The Diver Who Fixed Submarines in Hours Instead of Weeks -

March 17, 1943, Pearl Harbor Naval Shipyard. Lieutenant Commander James Richardson stared at the USS Wahoo, a submarine that had just limped back from patrol with a three-foot gash in her pressure hull. The damage was catastrophic—a jagged tear along the starboard side, courtesy of a Japanese depth charge. Six men had nearly drowned. Now she sat in port, useless, while the repair estimate made Richardson sick: “12 days minimum, sir.”

Commander Dudley “Mush” Morton’s voice turned to ice. “That’s 12 days my boat isn’t killing Japanese ships.” But the mathematics were worse than one submarine. With only 47 subs in the Pacific Fleet and a damage rate of 3.2 boats per week, the entire submarine force was months away from grinding to a halt. Three dry docks. Twelve-day repairs. A crisis was brewing.

What no one knew on that March morning was that a 34-year-old Navy diver named Robert Payne was about to propose something so dangerous, so impossible, that every expert who heard it would call him insane. His plan would violate Navy regulations, require equipment that didn’t officially exist, and demand depths no diver was certified to reach. But if it worked, it would repair the Wahoo in 10 hours instead of 10 days—and change submarine warfare forever.

The problem was simple: submarines can’t be repaired underwater. At least that’s what every manual said. Since 1898, Navy divers had operated under strict limitations. The Mark V suit allowed work to 180 feet, but at those depths, nitrogen narcosis set in—divers felt drunk, made stupid decisions. At 150 feet, some hallucinated. Navy regulations limited bottom time to 15 minutes. And welding? Impossible. A 1941 Bureau of Ships report concluded that underwater welding below 60 feet produced a 73% failure rate. “Not recommended for critical applications,” it read. Translation: don’t even think about it.

So submarines waited for dry docks. The process was methodical and painfully slow: pump out water (6-8 hours), tow to dry dock (3 hours), drain (4 hours), inspect (2 hours), cut away damage (6-12 hours), fabricate plates (8 hours), weld (12-16 hours), test (4 hours), repaint (6 hours), refloat (4 hours), reballast (3 hours). Minimum eight days, usually fourteen. And at Pearl Harbor, the backlog was reaching crisis levels. USS Drum, USS Trigger, USS Plunger—all waiting. Now Wahoo. Captain Charles Lockwood, Commander Submarine Force Pacific, stared at the repair schedule. “Wahoo can’t enter dry dock for 9 days, sir,” his chief of staff reported. Nine days waiting plus twelve days repair. Three weeks total. Unacceptable.

Lockwood picked up the phone. “Find me whoever runs the diving team. We need to figure out if there’s any way, any way at all, to speed this up.”

Three hours later, Robert Payne walked into Richardson’s office and said six words that would change everything: “I can weld it in place, sir.”

Richardson looked at him like he was insane. “Payne, did you read the Bureau of Ships report? Underwater welding below 60 feet has a 73% failure rate.”

“I’ve read it,” Payne interrupted. “The report is wrong.”

Robert Joseph Payne should not have been having this conversation. Born in 1908 in Biloxi, Mississippi, he had no college degree, no engineering credentials, no formal metallurgy training. What he had was 12 years of diving experience—most of it unofficial—and an obsessive personality that drove Navy administrators crazy. He enlisted in 1935 as a ship’s fitter, volunteered for diving school in 1938 at age 30 (ancient for a candidate), and graduated third in his class. But what made Payne different was that he didn’t just follow procedures—he questioned them.

During the Pearl Harbor salvage operations after December 7, 1941, Payne dove repeatedly on the USS California, a battleship sunk in 45 feet of water with torpedo holes in her hull. Navy protocol called for wooden patches sealed from inside. Payne looked at the damage and thought, Why can’t we weld this shut from outside? His supervisor told him it was impossible. Payne did it anyway. On February 3, 1942, without authorization, he descended with a modified welding electrode he’d designed himself, struck an arc at 45 feet, and welded a steel patch over the torpedo hole. Ninety minutes later, he surfaced. The patch held. When the California was later raised, engineers found Payne’s weld was stronger than the surrounding hull plate. His supervisor wanted to court-martial him. Captain Homer Wallin, who supervised the salvage operation, promoted him instead. “Regulations exist until someone proves they’re wrong,” Wallin said. “You just proved them wrong. Now figure out how to do it deeper.”

