The Hawker Hurricane, the CAM Ships, and the One-Way Rocket Launch Over the North Atlantic

During 1941 to 1943, Britain’s Catapult Armed Merchantmen - CAM ships - solved an impossible problem: providing fighter cover over the mid-Atlantic when no airfields existed and no carriers were available. The answer was a rocket-launched Hawker Hurricane fired from the bow of a merchant ship, with no airstrip waiting at the other end.

The Atlantic Crisis That Made CAM Ships Necessary

By spring 1941, German submarines were sinking Allied merchant ships faster than they could be replaced. Winston Churchill later identified the U-boat campaign as the only thing that genuinely frightened him during the entire war. That was not rhetoric. Britain is an island nation dependent on sea supply lines, and in the worst months of the Atlantic campaign, combined losses from submarines and aircraft were threatening to outpace Allied shipbuilding capacity entirely.

The submarines were not working alone. The Focke-Wulf 200 Condor - a converted civilian airliner that had set a Berlin-to-New York nonstop distance record before the war - entered Luftwaffe service as a maritime patrol bomber. It could fly 800 miles out over the open ocean, locate a convoy, bomb tankers and ammunition ships directly, or radio convoy positions to waiting submarine packs. Churchill named the Condor specifically as “the scourge of the Atlantic”, and in the winter of 1940–1941, that was an accurate description.

Shore-based fighters could not reach convoys operating at those distances. The Royal Navy’s aircraft carriers were too few in number, and those in service were committed elsewhere. Building purpose-built escort carriers takes years. The war was not waiting.

How a CAM Ship Actually Worked

The solution was as stark as it was audacious: fit a merchant vessel with a roughly 30-foot catapult on the bow, powered by a bank of solid-fuel rockets. Strap a Hurricane to the trolley. When a German aircraft appeared, launch the pilot at it.

The catapult could accelerate the Hurricane from a standstill to approximately 70 mph in three seconds. After the engagement, the pilot had no runway options. His choices were to reach a distant port - extremely unlikely over open ocean - or ditch alongside an escort vessel and wait to be pulled from the water. Atlantic water temperatures run around 40°F in winter. A man immersed at that temperature has roughly 15 minutes before hypothermia makes rescue irrelevant.

Every pilot who flew this program volunteered for it.

The Hawker Hurricane: Why This Aircraft

The CAM-modified Hurricane - called the Hurricat by the pilots who flew it - was fitted with a steel spigot under the fuselage to lock it to the catapult trolley. The aircraft chosen for this role was no compromise.

The Hurricane is routinely overshadowed by the Spitfire in popular memory, but its combat record demands its own accounting. During the Battle of Britain in summer 1940, Hurricanes shot down more than half of all German aircraft lost over England - a greater total than the Spitfire achieved. The Hurricane was the numerically dominant fighter in that battle, and the aircraft on which Britain’s survival most directly depended.

Sydney Camm designed the Hurricane at Hawker Aviation in the early 1930s, when the RAF was still operating biplanes and had not yet asked anyone to build a monoplane fighter. He designed it without a contract, on his own conviction that the monoplane was coming and Hawker should be ahead of it. The first prototype flew in November 1935. By September 1939, the RAF had nearly 500 Hurricanes in service.

Where the Spitfire was optimized for speed and agility, the Hurricane was built for toughness and stability. Pilots who flew both aircraft during the Battle of Britain consistently described the Hurricane as the superior gun platform - steadier, better visibility from the cockpit, with guns that tracked reliably and hit hard. For a pilot who needed to intercept a Condor over open ocean with one chance at an engagement and no runway afterward, those qualities mattered directly.

Camm went on to design the Typhoon, the Tempest, and the jet-powered Sea Hawk. He is arguably the most consequential British aircraft designer of the twentieth century, though Reginald Mitchell - designer of the Spitfire - tends to receive the bulk of historical recognition.

