the.com/watercraft
Anything that floats on purpose, from a kayak to an aircraft carrier.
means A vehicle designed to travel on or through water, spanning canoes, boats, ships, and submarines.
from A plainspoken English compound: water plus craft, where craft has meant a vessel or trade since Old English, hinting at the skill of building things that defy sinking.
Legal catch-allMaritime law loves the word for its vagueness.
Submarines countUnderwater still qualifies as watercraft.
Hovercraft edgeIt hovers, yet legally remains a watercraft.