21.  Australian ships currently ply waters in northern Europe, the Mediterranean, South America and increasingly in Asia.

22.  Enforcement officers are considered a vital element of Marina as they are the ones who ensure that vessels plying Philippine waters are seaworthy.

23.  Formerly a fisherman, Ahmad now supplies fish cages to fisherman in his village, most of whom ply the waters near Pulau Ubin.

24.  Hundreds more were hoping to catch rides on ferries still plying the waters of the Tonle Sap River, which snakes its way around the city.

25.  Hundreds more were trying to catch rides on ferries still plying the waters of the Tonle Sap River, which snakes its way around the city.

26.  It will also apply to hovercrafts and small hydrofoils which ply the waters several times a day between Finland and Estonia.

27.  New generation aircraft such as the Lockheed Constellation turned the tide on the liners, which traditionally plied the waters between Australia and England.

28.  Nine anti-pollution boats plied waters surrounding Singapore on Thursday looking for oil patches to clean up, the Maritime and Port Authority Singapore said.

29.  Now only a handful of crafts ply the waters -- a few ferries, the odd fishing boat, speedboats.

30.  Slaloming through fishing fleets in the Straits of Malacca, he vividly described Arab and Chinese traders, Portuguese and British colonials who plied these waters in centuries past.