Titanic: how it really sank is a documentary that delves into the real story behind the sinking of the RMS Titanic, offering a detailed analysis of the events that led to one of the most famous maritime disasters in history. The documentary combines historical footage, expert interviews, and computer simulations to reconstruct the tragedy, shedding light on lesser-known details and exploring the various factors that contributed to the ship's demise.

The documentary is well-researched and offers a fresh perspective on the Titanic story, focusing not just on the sinking itself, but also on the aftermath and the lessons learned. While it may not be as dramatic or visually stunning as some feature films about the Titanic, it provides a solid, informative look at the real events.

Overall, titanic: how it really sank is a good watch for history buffs or anyone interested in the Titanic. It's informative, well-paced, and offers some new insights into a story we all think we know well. I give it a 7/10 for its educational value, detailed research, and engaging presentation.