English: Scale comparison of neutral buoyancy pools. Created in AutoCad and then exported to Inkscape. Font used is Sans, font size is 8. ESA's Neutral Buoyancy Facility was left out due to a lack of information on its shape.

NBS:

• Diameter of 2.4 meters (8 ft) and a depth of 2.4 meters (8 ft).
  
• Diameter of 7.6 meters (25 ft) and a depth of 4.6 meters (15 ft).
  
• Diameter of 23 meters (75 ft) and a depth of 12 meters (40 ft).
  

WETF:

• 24 meters (78 ft) by 10 meters (33 ft), with a depth of 7.6 meters (25 ft).
  

NBL:

• 62 meters (202 ft) by 31 meters (102 ft), with a depth of 12 meters (40 ft).

Hydro Lab:

• A diameter of 23 meters (75 ft) and a depth of 12 meters (39 ft).
  

NBF (CNSA):

• A diameter of 23 meters (75 ft) and a depth of 10 meters (33 ft).
  

NBF (ESA):

• 22 meters (72 ft) by 17 meters (56 ft), with a depth of 10 meters (33 ft).

WETS:

• A diameter of 16 meters (52 ft) and a depth of 10.5 meters (34 ft).
  

NBRF:

• A diameter of 15 meters (50 ft) and a depth of 7.6 meters (25 ft).