Ramsgate RNLI was called to a report of people being washed off of the East Pier this morning (April 30).
The crew were called out after receiving the report from fishing vessel Columbus.
Crews on London Array windfarm boats helped the inshore crew to bring two people to safety. A third was injured.
An RNLI spokesman said a helicopter landed at the crosswalk to attend to the person. It is believed they had a head injury.
Ramsgate RNLI has also launched to reports of kite surfers in trouble at Joss Bay.
A HM Coastguard spokesman said: “Just before 10.30am today (Monday 30 April) HM Coastguard received a report that three people were in distress in the water off Ramsgate pier. It is believed that all three people were washed off the pier by a large wave.
“Margate Coastguard Rescue Team and the Ramsgate RNLI Lifeboats are on scene, alongside South East Ambulance Service and Kent Police.
“All three people have been recovered from the water and are in the care of the Ambulance Service.”
A Kent Police spokesman said: “Kent Police was called at 11.29am to a report of three people in the water by the Royal Harbour in Ramsgate.
“Officers are attending to assist the Coastguard and the lifeboat teams. The South East Coast Ambulance Service is also in attendance. ”
South East Coast Ambulance Service confirmed paramedics at the scene, adding: “We have attended a serious incident at Ramsgate Harbour. The air ambulance service has joined us at the scene.”
A spokesman for Kent air ambulance added: “At 11.42am today, Kent, Surrey & Sussex Air Ambulance was called to an accidental injury in Ramsgate. Both helicopters attended.”