Mary Bonnin Closes her Dive Locker
EMCM/MDV (Ret) Mary J. Bonnin has passed in an accident on dry land, near her home in Panama City, at age 63.
Wisconsin-born Mary joined the Navy in 1976, finished “A” school to become an Electrician’s Mate (EM), and became one of the first women (following Donna Tobias in 1975) to complete Navy Second Class Dive School in Little Creek in 1977 (with a 200-pound dive rig), graduating at the top of her class, the Honorman position.
After service on a dry dock, in 1982, she completed First Class diving school in Panama City, becoming the first enlisted female diver certified in both air and gas diving (with a 300-pound hard hat rig).
Finishing tours with USS Samuel Gompers (AD-37) working on ships husbandry, she became an instructor training at the Second Class Dive School at NAB Coronado for three years, then shipped out as Master Diver on the salvage ship USS Grasp (ARS-51), having made MD in 1990 by unanimous decision of the Board.
Keep in mind that of the 7,750 dive-certified personnel in the Navy, only about 1,300 are rated as Navy Divers (ND) and only about 75 of those are Master Divers.
She was the Navy’s only female MD until 2024!
She trained for another three years at the First Class school at Panama City, finished her uniformed career at the Naval Safety Center in Norfolk, Virginia as a Master Chief (E-9) Master Diver, retiring in 1996.
During her six years as a Navy diving instructor, Bonnin trained more than 1,000 divers, shaping that very small community for decades.
Mary Bonnin was inducted into the Women Divers Hall of Fame in 2000.
She had three sons, and reportedly kept diving for practice torpedoes while eight months pregnant with her first.
She hosted a great sub-Reddit and made a great podcast appearance on Bottom Dwellers a few years back.
And so we remember,






Fair Winds, and Following Seas MDV Bonin.