Abstract: A bracket for stabilizing a cylindrical compressed air tank suitable for scuba diving against a bulkhead of a boat, the bracket having an operating position where the bracket arms are extended perpendicular to the boat bulkhead for firmly holding a cylindrical tank in place while it rests on its base and pivotal arms that move downwardly flush with the bulkhead and parallel to in an out-of-the-way position when the bracket is not in use. The bracket is comprised of two identical components which can be interlocked together adjustably longitudinally in length to accommodate compressed air tanks of different diameters. Each bracket component has two separate pieces that have an interlocking hinge, both pieces of which can be molded so that the entire bracket can be fabricated at low cost.