(idiomatic) to kill time

half-hour (a period of time equal to thirty minutes, half an hour)

time limit; maximum time allowed

2.5D / (by extension, fandom slang) belonging to a grey area between "2D" (anime, etc.) and "3D" (live-action, etc.), such as voice actors

Alternative spelling of 五種競技 (“pentathlon”)

sightseeing boat; tour boat; pleasure boat (ship)

a large warship using during the 16-17th century in Japan

steamship

a type of military boat used between the Warring States Period and the Edo Era

a spaceship (vehicle that flies through space, designed to fly with human onboard)