The boat arrived at Munambam by noon and the fishermen,
who sustained minor injuries, were hospitalised, police said.
The fishermen claimed that they had waved and sounded the horn of the boat when they saw the ship approaching, but the vessel hit the boat and left without stopping.
Under the impact of the collision, two fishermen fell into the water and were rescued after more than half an hour, they said.
The fishermen had put out to sea from Munambam yesterday.