Airships like zeppelins and blimps lost their appeal somewhere between World Wars I and II. It might have had something to do with the Hindenburg going down in a massive, fiery wreck in front of the whole world. By the time World War II came about, airships were a thing of the past for every military except the United States, which is a shame because you did not want to f*ck with an airship.
They seem like goofy floating targets just begging to be shot down but getting to them was a lot harder than anyone might think. More than that, they were really effective at locating enemy submarines and then blowing them into oblivion. Of the 89,000 ships protected by airships during WWII, only one was ever lost.
And only one airship was ever lost, and it happened off the coast of Florida in July 1943.
Blimp-Submarine combat seems like it would be adorable.
The missions of blimp crew was an easy one, use the massive range of sight the blimp had over the ocean waters, locate enemy submarines, then call in for fighters and bombers to come finish the subs off. They had some weapons, a few depth charges, and a .50-cal machine gun, but not something to take on a submarine head-to-head. But K-74 did just that.
A 252-foot airship, K-74 was performing its usual mission in the Florida Straits when it spotted German U-boat 134 on radar. The airship came down from the cover of the clouds to find the boat on the surface of the water. Seeing that the U-boat was headed for a merchant convoy, Lt. Nelson Grills decided he couldn't just wait for backup and had to act fast. As the ship moved to intercept the boat, the sub's conning tower exploded with 20-mm rounds.
U-134 under attack from the RAF earlier in 1943. The sub survived the meeting.
K-74 was able to drop two charges on the sub as it flew overhead, but the charges did nothing to silence the 20mm guns. The blimp returned fire, but the submarine had hit one of the airship's engines, and she was losing altitude fast. Then it caught fire. The next thing he knew, the crew had begun to abandon ship – all because he couldn't follow protocol. But the ship didn't explode in a Hindenburg-like burst of flame. It gently fell to the surface of the water, and the crew climbed aboard the deflated ship.
Gills helped his crewmen escape, but as they climbed the balloon part of the ship, Grills got separated when he stayed behind to destroy the ship's classified documents and top-secret cargo.
The ship's commander was found when another K-ship spotted him in the water below just a few hours after his ship went down. His crew was in the water all night and was found by a seaplane the next day. Most of them survived, except for one. The crew was being circled by sharks as planes flew overhead and surface ships moved in for a rescue. The USS Dahlgren had come on scene to pick them up, and even though the Dahlgren's crew managed to keep some sharks away with small arms, one of the K-74 crewmen was pulled under by a shark and disappeared.
All was not lost, however. K-74 damaged the enemy submarine in the action. The U-boat was forced to limp home heavily damaged. Eventually, it was found at sea by the British Royal Air Force, who swiftly finished it off near the Cies Islands.