StacksVerified U.S. regulatory reference

46 CFR §197.334

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each open diving bell must—
  1. (a)Have an upper section that provides an envelope capable of maintaining a bubble of breathing mixture available to a diver standing on the lower section of the platform with his body through the open bottom and his head in the bubble;
  2. (b)Have lifting equipment capable of returning the occupied open bell to the dive location;
  3. (c)Have an umbilical; and
  4. (d)Be—(1) Made of corrosion-resisting material; or
    1. (2)Protected against and maintained free from injurious corrosion.