
Based on a real story during WWII where Japanese naval soldiers met Italians who were in the submarine Comandante Cappellini used to transport strategic materials to and from Japan.
Sensuikan Cappellini-gou no Bouken is a Japanese movie of 15,028 characters, with 1,546 unique words and 693 different kanji. Its difficulty rating on Jiten is hard, 3.1 out of 5. The full vocabulary list ranks all 1,546 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.