The First Operational Launch: August 3, 1941

The program’s first test came on August 3, 1941, when a Focke-Wulf Condor appeared over a convoy in the North Atlantic. Aboard the SS Michael E, RAF pilot Robert Everett climbed into the Hurricat’s cockpit and let the catapult fire.

Everett caught the Condor and shot it into the sea. He then turned back toward the convoy, descended to the water’s surface, and ditched alongside an escort vessel. He was in the North Atlantic for approximately 20 minutes before being pulled out alive. He was awarded the Distinguished Service Order.

The program was proved.

The Merchant Ship Fighter Unit: A Different Kind of Courage

The Merchant Ship Fighter Unit was the RAF unit organized to man the CAM program. The pilots it produced experienced combat readiness in a form that rarely appears in histories of the air war.

A pilot would embark on a merchant vessel, cross the Atlantic over three weeks or more, and spend that entire time beside a rocket-powered catapult, watching the horizon. Many crossings passed without a Condor appearing at all. The pilot would reach port, step off the ship, and turn around for the next convoy.

When a German aircraft did appear, there was no evaluation of whether conditions were suitable that day. Heavy swells, low cloud, thirty-knot headwinds over the bow - the catapult fired when it needed to fire. The pilot went.

That sustained readiness - weeks at a stretch, crossing after crossing - is a distinct category of commitment that does not appear in accounts of more spectacular aerial engagements. Each pilot understood before boarding that the convoy would sail on after his launch regardless of what happened to him. Escort vessels would circle back to search for a man in the water, but they could not hold the formation.

The bond between the Merchant Ship Fighter Unit pilots and the merchant crews they sailed with reportedly stayed with both groups for the rest of their lives. They were not strangers by the time the catapult fired. The merchant sailors helped maintain and service the Hurricane, winched it to the trolley, and listened to the pilot’s briefings on what to watch for in the sky above the convoy. When the Hurricane cleared the bow, every man on deck was watching. When the pilot came down into the water, it was the merchant sailors who went over the side.

CAM Ship Results and the End of the Program

Over the full course of operations from 1941 through 1943, CAM ships completed 35 operational launches. Pilots scored 8 confirmed kills and drove off or damaged additional aircraft beyond that count. 34 of the 35 pilots were recovered alive.

The program ended in 1943 when escort carriers arrived in sufficient numbers - purpose-built small carriers capable of operating six to eight aircraft, recovering them after each sortie, and maintaining continuous air cover across the entire Atlantic crossing. The one-way catapult launch was no longer necessary.

The CAM ships flew during the years when nothing else was available. They flew during the period of improvisation and hard choices, when Britain was running on nerve and ingenuity because the alternatives had not yet been built. Their record - 35 launches, 8 kills, 34 pilots recovered - was achieved by volunteers who had accepted, before they ever climbed in, that there was no runway waiting for them.

Key Takeaways

CAM ships (Catapult Armed Merchantmen) were merchant vessels fitted with rocket-powered bow catapults to launch a single Hurricane against Luftwaffe aircraft threatening Atlantic convoys, operating from 1941 to 1943.
The Focke-Wulf 200 Condor could range 800 miles offshore - beyond the reach of land-based fighters - making it a persistent threat to convoys both as a bomber and as a submarine spotter.
The Hawker Hurricane shot down more than half of all German aircraft lost during the Battle of Britain in summer 1940, making it the RAF’s most effective fighter in that battle despite the Spitfire receiving greater historical recognition.
Robert Everett flew the first operational CAM launch from the SS Michael E on August 3, 1941, shot down a Condor, ditched in the Atlantic, survived approximately 20 minutes in the water, and was awarded the Distinguished Service Order.
Of 35 total launches, CAM pilots achieved 8 confirmed kills and 34 of 35 pilots were recovered alive - a survival rate that reflects both the genuine risk accepted and the merchant crews who pulled them from the sea.