Tests in 1830 demonstrated that feathering paddles improved speed by 25% in smooth water and over 50% in rough seas.

In reality, her lack of freeboard would appear to have precluded any operations whatsoever except those in calm weather and smooth water.

In this mostly dark cave, riders hit the final rapid and then hit smooth water.

Protest at injustice often ripples the smooth waters of a quiet life.

A series of destroyers had been built over the preceding years, designed for high smooth water speed, with indifferent results, especially poor performance in heavy seas and poor fuel economy.