StacksVerified U.S. regulatory reference

46 CFR §197.430

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The diving supervisor shall insure that—
  1. (a)SCUBA diving is not conducted—
    1. (1)Outside the no-decompression limits;
    2. (2)At depths greater than 130 fsw;
    3. (3)Against currents greater than one (1) knot unless line-tended; and
    4. (4)If a diver cannot directly ascend to the surface unless line-tended;
  2. (b)The SCUBA diver has the equipment required by § 197.346(a);
  3. (c)A standby diver is available while a diver is in the water;
  4. (d)A diver is line-tended from the surface or accompanied by another diver in the water in continuous visual contact during the diving operation;
  5. (e)When a diver is in a physically confining space, another diver is stationed at the underwater point of entry and is line-tending the diver; and
  6. (f)A boat is available for diver pickup when the divers are not line-tended from the dive location.