Tokyo and Washington are set to unveil Thursday a string of measures aimed at mitigating the impact of U.S. forces on Okinawa, including promoting the transfer of Marine Corps MV-22 Osprey training flights outside of Okinawa or abroad, sources close to bilateral ties said Monday.

The measures to be finalized at a meeting of Prime Minister Shinzo Abe's Cabinet also include allowing fishing boats to enter waters east of Okinawa's main island, designated as a training area for the U.S. military, which are effectively off-limits to such vessels at present.

The move is aimed at helping to pave the way for the construction of a replacement facility farther north on Okinawa Island for U.S. Marines Corps Air Station Futenma, given the need to obtain authorization from Okinawa Gov. Hirokazu Nakaima for a landfill in a coastal area designated for the future facility.