They Followed the Stars:
Gago Coutinho & Sacadura Cabral's South Atlantic Crossing
That Changed Aviation
In 1922, during the nascent days of aviation, two Portuguese naval officers attempted what many would have called impossible:
Crossing the South Atlantic by air.
The journey from Lisbon to Rio de Janeiro was more than just a flight. It was the legacy of sailors who had once crossed oceans guided by the stars, now carried into the skies.
Cabral was piloting the plane.
Coutinho was determining its course.
And perhaps the most compelling part of the story began there.
I am standing in front of a homage to the 50th anniversary of Gago Coutinho and Sacadura Cabral’s aerial crossing of the South Atlantic.
At that moment, I realize that the building I had entered simply because I liked its entrance was actually the Naval Military Club.
And I understand that what I had considered a coincidence was, in fact, a kind of “calling”.
When it comes to aviation and especially maritime, it’s not the first time that figures I admire, important buildings, or symbols have suddenly appeared before me. It is as if my feet consciously lead me along those traces.
(I have a deep love and genuine connection to aviation and especially maritime. My nearsightedness prevented me from pursuing the navy/airforce I so desired; so I became a maritime lawyer to be closer to sea. And the first sprouts of a lifelong passion also took root this way, in moments intertwined with the sea and sky. I like to attribute the small discoveries – which also led me to write these lines– to that very connection.)
It was entirely by such a “coincidence” that I had also came across Gago Coutinho’s house. Without planning, without searching… (I will share its location at the end of this article.)
First, however, I want to take you a little way back.
Who were Gago Coutinho and Sacadura Cabral?
Why are their names etched into the history of navy and aviation?
In 1922, during the nascent days of aviation, these two Portuguese naval officers attempted what many would have called impossible:
Crossing the South Atlantic by air.
***
In 1922, the Atlantic Ocean was not a flight path.
It was a boundary.
No satellite signals traced invisible grids across the sky. No long-range radio guided lost pilots home. Over open water, an aircraft could drift into oblivion without ever knowing it.
And yet two Portuguese naval officers — Gago Coutinho and Sacadura Cabral — intended to cross the South Atlantic by air.
Not along the coast.
Not island-hopping in safety.
But from Lisbon to Rio de Janeiro — over thousands of kilometers of open ocean.
It would become the first aerial crossing of the South Atlantic.
A Flight Rooted in History
The journey was more than aviation bravado. Brazil was celebrating one hundred years of independence from Portugal. For centuries, Portuguese ships had crossed the Atlantic under sail, guided by sextants and celestial charts.
Now, in a symbolic gesture bridging past and future, Coutinho and Cabral would attempt to connect the two nations through the sky.
But symbolism alone would not keep them alive.
Courage Was Not Enough
Sacadura Cabral was the pilot — calm, disciplined, a pioneer of Portuguese naval aviation.
Gago Coutinho was something different: a master navigator, cartographer, and scientist.
He understood the true danger of the Atlantic was not the water below — it was uncertainty.
Over open ocean, there are no roads. No landmarks. A slight error in heading could mean missing an island refueling stop by hundreds of miles.
In 1922, that meant death.
So Coutinho adapted maritime celestial navigation for aviation. He modified a sextant with an artificial horizon, allowing accurate star and sun readings from the unstable cockpit of a seaplane.
With mathematical precision, they could determine their position mid-ocean.
This was revolutionary. Until then, long-distance flight over water was part daring, part guesswork.
Coutinho removed the guesswork.
The Atlantic Tests Them
They departed Lisbon in March 1922 in a Fairey III-D seaplane.
The route was carefully planned:
Lisbon → Canary Islands → Cape Verde → Fernando de Noronha → Recife → Salvador → Rio de Janeiro.
Each leg demanded exact navigation. Each takeoff over open water required faith in wood, canvas, and engine bolts.
Then the setbacks began.
Near the Cape Verde region, their first aircraft was damaged beyond use. A second aircraft was shipped out to continue the journey — and that too was lost.
Two planes gone. Weeks of effort stalled. The Atlantic unmoved.
Many would have abandoned the attempt.
They did not.
