What is a U.S. Navy Mark V Diving Helmet?
At the turn of the 20th century the U.S. Navy didn’t have a standardized system for diving. In 1912 U.S. Navy gunner G. D. Stillson submitted a report criticizing the way the Navy conducted its diving program. The Navy agreed and a group was formed in 1914 to standardize equipment and procedures. The Spitcock and Exhaust Valve are on the same side. The breastplate resembles a Commercial breastplate in the shape of the collar strap. In the 1916 U.S. Navy Diving Manual the Mark V Helmet first appears in its adopted form. The breastplate shape is unique to the Mark V being narrow across the shoulders and with a deep drop front and back. The spitcock was moved to the left of the door, and guards specific to the Mark V were added. All U.S. Navy Mark V helmets conform to a standard set of plans issued by the Bureau of Ships. Helmet shell, breastplate, all fittings and attachments are designed so regardless of the manufacturer all equipment would be compatible. Some small variances do occur b
