Judging by how a container ship has recently run aground on the Astrolabe reef off Tauranga, NZ, a reef everyone knows is there, and nowhere near the shipping lane, one wonders whether some ships need a specialist pilot all the time. This ship is now breaking up, and spewing oil and containers, some containing harmful substances into the bay...
How does this kind of thing happen when they have all the good gear mentioned above. Because maybe they rely on it too much, and maybe no-one was keeping adequate watch...?
http://www.businessweek.com/ap/finan.../D9QAET881.htm
http://www.theaustralian.com.au/news...-1226164487504