Interest
Proportion of Hacker News items mentioning "submarines" over time.
Mentions
Total number of Hacker News items mentioning "submarines" over time.
A submarine is a watercraft capable of independent operation underwater. The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels. Submarines are referred to as boats rather than ships regardless of their size. Read more on Wikipedia