Twentieth Television has sold hourlong series “Pt. Dume” to Tribune stations around the country.

Set to premiere weekly in fall 2011, action-adventure skein is from Gregory Bonann, creator and exec producer of syndie champ “Baywatch.” Show will focus on troubled high school kids who must work with a lifeguard, firefighter and Coast Guard pilot as a form of detention.

Show has cleared 30% of the country, including WPIX in New York, KTLA in Los Angeles and WGN in Chicago.

Long past since “Baywatch” ruled the day, original offnet hourlies are rare these days. Most recently, Disney offered “Legend of the Seeker,” which ran for two seasons across a handful of stations and ended in March.

Said Sean Compton, president of programming for Tribune Broadcasting: “Now that our CW stations are five nights of original programming, we are looking to add a sixth night and ‘Pt. Dume’ is the perfect complement to our existing prime lineup.”

Engine Entertainment will handle international distribution.