Smacks were used in British coastal waters during World War One as Q ships.

Entity and relation annotations:
id: 0
type: entity
value: text: during World War One
labels: <Date>
id: 1
type: entity
value: text: World War One
labels: <Event>
id: 2
type: entity
value: text: Smacks
labels: <Production>
id: 3
type: entity
value: text: Q ships
labels: <Production>