<div style="text-align: justify;"><span style="color:#00008B">R-6 heading to sea in August, 1945 for tests of the newly installed snorkel device. This device would allow the submarine to run its diesel engines while at periscope depth, giving it a significant tactical advantage by eliminating the need to surface to charge batteries. Unfortunately, the technology came to the U.S. too late to have any impact on the war effort. By the time a design had been adapted from the original Dutch drawings and testing had begun, the war in the Pacific had concluded. The snorkel would play a large role in post-war submarine operations, with nearly every USN submarine adapted to use one.
<small>This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.</small>
[[File:Red bar sub new.jpg]]
[[File:R-6 garganonsnorklemast.jpg|left|500px]]
[[File:R-6 garganonsnorklemast.jpg|left|500px]]
<div style="text-align: justify;"><span style="color:#00008B">R-6 snorkel mast with Michael Gargano sitting on the engine exhaust, August 1945. The head valve of the snorkel can be seen above Gargano's head. The induction head valve was an extremely important part of the design. It had a round float attached to a lever arm. If the boat dipped to low or if a wave washed over the head valve, the float would shut a valve disk on top of the assembly and prevent water from being ingested into the engines, which is a very bad situation. The float valve was nearly directly copied from the original Dutch design, and it had been adopted by the Germans. USN testing showed that that design was not sensitive enough to close off for spray nor did it close tight enough. Leaks were commonplace. Iterative testing eventually led the USN to alter the design significantly. As adopted for operational use the head valve was pneumatically actuated by three electrodes paced evenly around the rim of the head valve opening. When one or more of the electrodes was touched by seawater it closed an electrical circuit that actuated a pneumatic valve that instantly closed the head valve tightly and firmly. Once the electrodes were clear of water the valve would release the air pressure and the valve would pop back open.
<small>This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.</small>
[[File:Red bar sub new.jpg]]
[[File:R-6 crew relaxing1.jpg|left|500px]]
[[File:R-6 crew relaxing1.jpg|left|500px]]
[[File:R-6 crew relaxing2.jpg|left|500px]]
<div style="text-align: justify;"><span style="color:#00008B">R-6 crew relaxing while in port at Fort Lauderdale, Florida, August, 1945. The war had just ended when this photo was taken and the men of our submarines could relax for the first time in three and a half years. The [[R-10|'''R-10 (SS-87)''']] is moored alongside.
<small>This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.</small>
[[File:Red bar sub new.jpg]]
[[File:R-6 crew relaxing2.jpg|left|500px]]
<div style="text-align: justify;"><span style="color:#00008B">A photo taken just after the one above from a slightly different angle. More details of the R-10 can be seen. One crewman is sitting on a chair on the deck of the R-10. Fort Lauderdale, Florida, August, 1945.
<small>This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.</small>
[[File:Red bar sub new.jpg]]
[[File:Red bar sub new.jpg]]
Revision as of 12:43, 18 September 2023
On September 26, 1921 R-6 sank at her mooring in San Pedro Harbor, California, due to a "malfunction" in one of her torpedo tubes. USN submarine torpedo tubes have an interlock system that prevents both the breech and the muzzle end of the tube from being opened at the same time. Either this system did not operate like it should have (very unlikely), or the interlock system had been deliberately disengaged for some reason and both ends of the tube were mistakenly opened (likely). This would have flooded the boat very quickly. As far as we can determine no one was killed or injured in this accident. This photo shows R-6 alongside the R-10 with her bow sticking up above the water and with her stern sunk to the bottom. The minesweeper USS Cardinal (AM-6) is standing by in the background.
USN photo in the private collection of Ric Hedman
The combined efforts of the crews of the R-10 and the Cardinal sealed up the R-6 and pumped out the water. She was fully raised on October 13, 1921 and towed to the Mare Island Navy Yard for reconditioning. Surprisingly she had suffered little damage and after a thorough drying out and cleaning was put back into full service.
U.S. Navy photo NH 93419 via NHHC.
R-6 seen from the air, port side, somewhere in the Atlantic, 1940-1941. For the R-class it was normal to have the deck gun stowed in an aft pointing position. There was a bracket on the forward end of the fairwater that the barrel could be clamped to. The R-class was unusual in this respect. R-6 had sat in reserve with the mothball fleet in Philadelphia from 1931 to 1940, when the war conditions in Europe prompted the Navy to put the reserve O and R-class boats back into full service.
