Ron Signorino Longshore Safety
President at The Blueoceana Company, Inc.
We're borrowing the photographs below from the "Operators" FB page. They show end lifts (and presumed intra terminal transport) of containers.
From my gut, I'm skeptical about end lifting (and subsequent movement) of intermodal containers. I do, however, respect and adhere to the relevant international standards that speak to the design, handling, marking, etc. of containers.
And in ISO 3874 (2017), the tables also shown below appear and are marginally permissive of end lifts. The darkened areas within the table indicate non-approved end lifts, while the limited, lightened areas indicate permissible end lifts.
Also, please take note of the alpha-based designations (see also the relevant table below) and appreciate that only empty "C", "CC" & "D" containers are "allowed" to be end lifted.
Finally, please take note of the warning expressed about "dynamic conditions."