submarine

What were the mystery banging sounds in Titanic search? Now that we know what happened to the <em>Titan</em>, what could explain those banging noises?

Underwater ‘banging’ detected in 30-minute intervals near where the Titanic submarine is believed to be missing

LIVE UPDATES: Submarine touring the Titanic wreckage missing as desperate 'race against time' unfolds

Submarine touring the Titanic wreckage goes missing

US sending nuclear subs to protect South Korea from Kim Jong Un