Missing are Bogdan Makowski, 69, and Elizabeth Makowski, 61, of Hudson, Florida.
A friend of the Makowski's contacted Coast Guard Station Sand Key, Florida, at 9:51 a.m., because she had not heard from the couple since Aug. 24 and had expected them back Aug. 26.
The couple were last known to be sailing with a disabled engine in the vicinity of the Sunshine Skyway Bridge, St. Petersburg, heading to Skeletion Key Marina in Hudson, Florida on Aug. 24.
A C-130 Hercules aircraft rescue crew from Coast Guard Air Station Clearwater, Florida, is searching for the couple.
If you or someone you know has any information regarding the wherabouts of Bogdan Makowski and Elizabeth Makowski, please contact Coast Guard Sector St. Petersburg watchstanders at 727-824-7506.
For breaking news, follow us on Twitter @uscgsoutheast.