Boring a ship's large driveshaft - photo

[Ralphxyz]

Definitely not QCTP (Quick Change Tool Post)!

[Toolmaker51]

Definitely not QCTP (Quick Change Tool Post)!

Which one? Note carriage closer to headstock, larger yet, appears same size toolholder. Not QCTP. That bit looks 4" square and 30"+ long. At those dimensions, it weighs ~135 pounds. Not incredibly heavy, but without a good place to stand...
And a freebie, courtesy EMJ [IMNSHO pick as best material supplier] https://www.emjmetals.com/pdf_indexe...ght_Tables.pdf

Large lathes, 20" swing and up, depending on the shops work, are best served by bridge or gantry crane. Loading with a forklift and slung material is a small nightmare in coordination. A smaller manual chain fall from main hook [or the rail, even better] is my favored type of manipulator. Powered types don't inch well.