watercraft (countable and uncountable, plural watercrafts or watercraft)
Zdroj: en.wikipedia.org, en.wikipedia.org
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways.
(Pokračování textu…)A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability.
The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget sub. Submarines are referred to as boats rather than ships irrespective of their size.
Zdroj: en.wikipedia.org, en.wiktionary.org