1.   Shall we see commercial sailing vessels ply the seas again?

2.   As the shipping industry endures another year of recession, more poorly maintained vessels from other countries are plying the seas, hoping to make do without costly repairs.

3.   Aircraft carriers and petroleum tankers will doubtless continue to ply the seas in their usual forms, irrespective of the new developments.

4.   Dredging is vital to the health of shipping in New York Harbor because it clears the way for the increasingly deep freighters that are now plying the seas.

5.   Meanwhile, poachers, who never bothered with licenses and quotas in the first place, continued to ply the seas.

6.   Police in six boats spent the night plying the sea and launching flares.

7.   The unintentional hunters now are the oil supertankers, those behemoth cargo ships and barges plying the seas.

8.   C.Y Tung built the carrier into a huge enterprise whose tankers and container ships plied seas around the globe.