A container barge ran aground off Sentosa island last month in a relatively rare incident. But the challenges faced by Singapore's coasts are constant and possibly mounting. SINGAPORE: He was sailing through a channel between Sentosa and Lazarus islands south of Singapore, when his vessel met with strong winds and currents. The captain soon noticed something was amiss with his ship’s position relative to a fixed navigation buoy, a sign that it was on the dangerous side of the channel. The 35m-