Mobile, AL – The Caribbean Mercy has docked in Mobile. The ship's international and inter-denominational crew brings medical attention to the world's poor. It's one of three hospital ships operated by Mercy Ships International. The crew is all volunteer and members donate their time. They usually perform eye surgeries on board the ship. Doctors say even such routine procedures as cataract removal are extremely critical in poor countries because cataracts are a major medical problem in those places. Crew members say it's common for hundreds of people to line up for medical care when one of the ships enters a foreign port.