Because they were ignorant.
because of the moisture of the oil if you throw oil in a bottle of water you would realize that it is calm the same thing goes for the sea and boat
The expression is usually 'Fair winds and calm seas' and it means a sailing ship can make good progress without battling against the waves.
maria.
Maria
As in all seas, everything from rough to calm
The Doldrums
The seas were rough overnight and calm in the morning.
Yes.
by the oil
Mare Tranquillitatis or Sea of Tranquility is the lunar landform.
Sargasso sea