USN photo in the private collection of Ric Hedman
R-6 crew, 1944. Michael Raymond Gargano, Signalman 2nd Class, is fifth man from the right in the back row. This is the crew that did the early work on developing the first USN submarine snorkel. The fifth man from the left in front row is Ensign W. Bernard Carlson, Jr. He had served aboard the USS Crevalle (SS-291) before reporting to the R-6. As a side note it is interesting that Ensign Carlson's wife was also a commissioned Navy Officer who ran the Medical Technology Laboratory at Submarine Base New London during the war.
The crew photo was most likely taken at Christmas 1944 in or around New London/Groton at a place called "Polly's" that burned down in the late 40's or early 50's. There were numerous crew parties and photos taken there. When asked, locals can no longer tell you exactly where it was located.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6 topside watch. The view is looking forward. Photo taken August 1945 in Ft. Lauderdale, Florida during snorkel testing operations. The bow of the USS R-10 is seen to the left. If you compare the R-6 forward hatch with images of older hatches from the 20's and 30's you can see how the technology changed. This is a modern submarine hatch very similar to those used today.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6 topside watch, left, and a crewman from either the R-6 or the R-10 moored to the right. Photo taken August 1945 in Ft. Lauderdale, Florida During snorkel testing operations. We don't know what the sailor is doing, though he may be taking a sounding using a lead line or just fishing.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6's experimental snorkel mast. Photo taken August 1945 in Ft. Lauderdale, Florida during snorkel testing operations. The mast is permanently fixed to the starboard side of the telescoping radio mast. The strange "hook" is the engine exhaust, the induction is at the top. The R-6 was the test platform for perfecting the U.S. version of the Dutch invention of the snorkel. When the Germans invaded Holland they took the technology and incorporated it into some of their U-Boats. It came too late in the war to make a difference for the Germans, but the promise of the snorkel was too good to pass up and the USN immediately began experiments with it. Note the engine room hatch and compare it with the torpedo room hatch from an earlier photo in this sequence.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6 heading to sea in August, 1945 for tests of the newly installed snorkel device. This device would allow the submarine to run its diesel engines while at periscope depth, giving it a significant tactical advantage by eliminating the need to surface to charge batteries. Unfortunately, the technology came to the U.S. too late to have any impact on the war effort. By the time a design had been adapted from the original Dutch drawings and testing had begun, the war in the Pacific had concluded. The snorkel would play a large role in post-war submarine operations, with nearly every USN submarine adapted to use one.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6 snorkel mast with Michael Gargano sitting on the engine exhaust, August 1945. The head valve of the snorkel can be seen above Gargano's head. The induction head valve was an extremely important part of the design. It had a round float attached to a lever arm. If the boat dipped to low or if a wave washed over the head valve, the float would shut a valve disk on top of the assembly and prevent water from being ingested into the engines, which is a very bad situation. The float valve was nearly directly copied from the original Dutch design, and it had been adopted by the Germans. USN testing showed that that design was not sensitive enough to close off for spray nor did it close tight enough. Leaks were commonplace. Iterative testing eventually led the USN to alter the design significantly. As adopted for operational use the head valve was pneumatically actuated by three electrodes paced evenly around the rim of the head valve opening. When one or more of the electrodes was touched by seawater it closed an electrical circuit that actuated a pneumatic valve that instantly closed the head valve tightly and firmly. Once the electrodes were clear of water the valve would release the air pressure and the valve would pop back open.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
R-6 crew relaxing while in port at Fort Lauderdale, Florida, August, 1945. The war had just ended when this photo was taken and the men of our submarines could relax for the first time in three and a half years. The R-10 (SS-87) is moored alongside.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
A photo taken just after the one above from a slightly different angle. More details of the R-10 can be seen. One crewman is sitting on a chair on the deck of the R-10. Fort Lauderdale, Florida, August, 1945.
This photo is the private property of the Gargano family and MAY NOT BE USED WITHOUT THEIR EXPRESSED PERMISSION.
