You can use song or a wind instrument to compel the winds to obey you. The bard who possesses this feat is highly favored aboard a sailing vessel; indeed, a bard who demonstrates the ability to control the wind to some degree is usually given an officer’s position aboard ship.
Prerequisites: Bardic music class feature, Perform (sing or wind instruments) 5 ranks.
Benefit: By expending a daily bardic music use, you can lull the winds around a single ship into well-tamed gusts. They continue to blow into the sails of the ship as normal for their speed, but their effects on the crew are one stage in intensity less {Sto 23}. Thus, a strong wind affected by this ability continues to propel the ship along as normal for a strong wind, but it only affects the crew as though it were a moderate wind.
You can also alter the direction of the wind by one compass point (from north to north-west or north-east, from south-west to west or south, etc.).
These effects last as long as the bard continues to perform his bardic music, plus 10 rounds after the music has ended.
Source: Stormwrack, page 94. Added the Bardic Music descriptor.