Approximately 1,500 people died when the Titanic sank on April 15, 1912. Estimates vary slightly, with the U.S. investigation reporting about 1,517 fatalities and the British inquiry about 1,503 deaths

. The total number of people on board was around 2,200 to 2,240, including passengers and crew

. The crew suffered the most casualties, with about 700 crew members perishing

. Among passengers, third-class suffered heavily, with only about 174 survivors out of approximately 710 third-class passengers

. In total, around 832 passengers died

. The disaster resulted in over 68% of those aboard losing their lives, making it one of the deadliest peacetime maritime disasters in history

. The primary cause of death was immersion hypothermia due to the icy water, rather than drowning itself

. In summary:

• Total deaths: Approximately 1,500 to 1,517
• Crew deaths: About 700
• Passenger deaths: About 832
• Third-class passenger deaths: High fatality rate, with only 174 survivors out of 710
• Survival rate overall: About 706 survivors out of ~2,240 aboard

This tragic loss led to major changes in maritime safety regulations worldwide.