Scuba Diving

Scuba Diving Flag
Warning Flag Rules
Scuba divers must display a warning flag when diving:
  • The diver’s flag must measure at least 15 inches horizontally and 12 inches vertically.
    • Both sides must have a red-colored background bisected diagonally by a 3 inch wide white stripe.
    • There is also a blue and white diver’s flag authorized under the federal rules of the road.
    • No more than 4 divers shall dive under 1 flag.
  • Divers must remain within 50 feet (measured horizontally) of the warning flag.
  • If a group of divers is using a contained area, the perimeter of the area must be marked:
    • The area must be outside the normal area of navigation.
    • These markings must consist of the official diver’s flag and must be placed around the perimeter of the diving area at intervals of not more than 150 feet.
  • Do not place a diver’s flag where it will obstruct navigation.
  • The diver’s flag may be displayed on a watercraft or float or be anchored to the bottom.
  • The top of the flag must be at least 30 inches above the surface; however, boats not involved with the diving operation must remain 150 feet away from a flag.
  • Persons who dive at any time from sunset to sunrise must carry a diver’s light visible when above the water for a distance of 150 feet.
  • Scuba or skin diving while in possession of a spear is unlawful from sunset to sunrise. 

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