact between client, ship and marine warranty surveyors to achieve an effective and safe solution.

Houlder’s track record of heavy cargo seafastening is ensuring oil & gas installations, pipe and cable laying, offshore wind construction, marine transport and other offshore operations run safely, smoothly and cost effectively. Clients include Siemens Wind Energy, TP Shipping, Schlumberger , Shepherd Offshore, GE Oil & Gas, Reef Subsea and Gardline Geosciences.