launch

The movement of a vessel from land into the water; especially, the sliding on ways from the stocks on which it is built. (Compare: to splash a ship.)

The act or fact of launching (a ship/vessel, a project, a new book, etc.).

An event held to celebrate the launch of a ship/vessel, project, a new book, etc.; a launch party.

"book launch"

To throw (a projectile such as a lance, dart or ball); to hurl; to propel with force.

To pierce with, or as with, a lance.

Similar: lance, pierce

To cause (a vessel) to move or slide from the land or a larger vessel into the water; to set afloat.

"The navy launched another ship."