The US Defense Security Cooperation Agency (DSCA) has notified Congress of a possible foreign military sale (FMS) of up to five RGM-84L Harpoon Block II surface launched missiles to Thailand.

The FMS has been approved by the US State Department and is worth an estimated $24.9m.

Thailand has also submitted a request for the potential sale of one RTM-84L Harpoon Block II exercise missile, including containers, spare and repair parts, support and test equipment, publications and technical documentation, in addition to personnel training and training equipment.

The deal will also ensure the supply of technical assistance, engineering and logistics support services, and other related elements of logistics and programme support from the US Government and contractor representatives.

The Harpoon Block II missiles are being procured for use on the Royal Thai Navy’s (RTN) DW3000-class frigate.

"The possible sale is expected to offer enhanced capabilities for the effective defence of critical sea lines, while improving the RTN’s maritime partnership potential."

Additionally, the possible sale is expected to offer enhanced capabilities for the effective defence of critical sea lines, while improving the RTN’s maritime partnership potential.

Boeing Company has been cited as the potential principal contractor for the sale. The company is situated in St. Louis, Missouri, US.

The RTN previously awarded a contract to South Korean shipbuilder DSME in August 2013 for the construction of a DW3000-class frigate known as HTMS Tha Chin.

The frigate was launched in January this year and is expected to be delivered in 2018.

Harpoon Block II missiles are all-weather, over-the-horizon missile systems capable of executing both land-strike and anti-ship missions.