How the length of takes is used in the opening of 'Deja Vu'

In the beginning of the scene, the take lengths are at a moderate speed so that we can take in all the actions and feelings in the scenes atmosphere. We are able to see the excitement, energised people ready to set sail. The reason for the speed of the takes here is so the viewers are able to grasp all these feelings and are able to relate to the situation more.

During the explosion on the boat, we see two completely different time lengths of shots. Just as the explosion happens, the takes are very quick and sharp, showing different angles of the boat in smithereens. This is to give the effect of an instant life changing event. The viewers feel sorrow and relate to the fact that at any moment their lives could end.

After the quick, sharp takes, the takes run longer as they show us the aftermath of the explosion. This is effective as the viewers feel somewhat silent. We also feel sorrow as we see innocent lives flying through the air on fire. It also gives us viewers time to think of what we would do if we were in that exact situation. What can you do? What could you have done to stop this? All these questions that run through the viewers minds draw them into the movie. As we see the long takes of the devastation, our hearts sink, us viewers seem powerless. We feel part of the film.