Question

Why should a vessel operator keep a proper lookout?.

Answer 1

make a full appraisal of the situation and of the risk of collision.

Step-by-step explanation:

at all times maintain a proper lookout by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.”

Answer 2

Step-by-step explanation:

If the vessel operator doesn't, he could put many people's life at risk. A famous example would be the Titanic, where the people in the crow's nest where malequipped with binoculars so could not see the iceberg ahead. In doing so, they put 2200 souls in Jeopardy, of which, 1500 died.