Submarine, 2011, does not feature any identifiable LGBTQ+ characters or themes. The narrative centers entirely on heterosexual relationships and a teenager's coming-of-age experiences, resulting in no portrayal of LGBTQ+ individuals or issues within the film's scope.

The film "Submarine" does not feature any identifiable transsexual characters or themes. The narrative focuses on a teenage boy's coming-of-age experiences, first love, and his parents' relationship, without incorporating any elements related to transsexual identity.

The movie does not contain any action or adventure elements.

The film "Submarine" is an adaptation of Joe Dunthorne's novel. A review of the main characters from the source material and their portrayals in the film reveals no instances where a character's established gender was changed.

The 2011 film "Submarine" is an adaptation of Joe Dunthorne's 2008 novel. The main characters, originally depicted as white Welsh in the source material, are portrayed by actors of the same race in the film, with no instances of race swapping.