Wake
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Wake , also tail water or stern sea , the turbulence of the water passing through a vessel is generated.
The wake is created by the impulse that the ship's hull, moving through the water, transfers to the water. In motorized ships, turbulence in the water caused by the propeller also contributes to the wake.
On sailing ships , a long visible furrow is created in the water, which remains almost completely flat and calm even when the sea is rough. That is why the wake used to be used for outgoing and incoming boats.
In naval warfare , the Kiel track is a significant problem, since even the smallest units (such as torpedoes or periscopes ) a clearly visible track can leave in the water. In sea rescue , high-frequency radar is used to clearly show such traces even at night. The radar signature of the keel track can significantly exceed that of the generating ship. That is why stealth ships use hull shapes that generate more horizontal vortices, as these disperse faster and produce fewer flanks and thus fewer radar reflections than vertical vortices.
Colloquially, the saying "to sail / drive in someone's wake" means: to follow someone / to imitate someone.
When wakeboarding , the wake of the pulling boat is used as a kicker for jumps. Special wakeboard boats are therefore constructed in such a way that the characteristics of the keel shaft can be controlled by ballast and drive settings.
