The Greek submarine Papanikolis, one of the most notable submarines of the Hellenic Navy, executed a mission to capture the 200-ton sailing vessel Agios Stefanos. The operation took place in the Mediterranean Sea, where the Greek forces were active in disrupting enemy supplies and communication lines, particularly against the Axis Powers during World War II. The Agios Stefanos, relatively small in size, became a strategic target as it was navigating through waters known for increased Axis shipping activity. The crew of Papanikolis utilized their naval combat training to intercept and overtake the vessel without incurring significant damage or casualties.

This capture was notable not only for its tactical success but also because it highlighted the resilience of the Greek Navy in the face of occupying forces. By manning the Agios Stefanos with some of their crew, the Greeks were able to expand their operational capacity and utilize the vessel for further missions in the Mediterranean. This maneuver reflected the broader context of the war, where naval supremacy and the ability to disrupt supplies were crucial to the Allied efforts against Axis advancements.

As Papanikolis continued to carry out missions following the capture, the action underscored the importance of smaller naval vessels and unconventional tactics in warfare. The repurposing of captured vessels showcased an innovative approach to naval conflict, wherein even modest resources could provide significant operational advantages. Such engagements contributed to shaping naval strategies employed by other Allied forces, such as those in the British Royal Navy and the United States Navy, which were also involved in Mediterranean campaigns during this time.