Tommy Kovaks

Tom Kovaks was a Human man. He served in Starfleet aboard the Federation starship USS Enterprise (NCC-1701) under Captain James T. Kirk in the 2260s, notably as a relief helmsman.

History
Tom Kovaks served in all three divisions while aboard the Enterprise.

In 2266, while serving a rotation in the sciences division, he was chased down a corridor by sword-wielding Hikaru Sulu, who was under the influence of polywater intoxication. Kovaks also served on the bridge when the Romulan bird of prey destroyed Outpost 4 along the Romulan Neutral Zone to incite a war. 

In 2267, during his rotation in the operations division, Kovaks manned the helm during the Federation-Klingon War of 2267 as the Enterprise confronted multiple Klingon battlecruisers. 

By 2270, he was serving in the command division, continuing as relief helmsman during periods when Sulu assumed command. During their encounter with the Hollow Planet, Kovaks adjusted the ship from an erratic orbit to a pursuit course when the artificial planet suddenly veered away from them. 

Later that year, he struggled to compensate against increasingly erratic waves of temporal disruption from the Guardian of Forever while in orbit of. With so many waves that Pavel Chekov was unable to plot them, Sulu took over from Kovaks so as to evade them by instinct. 

Background
Kovaks first name was provided in "The Hunger" and his last name in "An Unexpected Yesterday".