B-22

BREECH BASE TWISTLOCK

B-22 Breech base twist lock

The CONTECH® B‑22 breech base twistlock is a heavy‑duty bottom twistlock designed for securing container corner castings directly to the deck of a vessel. It is used in combination with either a raised breech base foundation (FR‑22) or a flush foundation socket (FF‑31), allowing flexible installation depending on the vessel’s deck layout and structural requirements.

Key Features & Advantages

• Fast, tool‑free insertion
  The twistlock is simply inserted into the foundation socket and locked in place by rotating—no extra clearance or side‑space around the foundation is needed, making it ideal for tight deck layouts.
• Works in both tension and compression
  The B‑22 provides secure vertical and horizontal restraint, resisting uplift, downward load, and lateral movement generated by ship motion and sea conditions.
• Reliable securing of container stacks
  By engaging the container’s bottom corner casting, the B‑22 ensures safe and stable stacking for both standard and specialized cargo operations.
• Compatible with multiple foundation types
  • FR‑22 raised breech base for applications requiring extra height or clearance
  • FF‑31 flush socket for installations where the deck surface must remain clear and even
• Marine‑grade construction
  Built for long‑term durability in harsh marine environments, ensuring consistent performance throughout repeated loading cycles.