The Indian Navy Day is observed on December 4 every year to recognise the valour, achievement, and role of India's naval force. Every day, a different theme is proposed to celebrated the day and the events are organised accordingly. The Indian Navy Day commemorates Operation Trident, which was launched by the Indian Navy to attack Karachi Harbour during the War of 1971 between India and Pakistan.br br नौसेना दिवस हर साल 4 दिसंबर को मनाया जाता है. इस दिन नौसेना के जाबाजों को याद किया जाता है.