whistle buoy वाक्य

उदाहरण वाक्य

1. A lighted whistle buoy off the entrance marks the approach.
2. A nearby whistling buoy is known as " Mother Ann s Cow ".
3. A lighted whistle buoy is north of the rock.
4. Bells were also used on buoys; later whistling buoys were invented by J . M . Courtenay and were first in use in 1876.