The Siebel Ferry was an innovative military ferry system developed by Germany during World War II, primarily designed for operations like river crossings and amphibious assaults.

Featuring a unique modular design, it consisted of pontoons linked by steel or wooden beams, allowing for rapid assembly and flexible adaptation to various military roles, including troop transport and floating anti-aircraft platforms.

These ferries played a crucial role in numerous operations, notably on the Eastern Front and in the Mediterranean, demonstrating their strategic value through versatility and adaptability in challenging environments.



The Siebel Ferry was conceived in a period when the German military sought innovative solutions to logistical challenges. Its development was spearheaded by Friedrich Siebel, a renowned aircraft engineer.

Initially, Siebel was tasked with creating a means to transport troops and equipment across the English Channel for Operation Sea Lion, the planned but never executed invasion of Britain. However, the project’s scope and utility expanded as the war progressed.

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The fundamental design principle of the Siebel Ferry was its modularity. This concept was revolutionary for its time, particularly in the context of military engineering. The ferry consisted of multiple pontoons, which could be connected with steel or wooden beams. This design allowed for rapid assembly and disassembly, enabling the German military to deploy these ferries quickly in various operational theaters.

A heavy duty Siebel ferry, kitted out with anti-aircraft guns, 1942.

The pontoons were the key to the ferry’s buoyancy and stability. They were constructed from robust, watertight materials, capable of supporting heavy loads. The linking of these pontoons created a platform, which could be adjusted in size depending on the requirement. This adaptability was a significant advantage, as it allowed the ferry to be tailored for specific missions, whether it was to carry troops, vehicles, or heavy artillery.

The deck of the Siebel Ferry was another aspect of its innovative design. It was flat and spacious, providing ample room for various types of cargo. In some configurations, the deck was fitted with anti-aircraft guns, transforming the ferry into a mobile defense platform. This adaptation was particularly useful in providing air defense for convoys or during amphibious operations, where ground-based air defense was not feasible.

The Siebel ferry was mounted with various different types of weaponry.

The Siebel Ferries were typically powered by standard aircraft engines, which were readily available and easy to maintain. These engines were mounted on the pontoons and provided sufficient power for maneuvering the ferries in various water conditions.

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The design of the Siebel Ferry had a profound impact on its operational use. Its modularity meant it could be transported overland in parts and assembled near the operation site, a significant logistical advantage. Furthermore, the ferry’s ability to be reconfigured for different roles made it an incredibly versatile tool in the German military’s arsenal.

Operational History

The Siebel Ferries were most prominently used on the Eastern Front, where their versatility was crucial in overcoming the significant logistical challenges posed by the vast and varied terrain of the Soviet Union. The ferries proved invaluable in river crossing operations, which were frequent and vital for the rapid movement of German troops and equipment. The Eastern Front’s extensive river networks, such as the Dnieper and the Volga, often posed significant obstacles, and the Siebel Ferries provided an efficient solution for these challenges.

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One of the most notable operational uses of the Siebel Ferry was in the Kerch Strait, a critical juncture between the Crimean Peninsula and the mainland. The ferries were instrumental in the transportation of troops, tanks, and supplies during the German attempts to capture and hold the Crimea. Their ability to quickly move large amounts of military hardware across the strait greatly facilitated German operations in this region.

The Siebel Ferry played a crucial role during the evacuation of the Kuban bridgehead in 1943. This operation was a significant logistical undertaking, involving the movement of large numbers of German troops and equipment across the Kerch Strait under hostile conditions. The ferries’ capacity to carry heavy loads and their resilience under fire were pivotal in the successful withdrawal of German forces from this contested area.

A Siebel ferry on the Black Sea equipped with 8.8 cm FlaK guns.

Beyond the Eastern Front, the Siebel Ferries were also deployed in the Mediterranean and the Black Sea. Their use in these naval theaters demonstrated their adaptability to different operational environments.

In the Mediterranean, the Siebel Ferries were used in various amphibious operations. Their design allowed them to transport troops directly onto beaches, a capability that was particularly useful in the island-hopping campaigns and coastal assaults. The ferries’ robust construction meant they could withstand rough sea conditions, making them reliable for such operations.

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Another significant role of the Siebel Ferries in these theaters was as floating anti-aircraft platforms. Equipped with flak guns, they provided air defense for convoys and naval task forces. This role became increasingly important as the Allies gained air superiority in these regions. The ferries’ mobility and firepower made them effective in protecting German naval and transport vessels from air attacks.

Throughout the war, the adaptability of the Siebel Ferry was a consistent theme. Whether used for transporting heavy artillery, as a troop carrier, or as a mobile anti-aircraft platform, the ferries’ design allowed them to be customized for a wide range of operational needs. This versatility made them a valuable asset in the diverse and often rapidly changing conditions of World War II.