Complex sentence: In April 1945 she was converted to a hospital ship and an attempt made to paint the vessel white, but there was only sufficient paint available to paint her funnels white and paint a Red Cross on one side of one of her funnels.
Split into simpler sentences: In April 1945 she was converted to a hospital ship, and an attempt made to paint the vessel white. However, there was only sufficient paint available to paint her funnels white, and paint a Red Cross on one side of one of her funnels.