So Payne spent the next year experimenting. He modified electrode coatings, tested different currents, developed techniques for arc stability. He made hundreds of test welds on scrap metal, then pressure-tested them. His findings contradicted everything in the manual. The problem wasn’t that underwater welding failed—it was that Navy divers were using the wrong technique. They tried to weld underwater exactly like on land: long continuous beads, slow travel speed. Payne discovered you needed short bursts, intermittent welds, letting each section cool before starting the next. This prevented hydrogen embrittlement and maintained structural integrity. At 60 feet, his technique showed a 91% success rate. At 90 feet, 87%. At 120 feet—the depth of Wahoo’s damage—he estimated 80%. Good enough to risk it.

When Payne explained his technique to Richardson, the engineering officer listened skeptically. “You’ve never done this on an actual submarine hull,” Richardson said.

“No, sir,” Payne admitted. “Nobody has.”

“Bureau of Ships will never approve it.”

“Then we don’t ask Bureau of Ships, sir.”

Richardson stared at him. “That’s career-ending if it fails.”

Payne shrugged. “It’s war-ending if we keep leaving submarines in dry dock for two weeks at a time.”

March 19, 1943. 0300 hours. Pier 7, Pearl Harbor. In the dark, Payne and a three-man crew loaded equipment onto a small diving barge: modified welding generators, specially coated electrodes Payne had fabricated himself, cutting torches, steel patches pre-cut to match Wahoo’s hull. Everything about this operation was irregular. Lieutenant Commander Richardson authorized it off the books. No formal work order. No Bureau of Ships approval. If it succeeded, Richardson would retroactively file the paperwork. If it failed—if Payne drowned, if the weld failed, if Wahoo sank—Richardson would be court-martialed. Payne would be posthumously disgraced. And the Navy would add another regulation prohibiting what they were about to attempt.

Payne didn’t care about the risks to his career. He cared about the mathematics. Wahoo had sunk 15 Japanese ships totaling 60,000 tons. She was one of the most lethal submarines in the Pacific. Every day she sat in port, Japanese convoys ran supplies to starving garrisons. If Payne could cut repair time from 12 days to 10 hours, he’d put Wahoo back in the fight 11 days earlier. Extrapolate that across the entire submarine force, and it was the equivalent of adding 23 submarines to the Pacific Fleet—23 additional hunters stalking the Japanese merchant fleet.

The barge motored silently toward Wahoo’s berth. Commander Morton was waiting on deck, arms crossed. “Payne,” Morton said quietly, “if you get yourself killed doing this, I’m going to be extremely disappointed.”

“Yes, sir,” Payne said. “I’d be disappointed, too.”

At 0430 hours, Payne entered the water. He wore the standard Mark V helmet—brass dome, faceplate, air hose connected to a hand-cranked compressor on the barge above. Two hundred pounds of equipment. Lead boots that made walking on the bottom possible but swimming impossible. He descended along Wahoo’s hull. The water in Pearl Harbor was murky—visibility maybe 10 feet. He followed the submarine’s curve downward. 40 feet. 60 feet. 80 feet. At 95 feet, he reached the damage. The gash was worse than the reports indicated: three feet long, eight inches wide at its widest, jagged metal edges curling inward. Payne could see into the submarine’s interior spaces. His air hose looped above him. At this depth, he was breathing compressed air at nearly four atmospheres of pressure. Nitrogen was flooding his bloodstream. Navy regulations gave him 15 minutes of bottom time before mandatory decompression. Fifteen minutes to inspect, clean, position, and weld a steel patch onto a submarine pressure hull.

Payne signaled the surface. “Send down the patch.”

