Specification
Model: 3FX Container Base
Material: High Tensile Cast Steel
Surface Treatment: Marine Anti-Corrosion Blue Primer Paint
Mounting Method: Full Weld-on to Ship Steel Deck / Hatch Cover
Matching Accessory: Standard Marine Bottom Twist Lock
Application: Container Vessel, Multi-Purpose Ship, Bulk Carrier with Container Capacity
Certificates Available: CCS, DNV Classification Society Certificate
Core Advantage: Shock Resistant, Salt Fog Proof, Adjustable Slot Design
Bullet Points
Cast Steel Construction
High tensile cast steel body, withstand heavy sea load & vessel vibration, fully comply with IMO cargo securing regulations.
Slotted Opening Design for Easy Alignment Oval hollow slot allows slight horizontal adjustment of bottom twist locks, solves misalignment issues during container stacking on deck.
Saltwater Anti-Corrosion Blue Coating
Uniform blue anti-rust paint finish, excellent resistance to marine salt fog, extend service life on open deck & cargo hold.
Weld-On Deck Installation
Flat square base design for full welding on ship deck, hatch cover or hold floor; stable mounting without loose displacement during navigation.
Full Marine Certification Support
Available with CCS / DNV ship classification certificates, ideal for container ships, multi-purpose vessels and bulk carriers with container carrying function.
Working Principle
1. Physical Load-Bearing & Fixing Principle
The base is a heavy-duty cast steel bearing support fully welded to the vessel’s deck, hatch cover or cargo hold floor, serving as a permanent load-bearing fulcrum for the four corners of containers:
The bottom corner castings of containers rest on the flat surface of the base, distributing the weight of full cargo loads and preventing local deformation of steel plates under concentrated pressure.
The central oval hollow slot accommodates bottom twist locks. Rotating the twist locks clamps the container bottom corner castings, rigidly locking the container body to the hull structure.
2. Displacement Compensation & Stress Buffering Principle
The elongated central slot is the core structural design:
Vessels generate rolling, pitching and minor hull deformation during navigation. The slotted structure allows slight horizontal sliding of twist locks inside the base, offsetting minor misalignment stress between containers and the deck, and avoiding fracture of twist locks or corner castings caused by rigid extrusion.
3. Anti-Capsizing & Wave-Resistant Principle
Four bases form four-point restraint at each container’s corners:
Lateral thrust and lifting force generated by ocean waves are transferred via the high-tensile cast steel bases to the hull steel structure, restricting sliding, tilting or lifting of containers to eliminate risks of stack collapse and containers falling overboard. The robust cast steel construction withstands alternating impact loads from rough open-sea conditions.
4. Long-Term Anti-Corrosion Service Logic
Special marine blue anti-rust paint coats the entire unit to isolate seawater, salt fog and humid air. It maintains stable welding strength and load-bearing performance for long-term service on open decks and damp cargo holds.
Application Scenarios
1. Ocean-Going Container Ships (Most Widely Used)
Open main deck: 3FX-type bases are welded at all four corners of multi-layer stacked containers, forming a complete securing system matched with bottom twist locks, lashing rods and turnbuckles.
Inner cargo hold: Pre-installed bases on hold floors fix bottom-layer containers and support upper container stacks.
2. Multi-Purpose General Cargo Vessels
These ships carry bulk goods, heavy equipment and containers interchangeably. Container bases are welded on deck temporary stacking zones to flexibly load standard 20GP / 40GP dry containers and reefer containers.
3. Bulk Carriers with Auxiliary Container Transport
Ore and grain bulk carriers carry containers on open decks during empty return voyages, with container bases acting as temporary securing fulcrums.
4. Ro-Ro Ships & Hatch Cover Carriers
Bases welded onto hatch covers enable container loading during hatch cover transportation.
Reserved bases along deck edges of Ro-Ro vessels support small-volume container cargo transport.
5. Port Barges & Inland Container Barges
Lightweight container bases are welded on decks of inland waterway transport vessels and port transfer barges, suited for mild inland and coastal operating conditions.
6. Ship Repair & Vessel Retrofit Yards
New JOYLAND 3FX bases replace rusted or cracked old units on aged vessels; mass pre-welding installation is conducted during new ship construction.
7. Special Working Conditions
Reefer container stacking zones and dangerous goods container storage zones adopt thickened container bases with upgraded load-bearing and shock resistance to meet international maritime regulations for hazardous cargo transportation.
