New Zealand's second P-8A Poseidon arrived home on March 20th. The New Zealand Ministry of Defence confirmed MK 54 Torpedoes are included in the P-8A Poseidon purchase.

For the US Navy's torpedo upgrade programs, Curtiss-Wright Corporation was selected to provide MOSA computers and digital processing modules.

The United States' State Department approved a possible Foreign Military Sale (FMS) to India of 10 AGM-84L Harpoon Block II anti-ship missiles and 19 MK 54 lightweight torpedoes for a total amount of $155 million. These weapons are intended for the Indian Navy's P-8I Neptune Maritime Patrol Aircraft (MPA)

The US State Department on August 27 green lighted a possible Foreign Military Sale to South Korea for Mk 54 lightweight torpedoes for an estimated cost of US$ 72 million.

Canada is requesting a US$387 million order for 425 Mk 54 lightweight torpedoes conversion kits through the US Foreign Military Sales program, the Defense Security Cooperation Agency stated on May 17, 2019.