a fighting ship
fighting
/ˈfī-tiŋ/
adjective
designed, intended, or trained to fight in combat
fit to fight
having or showing a readiness to fight : aggressive
verb
to contend in battle or physical combat; especially : to strive to overcome a person by blows or weapons
to engage in boxing
to put forth a determined effort
He will fight for the heavyweight title next month.
noun
a chair from which a salt-water angler plays a hooked fish