The Marine Casualty Investigation Board has confirmed it is investigating an incident involving two vessels off the Kerry coast.
It is believed a French-registered fishing trawler and a large cargo vessel collided not far from the Blasket Islands last Saturday.
The French-registered trawler sustained considerable damage to its bow and some of its crew received medical attention.
Environmental concerns have been raised following the incident.
Campaigners said a more serious collision could have a devastating impact on sensitive sea-life and marine ecosystems off the south and southwest coast.
The region is noted for its rich marine life, including humpback whales.
