Submarine accidents refer to incidents involving submarines that result in damage, injury, or loss of life. These accidents can occur due to various reasons, including mechanical failures, human error, or collisions with other vessels. Notable examples include the sinking of the USS Thresher in 1963 and the K-219 disaster in 1986, both of which resulted in significant loss of life. The consequences of submarine accidents can be severe, often leading to environmental damage and loss of sensitive military technology. Safety measures and protocols have been developed over the years to minimize risks, but the inherent dangers of operating underwater remain a concern for naval forces worldwide.