Huntington Ingalls Industries (HII) has received an order from the US Navy for the supply of two REMUS 300 unmanned underwater vehicles (UUVs).

The two-man portable vehicle is manufactured by US-based underwater technology company Hydroid, a subsidiary of HII.

The REMUS 300 is a new, small class unmanned UUV built for military and commercial applications, such as mine countermeasures and search and recovery.

It has options for 1.5kWh, 3kWh, or 4.5kWh lithium-ion batteries to achieve endurance of up to ten, 20 or 30 hours and recharge time of six, 12 or 18 hours, respectively.

The company will deliver the vehicles in the middle of next year.

HII Technical Solutions division Unmanned Systems business group president Duane Fotheringham said: “REMUS UUVs have been used by the US Navy for their defence operations for more than 20 years.

“We are pleased to provide them with the new REMUS 300 to support their critical national security missions.”

According to HII, the open architecture and modularity of the UUV allows REMUS 300 to be customised to fulfil specific mission requirements.

The UUV is also designed to ‘enable spiral development and upgrades’ using evolving technology.

The REMUS 300 has been developed to provide additional modularity to enable the operator to integrate new software, as well as reconfigure payloads, sensors and energy modules.

The diameter of the REMUS 300 vehicle is 7.5in while the depth rating has increased to 305m when compared to the REMUS 100.

In February last year, Hydroid delivered the first REMUS 300 UUV prototype to the Naval Information Warfare Center (NIWC) through the Defense Innovation Unit (DIU), a US DoD organisation.