For four hours this weekend, dozens of young skateboarders will descend on the Redondo Beach pier to show off their best tricks.

But they won’t be worried about getting ticketed by police — it was all Chief Keith Kauffman’s idea.

The inaugural King of the Harbor Skateboarding Championships kicks off at 11 a.m. Saturday at an octagon-shaped cement area near the Fun Factory, where a vacant building was demolished several years ago.

Hosted by the Redondo Beach Police Department, the free event aims to promote safety and build positive relationships between law enforcement and youths participating in a sport that’s inherently outside the lines.

“Chief Kauffman wanted to do a community outreach program for local kids and, since skateboarding is a lot of fun and there aren’t a lot of places around here to do that, he thought it might be a good idea,” said Dinah Lary, community services program manager at the Redondo Beach Police Department. “You aren’t allowed to skateboard at the pier normally.”

Participants ages 8 to 18 must wear a helmet and complete a liability waiver.

The event is for skateboarders of all experience levels and will include free skate time before the contest gets underway.

Skateboarders will get two one-minute shots to impress on a course of rails, ramps and other pieces of equipment. A panel of judges — including pro skater and stuntman Jason Acuña, better known as “Wee Man” — will score contestants in three age groups. Winners will be named in each age division and one overall winner will be declared King of the Harbor Champion.

Instructors from BeachSports, a company that has put on skate camps at the spot, also will judge the contest.

The day will feature music, free T-shirts, food from Chronic Tacos and Kincaid’s, water and snacks from the Beach Cities Health District, and helmets and goodie bags from Kinecta Credit Union and Spyder Boards.

Participants can register online at redondo.org/police or in person on the day of the event.

“This is mostly a friendly competition, it’s not a real hardcore contest,” Lary said. “It’s for kids to come out and have a great time.”