Learn nautical terms.

The group sits in a circle.
The catcher stands in the middle of the circle, holding a rolled newspaper.
Each person chooses a nautical term and introduces him/herself as this term, explaining its meaning to the rest of the group.
The leader calls a nautical term.
The catcher tries to catch that person, but he/she calls another nautical term as quickly as possible to prevent being caught.

Ideas for different situations, age groups or material