Assertion: snorkel's tube | /r/HasProperty | long
Facets:
value: sufficiently
type: DEGREE
Source sentences:
text: Tube 14, with a valve assembly 36 and an adjustable threaded butterfly valve 57 at its upper end, curves through an angle of approximately 90 degrees from chamber 28 to valve assembly 36 and is sufficiently long, generally about fifteen inches, so that the valve assembly 36 extends above the water line 38 when the swimmer's head 11 and body 17 are horizontally oriented during swimming.
text: Tube 14, with a valve assembly 36 and an adjustable threaded butterfly valve 57 at its upper end, curves through an angle of approximately 90 degrees from chamber 28 to valve assembly 36 and is sufficiently long, generally about fifteen inches, so that the valve assembly 36 extends above the water line 38 when the swimmer's head 11 and body 17 are horizontally oriented during swimming.
text: Tube 14, with a valve assembly 36 and an adjustable threaded butterfly valve 57 at its upper end, curves through an angle of approximately 90 degrees from chamber 28 to valve assembly 36 and is sufficiently long, generally about eighteen inches, so that the valve assembly 36 extends above the water line 38 when the swimmer's head 11 and body 17 are horizontally oriented during swimming.
text: This anatomical dead space limits the size of snorkel tubes; a snorkel tube merely extends the anatomical dead space, and if the tube were too long, the tidal volume would keep circulating air within this larger dead space, and you would not get the oxygen you need (this also explains why old diving suits needed pumps to continually force air.