Closed Frame
Full perimeter structure with crash frame and top beam. Standard configuration for offshore equipment requiring enclosed protection during crane lifting and sea transport.
Offshore Skids & Engineered Frames – Structural Solutions
- Sizes
- 10ft / 20ft / 40ft HC + custom
- Certification
- DNV 2.7-1 / EN 12079 / ISO 10855
- MGW
- to 25,000 kg
- Steel
- S355 / Q345 (min yield 355 MPa)
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Six standard frame sizes from 10ft to 40ft HC plus custom non-ISO dimensions. S355/Q345 structural steel, SA 2.5 blast cleaning, epoxy primer, marine topcoat. ISO corner castings and certified pad-eyes for four-point crane lifting. Design temperature -20°C to -40°C.
DNV 2.7-1 (DNV-ST-0001) with proof load testing to 2.0x WLL and MPI/NDT on all load-bearing welds. EN 12079, superseded by ISO 10855-1:2018 for new builds. CSC plating for the intermodal supply chain.
Mounting pumps, compressors, generators, and tanks on offshore platforms and vessels for crane lifting and deployment as one cargo carrying unit.
Overview
Certified structural frames for equipment mounting
SCS Global engineers and manufactures offshore skids and engineered frames for equipment mounting, platform installations, and marine transport. These certified lifting frames mount pumps, compressors, generators, and industrial equipment onto a single DNV-rated base structure for crane lifting and deployment as one cargo carrying unit. As part of our DNV offshore marine equipment range every frame ships factory-direct from our facility in Yixing, Jiangsu with DNV 2.7-1 structural certification, full material traceability, and buyer's choice of third-party inspection body. Unlike enclosed containers, these engineered frames have no walls or roof: the structure consists of a base frame with corner posts, crash frame or top beam, certified pad-eyes for four-point crane lifting, and forklift pockets for ground handling.
Specifications
Standard Frame Sizes & Specifications
SCS manufactures six standard frame sizes from 10ft to 40ft HC, plus custom dimensions for non-standard equipment. The 20ft frame carries 21,000 kg payload at 25,000 kg maximum gross weight under DNV 2.7-1. All frames use S355/Q345 structural steel with ISO corner castings and certified pad-eyes for four-point crane lifting.
| Specification | Value |
|---|---|
| Frame sizes | 10ft, 20ft, 20ft HC, 6.4m, 24ft, 40ft HC, custom |
| 10ft external dimensions (L x W x H) | 2,991 x 2,438 x 2,591 mm |
| 10ft tare / payload / MGW | 2,300 kg / 12,000 kg / 14,300 kg |
| 20ft external dimensions (L x W x H) | 6,058 x 2,438 x 2,591 mm |
| 20ft tare / payload / MGW | 4,000 kg / 21,000 kg / 25,000 kg |
| 20ft HC external dimensions (L x W x H) | 6,058 x 2,438 x 2,896 mm; 25,000 kg MGW |
| 6.4m lifting frame | 6,488 x 2,838 x 3,285 mm; 25,000 kg MGW |
| 24ft oversize lifting frame | 7,319 x 3,662 x 1,525 mm; 22,680 kg MGW |
| 40ft HC silo frame | 12,192 x 2,438 x 2,896 mm; payload varies with silo contents |
| Structural steel grade | S355 / Q345 (min yield 355 MPa) |
| Design temperature | -20°C to -40°C |
| Surface preparation | SA 2.5 blast cleaning + epoxy primer + marine topcoat |
| Lifting | 4-point pad-eye with certified slings and shackles; forklift pockets |
| Proof load | 2.0x WLL static per DNV 2.7-1 |
Custom Engineering
Custom Skid Design & Manufacturing
An offshore skid is a certified open structural steel assembly for dynamic lifting at sea, mounting equipment on platforms and vessels. The frame combines a base with corner posts, a crash frame or top beam, certified pad-eyes for four-point crane lifting, and forklift pockets, lifting as a single cargo carrying unit certified to DNV 2.7-1. SCS builds every frame from S355/Q345 steel with SA 2.5 blast cleaning, epoxy primer, marine topcoat, and MPI/NDT on every load-bearing weld. Standard ISO footprints and custom dimensions are available.
Frame Options
Skid Beam & Structural Frame Options
Frame configurations span open, closed, half-height, and CCU variants. Closed frames with crash and top beams give maximum protection during dynamic lifting and are standard for most platform deployments. Open frames with corner posts suit equipment that exceeds the frame height or needs top crane access. Half-height frames serve pipe racks, low-profile equipment, and mud skips. Open-top, closed-top, and double-door CCUs follow ISO footprints, and non-ISO sizes include the 6.4m and 24ft lifting frames plus custom builds, all using ISO 668:2020 corner castings for intermodal compatibility.
Equipment Mounting
Equipment Mounting & Platform Integration
Equipment skids mount pumps, compressors, generators, and filtration onto a single certified lifting frame for deployment as one cargo carrying unit. The engineered frame provides the DNV-rated base, with equipment SCS-integrated or client-supplied. Pump and compressor skids add machined mounting plates, vibration isolation for rotating equipment, and bunded drip trays for fluid systems. Utility skids carry HVAC, water treatment, and power distribution; storage and transport skids cover tanks, pipe handling, and silo frames. Each configuration includes internal lashing points for sea transport and crane lifting.
