...The reason for the pill bottle ? the Triangular gussets on the base ring where it attaches to the deck .
The pill bottle , after sanding to that ring is hollow . So the service storage under it can have an open w/t door . This adds more detail to an otherwise plain base area .
Oh , a note here .The cable on the cranes like that , Here in the States travel on Top of the arms in guides and the reel is on the top at the back or next to the base .T.B.