The wonders of triangulation in structures. It'll pick up however many tonnes inside shipping containers, but hit it in the right place and you get a pancake.
(, Tue 16 Feb 2021, 2:35, Reply)
a 20000 tonne ship (which is small for a container ship) even at super slow speeds is going to have a point impact of 20000 kN and upwards. hard to design for that unless you've got some magical rubber-like substance.
my uncle was the engineer on ( in the mid 80s) the worlds biggest bulk carrier, they had a fucked autonav system (designed by Decca of record fame) that worked fine at sea but in port piloted them into a collision with the quay a couple of times, to spectacular effect
(, Tue 16 Feb 2021, 3:53, Reply)
(, Wed 17 Feb 2021, 14:02, Reply)
(, Tue 16 Feb 2021, 9:12, Reply)