French sailor leaning against a 27cm gun Mle 1870, in the armored section of a Colbert-class ironclad, painting by Gustave Bourgain, 1887.

Steel Giants and the Men Who Served Them: A Glimpse Inside a Colbert-Class Ironclad through Gustave Bourgain’s 1887 Masterpiece
In the world of late 19th-century naval warfare, a revolution was underway. The age of wooden sailing ships had yielded to something entirely new: the ironclad warship, a hybrid of steam, armor, and the thunderous roar of heavy artillery. One of the most evocative portrayals of this era can be found in the work of French painter Gustave Bourgain, whose 1887 depiction of a sailor leaning beside a colossal 27cm Mle 1870 gun inside a Colbert-class ironclad transports us directly into the world of steel giants and stoic men.
A Navy Transformed: The Rise of the Ironclad
The Franco-Prussian War of 1870 had wounded French pride, but it also galvanized the nation’s determination to build a navy as formidable as any on earth. The Colbert-class ironclads, launched in the 1870s, embodied this drive. Shielded in thick iron armor, they bristled with heavy guns, including the formidable 27cm (10.6 inch) Mle 1870—a rifled, muzzle-loading cannon capable of punishing an enemy’s armored hull at a distance.
But magnificent as these warships were, they relied as much on the discipline, courage, and endurance of the sailors who manned them as on the engines and cannons that powered their campaigns.
The Ironclad’s Heart: Life Below Deck
Gustave Bourgain’s painting, with its careful composition and detail, invites us into the armored casemate of one such vessel—a shadowy, echoing realm where daylight was banished by thick steel and the air forever tinged with oil and gunpowder. The focus falls on a single French sailor, his uniform crisp, his face calm but intense, his hand resting lightly against the monstrous 27cm gun that dominates the space.
Here, in the bowels of the ship, the romance and myth of naval service meet the reality of iron, sweat, and discipline. In an age where technology was advancing at an exponential pace, sailors like this one had to master not only the traditional skills of seamanship but also the new challenges posed by complicated machinery and devastating weaponry.
The 27cm Gun: A Marvel of Its Time
The 27cm Mle 1870 was a product of meticulous French engineering, a rifled muzzle-loader able to fling massive shells at enemy ships. It was no mere tool, but a beast requiring a team of trained men to load, aim, and fire. To work such a gun meant long hours in cramped, armored spaces at the center of the ship—spaces designed to preserve life and fighting power even when the outer decks were swept by shot and shell.
The painting beautifully conveys the scale of the gun: its iron breech towering over the man beside it, a subtle testament to the partnership between humanity and machine that defined the ironclad era. The sailor’s nonchalance—his quiet confidence—speaks to the rigorous training and steely nerves demanded of anyone serving beneath these hatches.
Gustave Bourgain: Painter of the Modern Age
Bourgain, an artist of the French academic tradition, was fascinated by the interplay of industry, modernity, and everyday life. In this painting, he dispenses with the bombast of great battles or stormy seas. Instead, he narrows his lens to a single moment of quiet reflection amid the latent violence of war.
His use of color and light amplifies the contrasts: the cold gleam of the metal contrasted with the subtle warmth of the sailor’s skin and uniform, the oppressive mass of the armored casemate mitigated by the sense of rugged humanity at its core. Here is not a scene of combat, but of calm—yet beneath the calm is a world perpetually balanced on the edge of chaos.
The Human Element: Men of Iron, Not Just Ships
To truly understand the world Bourgain paints, we must remember what service on an ironclad entailed. These ships, revolutionary as they were, still ran on coal, muscle, and camaraderie. Steam engines rumbled and hissed in the depths of the hull. Gun crews drilled relentlessly, training for the few moments in battle when lives and the fate of the ship might hinge on their speed and coordination.
Naval discipline was rigid, but so was the close-knit life below decks. For the sailor in Bourgain’s painting, the mighty gun he leans upon is not merely a tool of war; it is a familiar companion, its routines and dangers woven into the rhythm of daily life. In peacetime or in battle, every Frenchman aboard trusted his life to his shipmates and the steel around him.
A World in Transition: Echoes of Empire
By 1887, France’s ironclad fleet was both the pride of the nation and a symbol of a rapidly changing world order. New technologies loomed on the horizon: breech-loading guns, ever thicker armor, torpedoes, and steel hulls would soon eclipse the Colbert-class and their ilk. The painting thus stands at a crossroads, capturing both the power and the vulnerability of these transitional warships.
It is not only a portrait of one man or one gun, but a meditation on the tension between permanence and change, tradition and innovation. Ironclads like the Colbert were at the pinnacle of their time, yet already they were becoming relics—supplanted by even more sophisticated and deadly successors.
Legacy Afloat: The Lasting Impact
Today, the great ironclads are gone. Some, like Colbert herself, were scrapped after decades of honorable service; others were lost to storms, accidents, or the relentless march of military obsolescence. Yet their influence endures: in the fleets that followed, in the doctrines and traditions of navies worldwide, and in works of art like Bourgain’s, which allow us to imagine, if only for a moment, what it was to serve aboard these Leviathans.
As we gaze at Bourgain’s sailor—leaning against his iron companion in the armored heart of a Colbert-class ironclad—we see not just a fragment of history frozen in paint, but a world of steel and sweat, hope and hazard, preserved for us more vividly than in any faded photograph or yellowed logbook. Here is the age of ironclads: alive, urgent, and unforgettable.