The Maryland Natural Resources Police and the Coast Guard remind boaters that a section of the Atlantic Ocean off Ocean City, Md., will be closed from 11 a.m. to 5 p.m. on May 13 for the Offshore Powerboat Races.

The closed area stretches between Third to 30th streets, extending one mile offshore. The area will be marked with buoys and patrolled by police boats. Designated race-support boats will be allowed in the security zone to assist the competitors.

For the safety of racers and spectators, all other boats and vessels are prohibited from entering the restricted area or interfering with the race.

Boaters should expect delays and congestion at the West Ocean City Public Ramp during practice day on May 12, and on May 13, as raceboats are loaded and unloaded. The boats will leave the ramp and continue through the Ocean Inlet to the race area.