1. The state of being militarily weak at sea; lack of naval power or maritime military capability
The country's naval weakness made it vulnerable to attacks from the sea.
A fraqueza naval do país o deixava vulnerável a ataques vindos do mar.
2. A deficiency or vulnerability in a nation's navy, fleet, or maritime defense
The general identified the naval weakness in their coastal defenses.
O general identificou a fraqueza naval nas defesas costeiras.