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Cargo Container Securing - Container Lashing

Container Twist Locks

Semi Automatic and Manual Twist Locks

 container semi automatic twistlock

Semi Automatic Twistlock Equivalent C5AM-HC

CV-20-F Equivalent Semi Automatic Twistlock

Container Semi Automatic Twistlock

Semi Automatic Twistlock Large Base 

Semi Automatic Twistlock



BD-V2-F (Equivalent to CV-20-F)

SAT Twistlocks

SAT Twistlock - For Bottom of Stack 

SAT Twistlock

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One Wire

One Wire - Hatch Cover Use 

Two Wire Symmetrical


container twistlock manual left or right locking

manual bottom container twistlock

left locking dovetail container twistlock

Container Manual Twistlock

Container Manual Twistlock Large Base

Container Dovetail Twistlock




Manual Twistlocks

Manual Twistlock

Dovetail Bottom Twistlock (Weldable)

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Left or Right Locking

Left Locking - Hatch Cover Use

55° Dovetail (45° on Request)


transversal dovetail twistlock

Interbox Connectors

BD-B1 Fixed Base Manual Twistlock

Container Dovetail Twistlock Side Handle

Railroad Interbox Connectors

Fixed Base Manual Twistlock 


BD-R1 and RO-RO


Dovetail Bottom Twistlock (Weldable)

Manual and Semi Automatic

Manual Left or Right Locking 

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55° Dovetail (45°on Request)

Container Side Handle

Fixed Base 


breech base twistlock

Semi Automatic Twistlock - NA-3J Equivalent

Flatbed Truck Twist Lock

Container Breech Base Twistlock

Semi Automatic Twistlock NA-3J

Truck Chassis Flat Bed Twist Lock




Manual Left Locking

Equivalent to NA-3J

Weld into Flat Bed

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For Breech Base Foundation

Handle Type

Flat Bed Chassis Installation




Shipping Container Connection System

weldable container twist locks Tandemloc N2501BA Series Weldable Fastmount

Shipping Container Connection Systems for Shore Applications

Weldable Container Twist Locks

End to End

BD-E1 and BD-G1

Side to Side


How Do Container Ships Work?


How Does A Forge Work?


Container Ship Design - Container Barge Design - Container Lashing Plan


Return to Container Securing: Main Catalog Page


Twistlocks, Container Twistlocks, Manual Twistlocks, Semi Automatic Twistlocks, Fully Automatic Twistlocks, Dovetail Twistlocks and Breech Base Twistlocks are all used on container ships to securing ocean cargo containers above deck only.  Below deck, under the hatch covers, stackers or hanging stackers are used.

Between the containers in a stack, you can use manual twistlocks, semi automatic twistlocks or fully automatic twistlocks.  "In the stack" means that both above and below the twistlock will be a container.

The bottom of the container stack is different.  This is the twistlock that goes between the container foundation and the 1st tier container.  Depending on the ship or barge you might find: manual, semi automatic or fully automatic twistlocks or you might find dovetail twistlocks or breech base twistlocks (ro-ro ships) or bottom versions of the standard twistlocks that have larger flanges for the higher compression loads you find at the bottom of the stack. 

In most countries you will no longer find manual twistlocks being used in the container stack as there is risk of falling for the person that is installing or removing them during container operations.  Manual twistlocks or bottom manual twistlocks will still be found on the bottom of the stack as well as on shore, on railroads container trains and in barge use.


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