__ Tank, Saltwater Device to Aid Calm
This page is the CodyCross answer for the clue below from TV Station, Group 619, Puzzle 4 (Documentaries).
Question is: __ Tank, Saltwater Device to Aid Calm
and the answer is: FLOTATION
Word Meaning:
FLOTATION — A state of floating, or being afloat.
Definitions from Wiktionary.