Doubling Plate

Quad Base Foundation

The AB-A4 Quad Base Foundation by OLIPORTS is a weldable steel doubling plate that secures four twistlocks or D-rings under ISO containers. Available in multiple standard and custom center spacings, and certified by major class societies, it is engineered for maximum strength and layout flexibility in modern port and marine cargo systems.

Double Base Foundation

Available in 203mm, 279mm (Transversal Spacing), 216mm, 258mm, or custom center-to-center configurations, this foundation supports standard ISO container arrangements and provides a shear working load of 210kN, with a breaking load of 420kN. It is fully approved by classification societies such as ABS, DNV-GL, and CCS.