A fleet of five whalers set sail for the Southern Ocean in November, as Tokyo pursues its "research whaling" in defiance of global criticism.
Three of the vessels, including the fleet's main ship, the Nisshin Maru, arrived in the morning at Shimonoseki port in western Japan, a port official said.
The fleet caught 333 minke whales as planned without any interruption by anti-whaling campaigners, the Fisheries Agency said in a statement.
Japanese whalers have in the past clashed at sea with animal rights campaigners, particularly the Sea Shepherd activist group, which last year announced it had no plan to make offshore protests this season.
Tokyo says the slaughter is necessary for in-depth knowledge of whale behaviour and biology, but it makes no secret of the fact that whales killed in the hunts often end up on dinner plates.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.