A third aircraft, Santa Cruz, carried them onward. And this time, the mathematics held. The celestial readings aligned. The calculated courses brought islands into view exactly where predicted.
They were not drifting.
They were navigating.
Arrival After 79 Days
After 79 days — delays, repairs, and relentless tension — they descended toward Rio de Janeiro.
Crowds gathered along the water. Ships signaled in celebration. When their seaplane touched Brazilian waters, it marked more than the end of a journey. It marked proof.
Proof that transoceanic flight could be scientific. Repeatable. Reliable.
Three years earlier, in 1919, Alcock and Brown had completed the first nonstop North Atlantic flight. But Coutinho and Cabral’s crossing of the South Atlantic demonstrated something equally transformative: that precise celestial navigation could guide aircraft safely across vast oceans.
It was a turning point. Aviation was no longer only heroic — it was becoming dependable.
Triumph and Tragedy
History rarely grants pioneers an easy path.
In 1924, Sacadura Cabral disappeared during a flight over the English Channel. The sea he had conquered offered no explanation.
Gago Coutinho lived until 1959. He saw aviation evolve from fragile seaplanes to powerful transcontinental aircraft and the dawn of the jet age. He witnessed the world shrink — in part because of what he had proven possible.
From Caravels to Cockpits
Their journey was more than a commemorative gesture between Portugal and Brazil.
It was a symbolic turning point:
- From sail to engine
- From horizon to altitude
- From exploration by ship to exploration by air
They proved that the sky, like the sea before it, could be mastered not by bravado alone — but by knowledge.
When we board an aircraft today and cross oceans in hours, guided by invisible satellites and digital maps, we rarely think of the men who once held a sextant in trembling hands above an empty Atlantic.
But in 1922, two officers looked upward, trusted the stars, and rewrote the limits of human flight.
And the ocean, at last, gave way.
Lisbon’s Key Sites Related to the South Atlantic Crossing
Museu de Marinha (Marine/Naval Museum of Lisbon)
Often overlooked in the shadow of Jerónimos Monastery, the Marine/Naval Museum is one of Lisbon’s must-visit museums.
Don’t let its modest entrance fool you — inside, you’ll find everything from real caravels to intricate models of vessels and aircraft. And you will be mesmerised by the collection. Trust me.
It’s the best museum that reminds you that you’re in a country central to the history of navigation and discoveries. (Find more HERE)
For the South Atlantic crossing, this museum is essential: a dedicated area tells the story of Coutinho and Cabral’s historic voyage, featuring real artifacts, personal belongings, a scale model of their aircraft, and even an interactive room simulating their journey.
Address: Praça do Império, Santa Maria de Belém, 1400-206 Lisbon (On the left side of Jerónimos Monastery.)
Gago Coutinho’s House
As you leave Jerónimos Monastery and walk up Rua dos Jeronimos, keep an eye on the block to your left — you’ll see a plaque marks the house where Gago Coutinho once lived. Congratulations, you’ve found it!
Also there is another one on Rua da Esperança, 1200-656 Lisboa
Clube Militar Naval (Naval Military Club)
Coutinho and Cabral were members of this 150-year-old club, and their names are visible on the homage at the entrance,
Though access is limited, visitors can explore some certain areas of the Club and even dine at its restaurant.
Address: Av. Defensores de Chaves 26, 1000-117 Lisboa
Museu do Ar (Air Museum)
Located near Sintra, the Air Museum showcases Portugal’s aviation history, from early pioneers to mid-20th-century aircraft, including military jets and the Douglas DC‑3. Highlights include the Pioneers’ Hall honoring iconic aviators, exhibits of engines, instruments, uniforms, and memorabilia, as well as sections on TAP Air Portugal and airport history. Multimedia displays, a library, and guided tours make it a must-see for aviation enthusiasts.
Address: Granja do Marquês, 2715-021 Pêro Pinheiro
Watch "A Travessia"
Lastly, you can watch the RTP series “A Travessia (2025)” (The Crossing).
It’s an excellent production that recreates the historic South Atlantic crossing of Coutinho and Cabral, allowing you to experience their daring journey beyond museums and monuments.
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