Technology makes ships easier to run, but some expectations do not match reality.
Myth 1: "The autopilot runs the ship by itself."
Fact: The autopilot helps hold the set course. It does not see traffic, weather or danger. That is why an officer of the watch and a proper look-out are always required on the bridge.
Myth 2: "With radar and AIS, a look-out is not needed."
Fact: Radar and AIS are aids. Small craft can be hard to see on radar, and not everyone uses AIS, or uses it correctly. The collision regulations require a look-out by all available means.
Myth 3: "Ships can stop whenever they want."
Fact: Large ships have very long stopping distances. Even when going from full ahead to full astern, a ship can travel several nautical miles, depending on size and load. So decisions must be taken early.
Myth 4: "Big ships have hundreds of crew."
Fact: Except for passenger ships, many large merchant ships operate with a relatively small crew. The number depends on ship type and size; for bulk carriers and container ships a crew of around twenty is commonly mentioned.
Myth 5: "A modern ship cannot sink."
Fact: There is no unsinkable ship. Technology and rules reduce the risk but do not eliminate it. This is why life-saving equipment, drills and training matter.
Conclusion
Technology is added next to good seamanship, not in place of it. The more automation grows, the more valuable human attention and correct decisions become.
General information only; numbers vary with the ship and the circumstances.