AFP: An oil slick from a crude tanker damaged in a collision off Singapore reached the city state’s eastern coast on Wednesday as emergency crews worked to stop the spill from spreading. Oil patches were sighted around a naval base, ferry terminal, sailing centre and resort near Changi Airport, and environmental crews battled to limit the impact of the disaster, the Maritime and Port Authority (MPA) said. A black film of oil could be seen floating in the waters off the Tanah Merah …