Floating versions of those machines (dredging vessels) are in the 300M range. And the offshore installation vessel Pioneering Spirit came in at 2.6B: https://en

Floating versions of those machines (dredging vessels) are in the 300M range. And the offshore installation vessel Pioneering Spirit came in at 2.6B: https://en.m.wikipedia.org/wiki/Pioneering_Spirit_(ship) https://en.m.wikipedia.org/wiki/Pioneering_Spirit_(ship)