Why museum ships lose propellers and shafts

Which other museum ships have had their propellers or shafts removed?

Haida and several others have, because removal was once a common way to simplify museum-ship maintenance.

HMCS Haida and possibly HMS Belfast are cited among museum ships altered in this way. Propellers and shafts create underwater surfaces and openings that must otherwise be inspected and maintained. Removing them was once a common way to simplify preservation for a vessel that would no longer operate under its own power. The choice illustrates how museum ships trade operational completeness against affordable long-term survival.