Updated 07/31/11 – 10:43 a.m.

CHICAGO (STMW) — Fire department personnel rescued a woman who fell out of a boat Saturday near Belmont Harbor — the third rescue of the day.

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About 10 p.m., the fire department responded to a report of a woman in the water near the 3500 block of North Lake Shore Drive, Fire Media Affairs spokesman Joe Roccasalva said.

Crews learned the woman fell off a boat and could not get back in, Roccasalva said. Crews got her out of the water and took her to St. Joseph Hospital for observation.

About 7:45 p.m., a boat went down in Burnham Harbor, about 1400 South Lake Shore Drive, about a half-mile from shore, Roccaslava said. Twenty-two people were aboard the vessel when it sank, and other boats in the area picked up the passengers.

A man in his 20s suffered a head injury and paramedics took him to Mercy Hospital and Medical Center in “stable” condition, Roccasalva said. The rest of the passengers were examined on shore and released.

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It was not immediately known why the boat sank.

Just before 5 p.m., the police Marine Unit responded to the 800 block of North Lake Shore Drive, where divers pulled a male from Lake Michigan, police News Affairs Sgt. Antoinette Ursitti said.

The 30-year-old man was put on a fire department boat and taken to the 1600 block of North Lake Shore Drive, whre paramedics took him by ambulance to Northwestern Memorial Hospital in “very critical condition,” Fire Media Affairs spokesman Joe Roccasalva said.

The man apparently fell out of a boat, Roccasalva said.

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