The HMAF is partially supported by defence co-operation agreements with Australia, the United States, China, India, and New Zealand.

[2] The main elements of HMAF are:[3][4] The Maritime Force is equipped with two Guardian-class patrol boats, provided by Australia under the Pacific Maritime Security Program, a tanker, a Landing Craft Mechanised and a motor boat, that is the royal yacht.

[5] Tongan Maritime Force performs patrol missions, occasionally dealing with border violations, at the Minerva Reef and Tonga's restricted fishing zones.

[6] The Tongan Royal Guards are a company size unit that are responsible for the security of His Majesty.

[7] The HMAF is a member of the following international defence organisations: Tonga has an agreement to share "disaster response knowledge" with the United States Nevada National Guard.