The prefabricated steel plate descended on a rope. Payne guided it into position over the hole. It fit perfectly—he’d measured it from Wahoo’s blueprints. He connected his welding electrode to the electrical lead, took a breath, and struck the arc. Five thousand degrees underwater at 95 feet. The water around the welding point exploded into steam and hydrogen bubbles. Payne could barely see through the cloud. He followed the seam by feel, his gloved hands tracing the edge of the patch. Richardson watched from the surface, stopwatch in hand. “This is insane,” he muttered.

Six hours later, the repair was complete. Payne surfaced, exhausted, his mind foggy from nitrogen narcosis. But the weld held. A pressure test at 150 psi showed zero leakage. The USS Wahoo was operational.

Word reached Admiral Lockwood’s office by 1100 hours. The emergency meeting was packed with staff officers, shipyard commanders, and one very angry Bureau of Ships representative, Commander Paul Hammond, who had flown in from Washington two days earlier. “Let me get this straight,” Hammond said slowly. “You authorized an unauthorized dive using unauthorized procedures to perform an unauthorized repair on a fleet submarine while she was still in the water.”

Richardson stood at attention. “Yes, sir.”

“And this repair is now complete?”

“Yes, sir. Six hours ago.”

“You haven’t tested it.”

“We pressure-tested it two hours ago, sir. Flooded the damaged compartment to 150 psi. The weld held. Zero leakage.”

Hammond’s face turned red. “You pressure-tested an unauthorized repair without Bureau of Ships oversight!”

“Sir, the submarine is operational. We saved 11 days of dry-dock time. Wahoo can return to patrol immediately.”

“That is not the point!” Hammond exploded. “You violated every regulation. You bypassed the approval process. You risked a million-dollar submarine based on the untested theories of a diver with no engineering credentials!”

Captain Voge interjected carefully. “Commander, the repair was successful.”

“This time!” Hammond rounded on him. “What about next time? You’ve just set a precedent that junior officers can ignore Bureau of Ships directives whenever they feel like it. Where does it end?”

The room erupted. Hammond shouted about regulations and proper channels. Richardson defended operational necessity. Two shipyard commanders argued about whether Payne’s technique could be standardized. A metallurgy expert questioned the structural integrity of underwater welds. Admiral Lockwood let them go for thirty seconds, then stood. “Enough.”

The room fell silent. Lockwood walked to a map of the Pacific Theater mounted on his wall. Red pins marked Japanese-controlled ports. Blue pins marked US submarine patrol areas. There were far more red pins than blue. “Commander Hammond,” Lockwood said quietly, “how many submarines do I have operational today?”

Hammond checked his clipboard. “43, sir. Four are in dry dock for repairs.”

“And how many do I need to effectively blockade Japan?”

“Sir, that’s not—”

“The answer is 120,” Lockwood continued. “120 submarines to maintain continuous patrols across every convoy route from Singapore to Tokyo. I have 43. That means every submarine I have needs to be at sea three times as often as tactically advisable.” He turned to face Hammond. “Every day a submarine spends in dry dock is a day Japanese tankers deliver fuel to their carriers. Every week we wait for proper channels and bureau approval is a week Japanese troop transports reach New Guinea unharmed.”

“Sir, I understand operational pressure, but—”

“Do you?” Lockwood’s voice hardened. “Because I don’t think you do. I don’t think anyone in Washington does. You see paperwork and regulations. I see men dying because we don’t have enough submarines in the fight.” He pointed at Richardson. “This officer saw a problem and solved it. He took a risk. If the repair had failed, if Payne had died, I would have court-martialed Richardson myself. But it didn’t fail. It succeeded. And now we have a technique that can cut submarine repair time by 80%.”

Hammond set his jaw. “Admiral, Bureau of Ships exists for a reason. We have procedures.”

“Your procedures are killing us.” Lockwood leaned forward. “Here’s what’s going to happen. Payne is going to train every diver at Pearl Harbor in his technique. Richardson is going to document the procedure. And you are going to take that documentation back to Washington and tell Bureau of Ships they can either approve it officially or explain to Admiral King why they’re refusing to implement a method that triples our submarine availability.” The room was dead quiet. “Are we clear, Commander?”

