Deck Sub-Cellar : A deck located below the cellar deck. Decks below the cellar deck will be designated as Sub-Cellar Deck, Sub-Cellar Deck B, etc. (RP 2G)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}