Below this again is one still lower-deck called the orlop-deck.    From Wordnik.com.  [How Britannia Came to Rule the Waves Updated to 1900] Reference

"Battered chain-gangs of the orlop, grizzled draughts of years gone by ...".    From Wordnik.com.  [CHAPTER XXXV] Reference

He looks down the orlop-deck aisle running forward between the piled casks and crates.    From Wordnik.com.  [The Terror]

I wonder why Steve didn't just use the old reliable, "Arrr, how about comin' below to the orlop and seein' me etchin's?".    From Wordnik.com.  [See? Paris is NOT a Slut.] Reference

Swinging in his hammock, the midshipman holds Blackwood to the smoky lamp of the orlop, as he plunges and pitches around Cape Horn.    From Wordnik.com.  [Blackwood's Edinburgh Magazine - Volume 62, No. 384, October 1847] Reference

The water had now reached above the orlop-deck, and all further attempts were unavailing.    From Wordnik.com.  [The Pirate] Reference

I heard the sweet, vital tones of her voice, and with this in my ears I caught up my lanthorn and so descended to the orlop.    From Wordnik.com.  [Black Bartlemy's Treasure] Reference