eSubsea design subsea and offshore padeye and lift point according to common industry practice and the following DNV, API and NORSOK offshore standards for design and certification lifting equipment:

  • DNV 2.7-1 Offshore Containers
  • DNV 2.7-2 Offshore Service Containers
  • DNVGL-ST-E273 Portable Offshore Units (DNV 2.7-3)
  • DNVGL-ST-0378 Offshore and Platform Lifting Appliances (formerly DnV 2.22 Lifting Appliances)
  • DNVGL-ST-N001 Marine Operations and Marine Warranty
  • NORSOK R-002 Lifting Equipment
  • NORSOK R-003 Safe Use of Lifting Equipment
Standard Symmetric Padeyes - eSubsea
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Padeye Design Does Not Always Require a Full Engineering Package
Padeye and lift point design is a well-defined, standards-driven calculation — DNVGL-ST-E273 and NORSOK R-002 set out clear methodology for cheek plate sizing, weld verification and design margins. For straightforward lift points on standard subsea equipment, the calculation does not need weeks of engineering time.

esubsea.ai runs the full DNV-ST-E273 padeye calculation automatically. Enter your sling load, geometry and material grade — receive a complete, traceable calculation output with unity checks and weld verification within minutes. Full signed design reports are available when certification is required.
Typical saving: Single padeye calculations via esubsea.ai can be completed at a fraction of the cost of a full engineering assignment — ideal for in-house verification, budget estimation or tender preparation.

DNV Padeye Design Calculations

A design report with the necessary padeye design calculations and lift point design calculations for certification, typically as a DNV Padeye, will be issued. The design report will also normally include the lifting set design calculations. A pad eye load test procedure can be made for the actual load testing set up as most standards require load testing as part of the lifting eye calculation and padeye certification.

Non symmetric Padeye - eSubsea
Need help to verify strength or design, analyse, document and load test padeyes? Contact us for more information!

DNV Lift Point Design

The following will be included in the offshore or subsea padeye and lifting point design report:

  • Design Factor, Skew load factor
  • Safety factor
  • Design load and padeye side load
  • Bearing pressure calculations
  • Tear out calculations
  • Pad eye check plate welds
  • Combined stress
  • Lift point load test requirements
  • Lifting set design

The design calculation will be the basis for shackle and lifting set sizing, design, testing issued for approval and certification of the subsea padeye or subsea lifting point.

Supported Symmetric Padeye - eSubsea

The padeyes and lift points geometry will be designed to exactly match the standard shackles rated to what the various standards specify. The shackles will typically be standard Green Pin bow shackles with safety bolts. The load direction on the pad eyes are normally 30 degrees angle from vertical, but custom pad eyes can be designed and analysed for any angle if required. The welds to the ground material shall be full penetration welds and the quality of the ground plate with tensile stress must be Z-quality.

The padeyes and lifting points must also be designed for the lateral load as defined in the design code. The lateral side load is ranging from 3 to 20 degrees based on the code and design class chosen.

Translate this page to Norwegian – Dimensjonering og Design av Padeye og Løftepunkter