Former Navy Diver’s and CO, USS Florikan (ASR 9)

US Navy Inspection Stamp & all Matching Numbers


Schrader was one of the original maker’s of Navy MK V’s
during WW II.
Owned for the last 52 years by a Navy Officer and Enlisted Master Diver.

TOTAL WEIGHT:      53 lbs  BONNET: 31 lbs
  BREAST PLATE: 22 lbs
SERIAL NUMBER:  326B                                     
DATE: 7 – 1943


Copyright 2012 by Land And Sea Collection™, All
Rights Reserved


Presented is a high quality U.S. Navy MK V helmet
made by Schrader in 1943 that comes from the Estate of a career Naval Officer who joined the Service as a young man in 1945
as a seaman recruit. During the course of his 29 year career he rose through the enlisted ranks, became a master diver, Heliox
diver, and then as a commissioned officer advanced in rank to a diving officer, navigator, executive officer and finally as
a lieutenant commander was the captain of a submarine rescue ship. Along the way he served in surface ships and submarines
and is said to have been the first to dive in the freezing waters of the Arctic Circle in 1962. He retired in 1974 as a lieutenant
commander after serving two years as the commanding officer of the USS Florikan (ASR 9) a very rare job for a former enlisted


HELMET & MARKINGS:  Authentic 12 bolt, 4 light Schrader Navy MK V dated AUG
1943 with serial number 326 B on the maker’s tag. All the brails are marked 326 and the lower and upper neck rings of
the breast pate and bonnet are stamped the same. There is the Navy Inspectors mark of a “U anchor S” on the top of the speaker
housing, and 326 is on the opposite end.


was born in Louisville, Kentucky in 1929 and at age 17 joined the Navy as a youngster filled with dreams of adventure
and patriotism. During the course of his naval career he served primarily in three submarines, Bashaw (SSK 241), Bluegill
(SSK 2420 and USS Sea Dragon (SSN 584) which was the sixth Nuclear sub in service. Sea Dragon made the first
Polar Underwater Expedition to the North Pole in 1962. It was during this period that Bob Witten was commissioned as
an ensign. He continued to wear his enlisted submarine qualification silver Dolphins and the silver Master Diver
device though out his career. It also is reported that he was the first person to dive under the Polar Ice Cap. Following
this tour, he served in two submarine tenders, the Nereus (AS 17) and Dixon (AS 37) as diving officer and navigator, and two
submarine rescue vessels, Chanticleer (ASR 7) as executive officer, and USS Florikan (ASR 9) as commanding officer. Robert
L. Witten was commended for his bravery in saving several lives and his exceptional leadership as a ship’s commander,
submariner, deep sea diver and navigator. His five personal awards include the Command at Sea device, the  Navy
Commendation Medal, Navy Achievement Medal, Good conduct Medal with 4 Stars, Combat Action Medal, and eleven Service Medals
and ribbons.
He retired from the Navy on Sept. 1, 1974 as a Lieutenant Commander, but continued his seagoing career in
the Merchant Marine for 20 more years sailing the world’s oceans. He commanded oceanographic research vessels for Nekton Inc.
of San Diego and commanded vessels for Lloyd’s of London Insurance Co.
He died in Las Vegas, NV on July 1, 2005 at age 76, and his ashes were buried at sea in the Pacific during
a shipboard ceremony by the U.S. Navy.

                LCDR Robert L. Witten, USN Ca 1974

       Suited up in a MK V rig
from Arctic home


dressed in the Arctic
  Climbing the hull of Sea Dragon in the Arctic

Considering its 69 years age and use, it is in absolutely fine condition overall. Years ago, the helmet was lacquered
and some of the coating is abraded. There are the kind of dents and abrasions that are there from use, the largest two of
which is on the upper left.
 The air vents are all intact.The right side chin relief valve, spit cock handle, front door wing
nut, all turn easily. The speaker housing is empty. No check valve is fitted, and neither the comm or
the air elbow have a nut. 


 Everything you can think of has a 326 stamp and the customary inspector’s

Like all used diving gear, this is being sold for DISPLAY ONLY.
It should not be dived without having passed inspection by a certified dive shop.

   M Maker’s tag SN 326B 7-43
     Upper & lower neck rings marked 326


Note missing transceiver
       Arrow points to Inspector’s mark 



The comm elbow is on left and the air supply elbow on the right

: Schrader is one of the oldest names in U.S.
diving, second only to Morse. The founder, August Schrader was a creative and inventive German immigrant who originally set
up a shop dealing in rubber products in New York City, NY  in 1839, only a few years after A.J. Morse set up shop in Boston .


In 1845 he began supplying fittings and valves for rubber products made by the Goodyear Brothers. Schrader was
also a maker of daguerreotype apparatus. His original shop was at

115 John

in Manhattan,  NY.
Shortly thereafter he went into partnership with Christian Baecher. Christian was a brass turner and finisher which provided
a foundation for what followed.


The two partners, having watched divers at work at a nearby New York Harbor jetty, decided to improve
the diving helmets in use at the time. In 1849, with the help of Baecher, he created a new copper helmet. Later his interest
in diving led to him to design an air pump.

Around 1890, August Schrader saw the need for a bicycle tire valve. By 1891, he produced the Schrader valve.
The Schrader valve was his most popular invention, and is still used today.


In 1917, the United States Bureau of Construction & Repair introduced the MK V helmet and dress, which then
became the standard for US Navy diving until the introduction of the MK 12 in the late nineteen seventies. Schrader and Morse
Diving were the two original suppliers.

During the onslaught of World War Two only Morse and Schrader were making dive helmets for the navy. Desco
and Miller-Dunn went into production around 1943. In total only about 7,000 MK V helmets were produced by all four companies
during the war years with DESCO producing the most, then Morse, Schrader and Miller-Dunn. The scarcity of the latter two are
the reason they command a higher price in the market. 

By 1915, the Bureau of Construction and Repair had designed the MK V Diving Helmet which seemed to
address many of the problems encountered in diving. This deep-sea outfit was designed for extensive, rugged diving work and
provided the diver maximum physical protection and some maneuverability.
The 1915 MK V Diving Helmet had an elbow inlet with a safety valve that allowed air to enter the
helmet, but not to escape back up the umbilical if the air supply were interrupted. Air was expelled from the helmet through
an exhaust valve on the right side, below the port. The exhaust valve was vented toward the rear of the helmet to prevent
escaping bubbles from interfering with the diver’s field of vision.
By 1916, several improvements had been made to the helmet, including a rudimentary communications
system via a telephone cable and a regulating valve operated by an interior push button. The regulating valve allowed some
control of the atmospheric pressure. A supplementary relief valve, known as the spitcock, was added to the left side of the
helmet. A safety catch was also incorporated to keep the helmet attached to the breast plate. The exhaust valve and the communications
system were improved by 1927, and the weight of the helmet was decreased to be more comfortable for the diver.
After 1927, the MK V changed very little. It remained basically the same helmet used in salvage operations
of the USS S-51 and USS S-4 in the mid-1920s. With its associated deep-sea dress and umbilical, the MK V was used for all
submarine rescue and salvage work undertaken in peacetime and practically all salvage work undertaken during World War II.
The MK V Diving Helmet was the standard U.S. Navy diving equipment until succeeded by the MK 12 Surface-Supplied Diving helmet
in February 1980, which in turn was replaced by the MK 21 in December 1993.

Join Our Mailing List