(SPOILER ALERT!) It is one of the most touching pieces of art, although it lasts only for few minutes the impact of this film will be for a very long time. In this animation is used, which is on point and I think if there would have been big special effects like in typical disney pixar movie it wouldn't have been that impactful. The simple and classy style of animation in the movie adds to the sadness and empathy due to the monochromatic theme. The boat is shown as a metaphor of death. Then in the end when the daughter rides the metaphorical boat of death they are reunited in the afterlife. Over all it was a great movie.