KAAV-II prototype advances South Korea’s amphibious armour push

Hanwha Aerospace has unveiled the KAAV-II amphibious assault vehicle prototype, moving South Korea’s next-generation marine armour programme into a more visible stage as the country prepares to replace its older KAAV fleet.

The prototype was shown at Hanwha’s Changwon facility and is intended for the Republic of Korea Marine Corps. The vehicle is designed as a heavier, faster, and more survivable successor to the existing Korea Amphibious Assault Vehicle, which itself is derived from the US AAVP-7A1 family. Current planning points toward completion of system development in 2028, with serial production beginning in 2029 and full fielding extending into the following decade.

The design marks a clear shift in role. The existing KAAV is primarily an amphibious troop carrier with machine-gun and grenade-launcher armament. KAAV-II moves closer to a mechanised amphibious fighting vehicle, combining a high-speed planing hull with an unmanned turret armed with a 40mm cased telescoped ammunition cannon. The change gives South Korean Marines a vehicle intended to fight through contested littorals rather than simply carry troops from ship to shore.

That raises the manufacturing burden considerably. High-speed amphibious armour is a difficult engineering category because it has to behave as both a land combat vehicle and a waterborne craft. Hull geometry, buoyancy, weight distribution, sealing, cooling, suspension, powerpack output, corrosion resistance, and emergency escape arrangements all have to be developed together. Adding an unmanned turret, digital systems, heavier armour, and troop accommodation increases the integration challenge.

The industrial lessons are familiar. The cancelled US Expeditionary Fighting Vehicle showed how expensive and technically unforgiving high-speed amphibious vehicles can become when speed, protection, reliability, and payload all have to be maximised simultaneously. South Korea’s requirement appears more conservative than the most ambitious EFV targets, but the same trade-offs remain. More armour improves protection but increases displacement. More power improves water speed but increases cooling, fuel, and reliability demands.

The 40mm CTA turret is one of the more significant capability changes. A compact unmanned turret reduces intrusion into the troop compartment while allowing the vehicle to carry a heavier cannon than legacy KAAV armament. Programmable airburst, armour-piercing, and multipurpose ammunition would give the platform wider engagement options against light armour, fortified positions, infantry under cover, and low-altitude unmanned threats. That also brings a production demand for ammunition handling systems, fire-control electronics, stabilisation, electro-optical sights, and test infrastructure.

KAAV-II also sits within a broader Indo-Pacific return to littoral manoeuvre. IN Defence recently covered Australia proving HIMARS ship-to-shore deployment, another example of regional forces reworking land systems for maritime and archipelagic operations. South Korea’s vehicle programme is different in form but similar in logic: forces operating near coastlines need platforms that can move between ships, shorelines, islands, and inland routes while remaining connected to longer-range fires and sensors.

The Korean peninsula gives the programme a specific operational pressure. Any amphibious or coastal operation would face dense artillery, missiles, drones, mines, and anti-armour systems. A future marine vehicle has to reduce exposure time in the water, survive on landing, carry enough firepower to suppress threats, and support troops in complex terrain. That pushes the vehicle beyond the simpler landing-craft-to-beach model associated with older amphibious armour.

For Hanwha, KAAV-II extends a wider land-systems portfolio already built around artillery, armoured vehicles, engines, and exportable ground platforms. The company’s ability to move the prototype into reliable serial production will be watched closely by customers looking for alternatives to legacy amphibious vehicles. Many marine forces still operate ageing AAV-type platforms, but replacing them is costly because requirements are so specialised and fleet sizes are often limited.

The programme will also test South Korea’s domestic supply chain. A vehicle in this class requires high-output propulsion, marine transmission arrangements, waterborne drive systems, corrosion-resistant structures, ballistic protection, electronic architecture, fire-control systems, and production quality control able to support amphibious safety. Maritime safety has to be treated as a core engineering requirement, not a secondary operational matter.

KAAV-II is therefore best read as a production challenge rather than a prototype showcase. The platform brings together several difficult technologies in a single vehicle: high-speed water transit, tracked land mobility, armoured protection, unmanned turret lethality, and digital battlefield integration. If Hanwha can bring those elements into serial manufacture, South Korea will gain a domestic amphibious combat vehicle line at a time when contested littoral operations are moving back into defence planning across the region.