Compliance
DNV Certified Skid Structures
Every SCS offshore skid is certified to DNV 2.7-1 (DNV-ST-0001), with proof load testing to 2.0 times the working load limit and MPI/NDT on all load-bearing welds. DNV 2.7-1 is the primary standard for offshore containers and frames handled in open seas, covering design, materials, fabrication, and prototype testing, with minimum 1.3 static and 2.0 dynamic lifting factors. Periodic inspection runs at 30-month CSC and 60-month DNV intervals. EN 12079, superseded by ISO 10855-1:2018 for new builds, is the international equivalent. Frame and equipment certification are independent chains, so one frame can host different equipment without re-certifying the base. Third-party verification is available through Bureau Veritas, Lloyd's Register, ABS, DNV, SGS, and Intertek.
ISO 
Bureau Veritas 
DNV 
Lloyd's Register 
BIC 
ABS Standards & References
Standards we build to
Every frame we manufacture is engineered against the standards below. Click through to the source authority for the full text and current revision.
DNV 2.7-1 (DNV-ST-0001) Offshore containers and frames: design, materials, fabrication quality, and prototype testing for open-sea crane lifting. DNV
EN 12079 / ISO 10855-1:2018 European and international offshore container standard. ISO 10855 supersedes EN 12079 for new builds. ISO / CEN
ISO 668:2020 Series 1 freight container corner castings for intermodal stacking and transport compatibility. ISO
CSC 1972 Convention for Safe Containers: mandatory plating for frames entering the intermodal supply chain. IMO
Configuration Options
Frame Configuration Variants
Frame configurations range across open, closed, half-height, and CCU variants, all built on the same DNV testing regime.
Open Frame
Base frame with corner posts, no crash frame or top beam. Suits equipment that exceeds the frame height or requires crane access from above.
Half-Height Frame
Reduced-height variant for pipe racks, low-profile equipment, and mud skips (20ft half-height ~2,800 kg tare, 20,000 kg MGW).
Open / Closed Top CCU
Standard ISO footprint with or without a roof panel for top-loading access or weather protection.
Double Door CCU
Doors on both ends for through-loading operations.
Pump / Utility / Storage Skids
Custom mounting plates, vibration isolation, drip trays and bunding, or tank and silo frames per equipment type.
Applications
Offshore Skid Applications
Offshore skids mount and transport pumps, compressors, generators, tanks, and process equipment on offshore platforms and vessels as a single certified cargo carrying unit. Custom frames accommodate equipment that exceeds standard container envelopes.
Oil, Gas & Energy
Pump, compressor, generator, and process-equipment skids for offshore platforms, FPSOs, and topside installations as single certified cargo carrying units.
Construction & Infrastructure
Utility and equipment frames for offshore wind, marine construction, and infrastructure projects requiring certified transport of oversized assemblies.
Military & Defence
Engineered skids and lifting frames for naval and defence equipment requiring DNV-certified mounting and offshore transport.
Mining & Resources
Custom frames for pumps, tanks, and process plant at remote mine sites and resource projects where modular equipment is craned into position.
Send your equipment drawings and base bolt pattern. We engineer the frame and quote factory-direct with DNV 2.7-1 certification.
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Engineering Resources
Download technical documentation
SCS provides full engineering documentation with every frame order, prepared during production and shipped with the completed unit. CAD drawings and detailed engineering specifications are available on request.
PDFOn request
Offshore Skid Specification Sheet
Technical specifications for standard and custom offshore skids and engineered frames.
DownloadPDFOn request
Material & Welding Documentation
Mill certificates, WPS/PQR welding records, and MPI/NDT test results.
DownloadCADOn request
Frame CAD Drawings
Dimensional drawings for project planning and equipment integration.
DownloadRelated Products
Explore the offshore range
Sister products in the SCS DNV offshore range. Every unit is built on the same Jiangsu line, against the same DNV testing regime.
DNV Cargo Containers
DNV 2.7-1 certified offshore cargo carrying units for platform crane lifting and vessel transfer operations.
dnv certified cargo containers
Hazardous Area Modules
ATEX and IECEx rated offshore modules for explosive atmosphere deployments on oil and gas platforms.
hazardous area modules
Offshore Container Standards
Guide to DNV 2.7-1, EN 12079, ISO 10855, and certification requirements for offshore containers and lifting sets.
offshore container standards guideFAQ
Frequently Asked Questions
Two questions procurement and engineering ask most often about offshore skids.
What Is a Skid-Mounted Container?
A skid-mounted container is a containerised equipment module built onto a structural skid base for transport and installation on offshore platforms. The skid provides the certified lifting frame under DNV 2.7-1. Equipment mounts inside the frame envelope, and the entire assembly lifts as a single cargo carrying unit via offshore crane.
What Is the Difference Between a Skid and a Container?
A skid is an open structural frame for equipment mounting with no walls or roof. A container is an enclosed unit with panels, doors, and weather protection. SCS builds both configurations, plus hybrid units where equipment sits inside a closed frame.