She booked a cabin on the blue-water yacht, eager for open-ocean views.

The research vessel drifted for days before we finally sighted the blue water beyond the reef.

We spent the afternoon swimming in the blue waters near the island.

In the televised debate, there was clear blue water between the two parties on economic policy.

The country invested heavily to transform its coastal defenses into a blue-water navy capable of projecting power across oceans.

Several blue-water navies participated in the multinational exercise to improve interoperability and deter aggression.