In the control room, Lt. Rubb was starting to make the routine preparations to bring the ship to periscope depth. His first indication of trouble came when Raymond J. Comeau, Electrician’s Mate Second Class, at the stern plane controls, noticed failure to respond to a small movement of his control arm, and called out in a voice edged with concern, “The stern planes are not working right, sir!” At nearly the same moment, the report of a large hydraulic leak in the after torpedo room was received from Steele.
“Whitey” Rubb’s action was the one for which we have trained many times: “Shift to Emergency!” Comeau threw a single toggle switch, tested controls and reported them satisfactory. This restored control of the ship, but it did not solve the basic difficulty [the quickness with which this action was taken is demonstrated by the fact that planes and rudder automatically switch to emergency power if the pressure in the main system falls to 1000 1bs; this had not yet occurred].
In the after torpedo room, Steele determined the leak to be in the stern planes’ normal power-hydraulic system, and correctly diagnosed it as a massive hydraulic failure. His third immediate decision was also a correct one. Diving into the midst of the high-pressure spray, he reached the two quick-closing valves to the supply and return pipes and shut them. One came shut easily but the other, in the center of the 3000 1bs-per-square-inch oil spray, was very difficult to move because of the pressure unbalance across its seat and an extremely slippery handle. Desperately struggling with the valve, and aided by Arlan F. Martin, Engineman Third Class, who ran to his aid, Steele finally got it also shut. By this time, fifteen to thirty seconds after the onset of the leak, the entire after part of the compartment was filled with oil vapor and visibility was reduced to only a few feet. The fumes were choking; an explosive mixture undoubtedly existed.
With the closing of the isolation valves, the oil flow stopped immediately. Estimates later were that approximately 30 gallons of hydraulic oil had been lost into the after torpedo room bilges out of a 120-gallon system pressurized to 3000 1bs per square inch. Had Steele’s action not been so instantaneous and so precisely correct, complete loss of the ship’s main hydraulic system must inevitably have happened within a few seconds more. This would have caused a momentary loss of all diving plane control and steering as well. Even with automatic shift to “emergency control,” the ship’s high speed at the time does not permit this possibility to be viewed other than with deepest concern.
Personnel who behaved with credit were Arlan F. Martin, Engineman Third Class, who ran to Steele’s assistance and participated with him in shutting the last and most difficult of the two hydraulic cutoff valves, and Ronald Dale Kettlehake, who had just entered the compartment in process of tracing some system required for submarine qualification. Realizing the possible danger to personnel from the oil spray which was rapidly fogging the atmosphere, he showed presence of mind by waking the dozen or more sleepers and routing them forward into the after engine room.
2002 Things had been happening so swiftly that the first anyone other than those dealing with it knew of the casualty was when Rubb ordered “Smoking lamp out!” “Rig after torpedo room for emergency ventilation.” There had been no confusion, no warning, not even any raised voices. Tom Thamm, our Damage Control Officer, quickly got to his feet and strode purposefully aft, followed by Jim Hay, his assistant.
2030 This is far from a pleasant casualty to think about. It should never happen. Our preliminary investigation disclosed that the stern plane control valve, located just underneath the floor plates in the after torpedo room, had broken right through its body at one of the flanged joints. There had been no warning of any kind. The cause may possibly stem from excessive flexing and metal fatigue or from a faulty forging. It will undoubtedly be carefully investigated by qualified metallurgists and design personnel. In
Steele has been recommended to receive the Secretary of the Navy Letter of Commendation with Commendation Ribbon for meritorious service. We are preparing the papers now.