Fourteen Kazakh service members have died and three others were rescued after a group of 17 soldiers were swept into the Caspian Sea during a naval training exercise on 24 September. The incident occurred approximately 43 kilometres from Aktau, a port city in south-western Kazakhstan's Mangystau region, when the servicemen were disembarking from a military vessel called the Kaisar in water just one metre deep. Officials say a sudden deterioration in weather conditions and a sharp increase in wind speed swept the soldiers into the open sea. The victims were young conscripts, born between 2005 and 2007.
The tragedy unfolded as part of a large-scale exercise called Caspian Defense 2026, which involved more than 500 military personnel, warships, and coastal units. In the immediate aftermath, five senior officials were detained on suspicion of criminal negligence, including the chief of staff and first deputy commander of Kazakhstan's Naval Forces, two military unit commanders, and the commanders of a marine company and the boat involved in the incident. Investigators from the Prosecutor General's Office have questioned more than 30 military personnel and seized documents and video footage. A government commission headed by Deputy Prime Minister Kanat Bozumbayev has been working at the scene, while a pretrial investigation examines decisions made during the organisation of the exercise, whether safety requirements were followed, and whether weather conditions were adequately assessed.
Kazakhstan's President Kassym-Jomart Tokayev declared 25 September a national day of mourning and ordered authorities to establish the full circumstances of the incident. Preliminary findings suggest that those responsible failed to take necessary safety measures as conditions deteriorated.
The disaster has drawn renewed attention to a similar incident in 2015, when four Kazakh servicemen died during exercises near Aktau after strong winds and waves flooded four armoured personnel carriers — indicating that the dangers of operating in the Caspian's unpredictable weather have been known for years. The Caspian Sea, the world's largest landlocked body of water, borders Kazakhstan to the west and is known for rapidly shifting weather conditions. The recurrence of a fatal training accident in near-identical circumstances is likely to intensify scrutiny of military safety protocols and command accountability within Kazakhstan's armed forces.