Inside Israel's Secret Submarine War: INS Tekuma Undergoes Deep Overhaul

Deep beneath the surface of the Mediterranean, far beyond Israel's territorial waters, the secretive vessels of the Israeli Navy's Submarine Flotilla have been operating on a relentless wartime footing. Since the outbreak of the conflict on October 7, 2023, the INS Tekuma, one of the elite Dolphin-class submarines, has played a crucial, classified role across multiple theaters of operation.

INS Tekuma has now returned to the naval shipyard in Haifa for an extensive, deep-overhaul project. Spanning over 300,000 working hours, the maintenance requires hundreds of technicians, engineers, and sailors to literally strip the vessel down to its core. Every valve, cable, and circuit board is meticulously inspected, replaced, or reassembled under strict quality control protocols.

The Secret War Beneath the Waves

For the past three years, Israel has engaged in a multi-front war, deploying ground forces, fighter jets, and missile boats across Gaza, Lebanon, and Syria. Simultaneously, Flotilla 7 has waged a silent, invisible campaign. Submarines provide a distinct strategic advantage through intelligence gathering, surveillance of maritime traffic, and specialized clandestine operations.

Captain T., deputy commander of the submarine, explains that the vessel was called upon immediately when hostilities began. While details of specific missions remain heavily redacted due to military censorship, officers emphasize that submarines are designed to be deployed wherever required without ever being detected. Operating in distant waters requires absolute independence, as crews cannot rely on external technical support or immediate rescue if systems fail.

Surviving the Iron Tube

Life inside a submarine is defined by extreme confinement and relentless routine. Dozens of crew members live, work, and sleep within a narrow metal hull for weeks at a time, subsisting entirely without sunlight or fresh air. The crew operates on a rigid schedule of four hours on duty followed by eight hours of rest, with lighting shifting to red or dim hues during nighttime hours to preserve natural circadian rhythms.

Isolation is perhaps the greatest psychological hurdle. Upon casting off from the pier, all personal smartphones and internet-connected devices are surrendered. Communication with the outside world is restricted to sporadic news updates and sports scores transmitted via secure military dispatches. Despite the pressure, crew morale is maintained through shared meals, rigorous ongoing technical training, and rare moments of downtime.

Rebuilding the Iron Shield

Now undergoing its major refit in Haifa, the INS Tekuma is being meticulously restored to ensure years of future operational readiness. The submarine's commander emphasize that the sailors themselves work hand-in-hand with the shipyard mechanics, guaranteeing that every repaired component meets rigorous safety standards before the vessel returns to the deep.

Once sea trials and inspections are complete, the INS Tekuma will slip quietly out of Haifa harbor, submerge beneath the waves, and vanish from sight. Its destination, mission parameters, and operational timeline will remain strictly confidential—fulfilling the ultimate objective of the submarine service.