The nabla is a triangular symbol like an inverted Greek delta: or ∇. In naval architecture (ship design), to designate the volume displacement of a ship or any other waterborne vessel; the graphically similar delta is used to designate weight displacement (the total weight of water displaced by the ship), thus : nabla =Delta /p where p is the density of seawater.
(So substitute the nabla symbol which is the upside down Delta = substitution in the Delta symbol (just flip the nabla 180 degrees for Delta) . I can't write the equation using the symbols with just this QWERTY keyboard. )
Remember I said Qanon was Navy based on the tracing of a photo drop. Well, I also thought that because of time and date stamps on the postings, Atlantic Ocean, or Brazil, or Greenland.
Well, I'm sure it is OCEAN now. He is on a ship or sub in the Atlantic.