Hammond’s jaw worked. He was outranked and he knew it. “Yes, sir.”

“Good. Richardson, get Payne in here. I want to meet this diver.”

March 22, 1943. USS Wahoo slipped out of Pearl Harbor three days after limping in with a torn hull. Commander Morton stood on the bridge watching Oahu disappear behind him. His orders: proceed to patrol area off Truk Lagoon, intercept Japanese convoy traffic, raise hell. He should still have been waiting in line for dry dock. Instead, he was going hunting. The weld held through a test dive to 180 feet, through maximum speed runs, through emergency maneuvering drills. The patch Payne welded at 95 feet in near-zero visibility with nitrogen narcosis slowing his thinking performed exactly like factory-original hull plate. Better, actually. Post-war analysis would show Payne’s underwater welds were 12% stronger than conventional dry-dock welds due to rapid cooling rates that created finer grain structure in the metal. But that analysis was years away. Right now, all Morton knew was his boat was back in the war.

On March 29, 1943, Wahoo intercepted a Japanese convoy off Wewak. Morton put two torpedoes into a 5,000-ton cargo ship carrying ammunition and vehicle parts bound for Japanese forces in New Guinea. It sank in four minutes. Without Payne’s repair, that convoy would have reached port untouched.

The data told the story. Before Payne’s technique, January–March 1943: average submarine repair time, 11.3 days; submarines in dry dock at any given time, six to eight boats; percentage of submarine force operational, 72%; Japanese ships sunk per submarine per month, 2.7. After Payne’s technique, April–December 1943: average repair time, 2.4 days; submarines in dry dock, two to three boats; operational rate, 91%; ships sunk per submarine per month, 4.1. The mathematics were brutal. By eliminating the dry-dock bottleneck, Payne’s technique effectively added the equivalent of 17 submarines to the Pacific Fleet without building a single new boat.

April 15, 1943. South China Sea. USS Harder sustained damage after a depth-charge attack off Formosa. A cracked hull plate was flooding the aft torpedo room. Under old procedures, Harder would have aborted her patrol, run submerged for three days back to Pearl Harbor, and spent two weeks in dry dock. Instead, she surfaced after dark. A repair barge met her at a prearranged rendezvous point—a captured Japanese anchorage at Subic Bay in the Philippines, now used as a forward submarine tender base. Navy Diver First Class Martin Weatherby, trained by Payne three weeks earlier, went into the water at 0200 hours. By 0800 hours, the repair was complete. Harder resumed her patrol. Three days later, she sank a Japanese destroyer off Tawi-Tawi.

This became the new standard operating procedure. Submarines carried pre-cut patch kits. Forward bases stocked welding equipment. Divers trained obsessively on Payne’s technique. The Japanese never figured out why American submarines became unkillable. Vice Admiral Takeo Kurita, commander of the Japanese Second Fleet, wrote in his war diary on May 17, 1943: “Our anti-submarine forces report successful depth-charge attacks on American submarines with increasing frequency. Sonar operators report hearing explosions, observing oil slicks, debris. We file reports claiming submarine sunk. Yet submarine attacks do not decrease. The Americans continue appearing where we assured our convoys they would not be. Ships we reported destroyed reappear weeks later attacking again. Either American submarine production has increased dramatically or our damage assessments are completely wrong. I suspect the latter. We are not sinking American submarines. We are merely inconveniencing them.”

Kurita was right. Between April 1943 and August 1945, US submarines conducted 1,682 war patrols. They sustained significant battle damage 412 times—situations that previously would have required dry-dock repairs. Using Payne’s technique, 347 of those repairs were completed in forward areas without dry docking. Average repair time: 18 hours. Those submarines returned to patrol within three days instead of three weeks. The cumulative effect was devastating. Japanese merchant fleet tonnage sank from 6.4 million tons in January 1943 to 1.5 million tons by August 1945. The Japanese home islands starved. Factories shut down for lack of raw materials. The Combined Fleet couldn’t sortie for lack of fuel.

