Double Flush Foundation AA-A2
— Secure Underdeck Base for Dual Twistlocks or Stacking Cones —
Technical Specification of Container Double Flush Foundation Base.
- Model: AA-A2
- Center-to-Center: 203mm/279mm (ISO Standard), 216mm, 258mm or Custom
- Safe Working Loads: Share 210KN, and Tension 250KN.
- Breaking Loads: Shear 420KN, and Tension 500KN.
- Material: Weldable Carbon Steel
- Finish: Shop Primer
- Installation: Weld to the deck or hatch cover
- Class Approval: ABS, DNV-GL, CCS, Others
- Application: Underdeck lashing base for twistlocks/cones
- Category: Fixed Foundation Equipment in Hold
- Tags: Flush Foundation, Double Flush Mounting Base, Container Lashing.
* Can be customized according to your needs, type and test class approved on request. Please contact us
The Double Flush Foundation (also named Double Flush ISO twistlock Pocket) by OLIPORTS is a heavy-duty underdeck base designed to secure two twistlocks or stacking cones with industry-standard or custom center-to-center spacing (203mm, 216mm, 258mm). Built from weldable carbon steel and coated with marine-grade primer, it offers a breaking load of up to 500kN. Fully compliant with ISO standards and approved by ABS, DNV-GL, and CCS, it is the ideal fixed lashing base for container alignment and securing below deck. OLIPORTS combines precise engineering and global manufacturing expertise to deliver fast, reliable cargo securing solutions for the world’s fleets.
Compact, durable, and fully ISO-compliant, this fitting is essential for standardized container lashing and securing systems on modern vessels.
Drawings and Features of Double Flush Foundation
Key Features
Note: Need alternate hole spacing? Custom configurations available upon request.
- Supports two twistlocks or stacking cones
- Industry standard 203mm/279mm ISO spacing or customized distances
- Flush-mount design ensures smooth cargo interface
- High tension/shear strength (500kN max breaking load)
- Class-certified by ABS, DNV, CCS, etc.
- Perfect for 20ft/40ft ISO container underdeck configurations
| Model | Lc (mm) | L(mm) | Weight (kg) |
| AA-A2/203 | 203 | 383 | 17.5 |
| AA-A2/216 | 216 | 396 | 18.0 |
| AA-A2/258 | 258 | 438 | 19.5 |
| AA-A2/279 ( Transversal ) | 279 | 459 | 21.5 |
Applications
- Used in cargo holds of container ships and multipurpose vessels
- Installed where two containers meet or at the midpoint of 40ft containers
- Integrated with OLIPORTS lashing systems: Manual / Semi-Auto Twistlocks、Stacking Cones & Tension Elements、Rails & Guide Fittings
Related OLIPORTS Products
Looking for a compact solution for single-point container securing?
Single Flush Foundation for Twistlock and Cone Mounting.
Quad Flush Foundation for Heavy-duty Container Securing.
Single-Point Lashing Base Foundation for Twistlock Anchor.
Double Base Foundation for Heavy-duty Container Fixed Lashing.
Why OLIPORTS?
With over a decade of manufacturing and global distribution experience, OLIPORTS delivers more than just hardware — we deliver container securing systems with intelligence.
With over a decade of manufacturing and global distribution experience, OLIPORTS has developed deep expertise in container lashing and cargo securing systems. We fully understand the design drawings, structural layouts, and mechanical calculations behind every container ship’s securing solution — allowing us to respond quickly and accurately to your technical requirements.
- Deep understanding of ship lashing plans and design drawings
- Support for custom layouts to match your vessel and route
- ISO-compliant and class-approved products with full documentation
- Fast quote turnaround and fewer sample revisions
- Trusted by yards, shipowners, and retrofit contractors worldwide
Built to perform. Certified to last. Delivered on time.
Request a Quote or Drawing
OLIPORTS offer: Technical Datasheet PDF、Material Certificates、DWG or STEP files for design integration、On-request layout support. Our lashing experts typically reply within 24 hours. 💡 Based on your port design, berthing energy, and vessel data, we’ll provide:
⚙️ Recommended drawings & specifications
💬 A tailored quotation with best lead time
📎 Support for class approval documents
Contact Us
We’re here to assist you with any inquiries. One of our product specialists will get back to you within 24 hours with the information you need.
