Both the drawing and the link much more useful than the Revell model.
Revell made a big fuss of all of the piping on the deck. The piping they include is actually the hold vent system, much smaller sized piping.
In the drawings of the Esso Gettysburg, the third drawing from the top shows the connections from the manifold behind the deck house going back to the stern pump room. On the Mission T2's there's a set of pipes running forward to the bow pump room as well. The deck level of the midships deck house was basically open with the pipes running above the deck through the space.
The other major flaw of the kit is that the midship deckhouse decks have no camber. It's very nicely represented in the painting of the Esso Glasgow.