GRAND HAVEN, MI (WTAQ) - A group that searches for shipwrecks has found what it believes to be a 19th-century vessel that sank in Lake Michigan 138 years ago.

The Michigan Shipwreck Research Association said Friday that it located the boat in about 350 feet of water off the coast of Grand Haven Michigan. And they believe it to be the St. Peter, a 90-foot two-masted schooner.

It was delivering wheat from Chicago to Buffalo when it went down in 1874 about 35 miles east of the Milwaukee shore. All crew members on the boat survived.

The research group said it located the vessel during a dive last fall – but it was not mentioned publicly until Friday. The group plans to discuss its explorations during a program on April 21st in Holland Michigan.