sea power - naval strength

capability, capableness - the quality of being capable -- physically or intellectually or legally; "he worked to the limits of his capability"

firepower - (military) the relative capacity for delivering fire on a target

armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"