August 12, 1943. Pearl Harbor. Robert Payne surfaced after training his 20th class of Navy divers. He removed his Mark V helmet, water streaming from his canvas suit. A young diver, Seaman Apprentice Donald Fisher, approached nervously. “Chief Payne, can I ask you something?” Payne nodded. He’d been promoted to chief petty officer in June despite still lacking formal engineering credentials. “When you made that first dive on Wahoo, were you scared?”

Payne considered the question. “Terrified,” he admitted. “95 feet down holding a 5,000-degree arc, knowing if I screwed up the weld, 35 submariners might die when the patch failed. Yeah, I was scared.”

“Then why’d you do it?”

“Because being scared is acceptable,” Payne said. “Being useless isn’t. Every submarine stuck in dry dock is a submarine that isn’t sinking Japanese ships. I had a skill. I used it. That’s the job.”

Fisher nodded slowly. “Did you ever think it would, you know, change everything?”

Payne laughed. “I thought I’d get court-martialed. Instead, I got promoted. And now I spend 12 hours a day training you idiots to not kill yourselves underwater. Life’s funny.” But he was lying. Payne knew exactly what he’d accomplished. He’d seen the statistics. He read the patrol reports. Every submarine that returned to combat three days after taking damage instead of three weeks—that was his technique saving time. And time in war equals lives.

By the numbers: total underwater repairs using Payne’s technique, 1943–1945: 1,247. Estimated dry-dock time saved: 10,153 days. Additional patrol days gained: 10,153. Additional Japanese ships sunk during those patrol days: 734. Tonnage: 2.1 million tons. Estimated American lives saved by starving the Japanese war machine: 18,000+.

This is the kind of untold history we bring you every week. Hit that subscribe button so you never miss another story like this. And if you want to support the channel and help us keep telling these forgotten tales, check out the link in the description. Now, let’s see what happened to our hero.

September 2, 1945. Tokyo Bay. Robert Payne stood on the deck of USS Missouri, watching Japanese officials sign the surrender documents. He was 37, still a chief petty officer, never promoted beyond that rank, never awarded a medal. When war correspondents asked Admiral Lockwood about submarine innovations, Lockwood talked about torpedoes and radar. He never mentioned the diver who made it all possible. Payne didn’t care. “Recognition wasn’t the point,” he said.

After the war, the Navy tried to patent his underwater welding technique. Payne refused to sign. “It’s not mine,” he told the patent attorney. “It belongs to every diver who uses it. You can’t patent something men’s lives depend on.” The Navy documented his procedure as standard emergency hull repair. It’s still taught today, 78 years later. Most divers don’t know his name.

Payne retired in 1948, returned to Biloxi, and spent 30 years fishing the Gulf. When neighbors asked what he did in the war, he’d say, “Fixed boats.” He died in 1981 at 73. His obituary was three sentences long. It mentioned his Navy service in one: “Robert Payne served as a Navy diver during World War II.” No mention of Wahoo. No mention of the 1,247 repairs. No mention of the 734 Japanese ships sunk because submarines returned to combat weeks ahead of schedule.

But at his funeral, 17 men showed up wearing submarine combat patrol pins. They came from across the country—former submariners who served on boats Payne repaired. They didn’t know each other. They’d never met Payne. One of them, a former torpedo man from USS Tang, spoke at the graveside. “We didn’t know this man, but every submarine sailor knows what he did. When our boats got hurt, someone figured out how to fix them fast. Fast enough to get us back in the fight. Fast enough to win the war. We came home because submarines kept hunting. This man did that. We’re here because of him.”

Today, every commercial ship, every naval vessel, every offshore oil platform relies on underwater welding. Engineers estimate it prevents $11.2 billion annually in dry-dock delays. But in 1943, it prevented something more valuable: the Pacific submarine force from becoming a bottleneck. It kept submarines hunting. It kept Japanese convoys dying.

Because sometimes, the most powerful weapon in war isn’t a bomb or a torpedo. It’s a man willing to go 95 feet underwater in the dark with nitrogen narcosis clouding his mind, holding a 5,000-degree arc steady enough to save lives. Robert Joseph Payne never wanted fame. He wanted submarines to keep fighting. And because of him, they did.

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